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drivers: Remove explicit invocations of mmiowb()

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mmiowb() is now implied by spin_unlock() on architectures that require
it, so there is no reason to call it from driver code. This patch was
generated using coccinelle:

	@mmiowb@
	@@
	- mmiowb();

and invoked as:

$ for d in drivers include/linux/qed sound; do \
spatch --include-headers --sp-file mmiowb.cocci --dir $d --in-place; done

NOTE: mmiowb() has only ever guaranteed ordering in conjunction with
spin_unlock(). However, pairing each mmiowb() removal in this patch with
the corresponding call to spin_unlock() is not at all trivial, so there
is a small chance that this change may regress any drivers incorrectly
relying on mmiowb() to order MMIO writes between CPUs using lock-free
synchronisation. If you've ended up bisecting to this commit, you can
reintroduce the mmiowb() calls using wmb() instead, which should restore
the old behaviour on all architectures other than some esoteric ia64
systems.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Will Deacon 2019-02-22 17:14:59 +00:00
parent 949b8c7276
commit fb24ea52f7
123 changed files with 1 additions and 508 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/crypto/cavium/nitrox/nitrox_reqmgr.c
View File

@ -303,8 +303,6 @@ static void post_se_instr(struct nitrox_softreq *sr,
/* Ring doorbell with count 1 */
writeq(1, cmdq->dbell_csr_addr);
/* orders the doorbell rings */
mmiowb();
cmdq->write_idx = incr_index(idx, 1, ndev->qlen);
@ -599,8 +597,6 @@ void pkt_slc_resp_tasklet(unsigned long data)
* MSI-X interrupt generates if Completion count > Threshold
*/
writeq(slc_cnts.value, cmdq->compl_cnt_csr_addr);
/* order the writes */
mmiowb();
if (atomic_read(&cmdq->backlog_count))
schedule_work(&cmdq->backlog_qflush);

3
drivers/dma/txx9dmac.c
View File

@ -327,7 +327,6 @@ static void txx9dmac_reset_chan(struct txx9dmac_chan *dc)
channel_writel(dc, SAIR, 0);
channel_writel(dc, DAIR, 0);
channel_writel(dc, CCR, 0);
mmiowb();
}
/* Called with dc->lock held and bh disabled */
@ -954,7 +953,6 @@ static void txx9dmac_chain_dynamic(struct txx9dmac_chan *dc,
dma_sync_single_for_device(chan2parent(&dc->chan),
prev->txd.phys, ddev->descsize,
DMA_TO_DEVICE);
mmiowb();
if (!(channel_readl(dc, CSR) & TXX9_DMA_CSR_CHNEN) &&
channel_read_CHAR(dc) == prev->txd.phys)
/* Restart chain DMA */
@ -1080,7 +1078,6 @@ static void txx9dmac_free_chan_resources(struct dma_chan *chan)
static void txx9dmac_off(struct txx9dmac_dev *ddev)
{
dma_writel(ddev, MCR, 0);
mmiowb();
}
static int __init txx9dmac_chan_probe(struct platform_device *pdev)

1
drivers/firewire/ohci.c
View File

@ -2939,7 +2939,6 @@ static void set_multichannel_mask(struct fw_ohci *ohci, u64 channels)
reg_write(ohci, OHCI1394_IRMultiChanMaskLoClear, ~lo);
reg_write(ohci, OHCI1394_IRMultiChanMaskHiSet, hi);
reg_write(ohci, OHCI1394_IRMultiChanMaskLoSet, lo);
mmiowb();
ohci->mc_channels = channels;
}

10
drivers/gpu/drm/i915/intel_hdmi.c
View File

@ -182,7 +182,6 @@ static void g4x_write_infoframe(struct intel_encoder *encoder,
I915_WRITE(VIDEO_DIP_CTL, val);
mmiowb();
for (i = 0; i < len; i += 4) {
I915_WRITE(VIDEO_DIP_DATA, *data);
data++;
@ -190,7 +189,6 @@ static void g4x_write_infoframe(struct intel_encoder *encoder,
/* Write every possible data byte to force correct ECC calculation. */
for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
I915_WRITE(VIDEO_DIP_DATA, 0);
mmiowb();
val |= g4x_infoframe_enable(type);
val &= ~VIDEO_DIP_FREQ_MASK;
@ -237,7 +235,6 @@ static void ibx_write_infoframe(struct intel_encoder *encoder,
I915_WRITE(reg, val);
mmiowb();
for (i = 0; i < len; i += 4) {
I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
data++;
@ -245,7 +242,6 @@ static void ibx_write_infoframe(struct intel_encoder *encoder,
/* Write every possible data byte to force correct ECC calculation. */
for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
mmiowb();
val |= g4x_infoframe_enable(type);
val &= ~VIDEO_DIP_FREQ_MASK;
@ -298,7 +294,6 @@ static void cpt_write_infoframe(struct intel_encoder *encoder,
I915_WRITE(reg, val);
mmiowb();
for (i = 0; i < len; i += 4) {
I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
data++;
@ -306,7 +301,6 @@ static void cpt_write_infoframe(struct intel_encoder *encoder,
/* Write every possible data byte to force correct ECC calculation. */
for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
I915_WRITE(TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
mmiowb();
val |= g4x_infoframe_enable(type);
val &= ~VIDEO_DIP_FREQ_MASK;
@ -352,7 +346,6 @@ static void vlv_write_infoframe(struct intel_encoder *encoder,
I915_WRITE(reg, val);
mmiowb();
for (i = 0; i < len; i += 4) {
I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), *data);
data++;
@ -360,7 +353,6 @@ static void vlv_write_infoframe(struct intel_encoder *encoder,
/* Write every possible data byte to force correct ECC calculation. */
for (; i < VIDEO_DIP_DATA_SIZE; i += 4)
I915_WRITE(VLV_TVIDEO_DIP_DATA(intel_crtc->pipe), 0);
mmiowb();
val |= g4x_infoframe_enable(type);
val &= ~VIDEO_DIP_FREQ_MASK;
@ -406,7 +398,6 @@ static void hsw_write_infoframe(struct intel_encoder *encoder,
val &= ~hsw_infoframe_enable(type);
I915_WRITE(ctl_reg, val);
mmiowb();
for (i = 0; i < len; i += 4) {
I915_WRITE(hsw_dip_data_reg(dev_priv, cpu_transcoder,
type, i >> 2), *data);
@ -416,7 +407,6 @@ static void hsw_write_infoframe(struct intel_encoder *encoder,
for (; i < data_size; i += 4)
I915_WRITE(hsw_dip_data_reg(dev_priv, cpu_transcoder,
type, i >> 2), 0);
mmiowb();
val |= hsw_infoframe_enable(type);
I915_WRITE(ctl_reg, val);

2
drivers/ide/tx4939ide.c
View File

@ -156,7 +156,6 @@ static u16 tx4939ide_check_error_ints(ide_hwif_t *hwif)
u16 sysctl = tx4939ide_readw(base, TX4939IDE_Sys_Ctl);
tx4939ide_writew(sysctl | 0x4000, base, TX4939IDE_Sys_Ctl);
mmiowb();
/* wait 12GBUSCLK (typ. 60ns @ GBUS200MHz, max 270ns) */
ndelay(270);
tx4939ide_writew(sysctl, base, TX4939IDE_Sys_Ctl);
@ -396,7 +395,6 @@ static void tx4939ide_init_hwif(ide_hwif_t *hwif)
/* Soft Reset */
tx4939ide_writew(0x8000, base, TX4939IDE_Sys_Ctl);
mmiowb();
/* at least 20 GBUSCLK (typ. 100ns @ GBUS200MHz, max 450ns) */
ndelay(450);
tx4939ide_writew(0x0000, base, TX4939IDE_Sys_Ctl);

3
drivers/infiniband/hw/hfi1/chip.c
View File

@ -8365,7 +8365,6 @@ static inline void clear_recv_intr(struct hfi1_ctxtdata *rcd)
struct hfi1_devdata *dd = rcd->dd;
u32 addr = CCE_INT_CLEAR + (8 * rcd->ireg);
mmiowb();
write_csr(dd, addr, rcd->imask);
/* force the above write on the chip and get a value back */
(void)read_csr(dd, addr);
@ -11803,12 +11802,10 @@ void update_usrhead(struct hfi1_ctxtdata *rcd, u32 hd, u32 updegr, u32 egrhd,
<< RCV_EGR_INDEX_HEAD_HEAD_SHIFT;
write_uctxt_csr(dd, ctxt, RCV_EGR_INDEX_HEAD, reg);
}
mmiowb();
reg = ((u64)rcv_intr_count << RCV_HDR_HEAD_COUNTER_SHIFT) |
(((u64)hd & RCV_HDR_HEAD_HEAD_MASK)
<< RCV_HDR_HEAD_HEAD_SHIFT);
write_uctxt_csr(dd, ctxt, RCV_HDR_HEAD, reg);
mmiowb();
}
u32 hdrqempty(struct hfi1_ctxtdata *rcd)

1
drivers/infiniband/hw/hfi1/pio.c
View File

@ -1578,7 +1578,6 @@ void hfi1_sc_wantpiobuf_intr(struct send_context *sc, u32 needint)
sc_del_credit_return_intr(sc);
trace_hfi1_wantpiointr(sc, needint, sc->credit_ctrl);
if (needint) {
mmiowb();
sc_return_credits(sc);
}
}

2
drivers/infiniband/hw/hns/hns_roce_hw_v1.c
View File

@ -1750,8 +1750,6 @@ static int hns_roce_v1_post_mbox(struct hns_roce_dev *hr_dev, u64 in_param,
writel(val, hcr + 5);
mmiowb();
return 0;
}

6
drivers/infiniband/hw/mlx4/qp.c
View File

@ -3744,12 +3744,6 @@ out:
writel_relaxed(qp->doorbell_qpn,
to_mdev(ibqp->device)->uar_map + MLX4_SEND_DOORBELL);
/*
* Make sure doorbells don't leak out of SQ spinlock
* and reach the HCA out of order.
*/
mmiowb();
stamp_send_wqe(qp, ind + qp->sq_spare_wqes - 1);
qp->sq_next_wqe = ind;

1
drivers/infiniband/hw/mlx5/qp.c
View File

@ -5123,7 +5123,6 @@ out:
/* Make sure doorbells don't leak out of SQ spinlock
* and reach the HCA out of order.
*/
mmiowb();
bf->offset ^= bf->buf_size;
}

6
drivers/infiniband/hw/mthca/mthca_cmd.c
View File

@ -292,12 +292,6 @@ static int mthca_cmd_post(struct mthca_dev *dev,
err = mthca_cmd_post_hcr(dev, in_param, out_param, in_modifier,
op_modifier, op, token, event);
/*
* Make sure that our HCR writes don't get mixed in with
* writes from another CPU starting a FW command.
*/
mmiowb();
mutex_unlock(&dev->cmd.hcr_mutex);
return err;
}

5
drivers/infiniband/hw/mthca/mthca_cq.c
View File

@ -211,11 +211,6 @@ static inline void update_cons_index(struct mthca_dev *dev, struct mthca_cq *cq,
mthca_write64(MTHCA_TAVOR_CQ_DB_INC_CI | cq->cqn, incr - 1,
dev->kar + MTHCA_CQ_DOORBELL,
MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
/*
* Make sure doorbells don't leak out of CQ spinlock
* and reach the HCA out of order:
*/
mmiowb();
}
}

17
drivers/infiniband/hw/mthca/mthca_qp.c
View File

@ -1809,11 +1809,6 @@ out:
(qp->qpn << 8) | size0,
dev->kar + MTHCA_SEND_DOORBELL,
MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
/*
* Make sure doorbells don't leak out of SQ spinlock
* and reach the HCA out of order:
*/
mmiowb();
}
qp->sq.next_ind = ind;
@ -1924,12 +1919,6 @@ out:
qp->rq.next_ind = ind;
qp->rq.head += nreq;
/*
* Make sure doorbells don't leak out of RQ spinlock and reach
* the HCA out of order:
*/
mmiowb();
spin_unlock_irqrestore(&qp->rq.lock, flags);
return err;
}
@ -2164,12 +2153,6 @@ out:
MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
}
/*
* Make sure doorbells don't leak out of SQ spinlock and reach
* the HCA out of order:
*/
mmiowb();
spin_unlock_irqrestore(&qp->sq.lock, flags);
return err;
}

6
drivers/infiniband/hw/mthca/mthca_srq.c
View File

@ -570,12 +570,6 @@ int mthca_tavor_post_srq_recv(struct ib_srq *ibsrq, const struct ib_recv_wr *wr,
MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
}
/*
* Make sure doorbells don't leak out of SRQ spinlock and
* reach the HCA out of order:
*/
mmiowb();
spin_unlock_irqrestore(&srq->lock, flags);
return err;
}

12
drivers/infiniband/hw/qedr/verbs.c
View File

@ -773,9 +773,6 @@ static void doorbell_cq(struct qedr_cq *cq, u32 cons, u8 flags)
cq->db.data.agg_flags = flags;
cq->db.data.value = cpu_to_le32(cons);
writeq(cq->db.raw, cq->db_addr);
/* Make sure write would stick */
mmiowb();
}
int qedr_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)
@ -2084,8 +2081,6 @@ static int qedr_update_qp_state(struct qedr_dev *dev,
if (rdma_protocol_roce(&dev->ibdev, 1)) {
writel(qp->rq.db_data.raw, qp->rq.db);
/* Make sure write takes effect */
mmiowb();
}
break;
case QED_ROCE_QP_STATE_ERR:
@ -3502,9 +3497,6 @@ int qedr_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
smp_wmb();
writel(qp->sq.db_data.raw, qp->sq.db);
/* Make sure write sticks */
mmiowb();
spin_unlock_irqrestore(&qp->q_lock, flags);
return rc;
@ -3695,12 +3687,8 @@ int qedr_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
writel(qp->rq.db_data.raw, qp->rq.db);
/* Make sure write sticks */
mmiowb();
if (rdma_protocol_iwarp(&dev->ibdev, 1)) {
writel(qp->rq.iwarp_db2_data.raw, qp->rq.iwarp_db2);
mmiowb();
}
wr = wr->next;

4
drivers/infiniband/hw/qib/qib_iba6120.c
View File

@ -1884,7 +1884,6 @@ static void qib_6120_put_tid(struct qib_devdata *dd, u64 __iomem *tidptr,
qib_write_kreg(dd, kr_scratch, 0xfeeddeaf);
writel(pa, tidp32);
qib_write_kreg(dd, kr_scratch, 0xdeadbeef);
mmiowb();
spin_unlock_irqrestore(tidlockp, flags);
}
@ -1928,7 +1927,6 @@ static void qib_6120_put_tid_2(struct qib_devdata *dd, u64 __iomem *tidptr,
pa |= 2 << 29;
}
writel(pa, tidp32);
mmiowb();
}
@ -2053,9 +2051,7 @@ static void qib_update_6120_usrhead(struct qib_ctxtdata *rcd, u64 hd,
{
if (updegr)
qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt);
mmiowb();
qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
mmiowb();
}
static u32 qib_6120_hdrqempty(struct qib_ctxtdata *rcd)

3
drivers/infiniband/hw/qib/qib_iba7220.c
View File

@ -2175,7 +2175,6 @@ static void qib_7220_put_tid(struct qib_devdata *dd, u64 __iomem *tidptr,
pa = chippa;
}
writeq(pa, tidptr);
mmiowb();
}
/**
@ -2704,9 +2703,7 @@ static void qib_update_7220_usrhead(struct qib_ctxtdata *rcd, u64 hd,
{
if (updegr)
qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt);
mmiowb();
qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
mmiowb();
}
static u32 qib_7220_hdrqempty(struct qib_ctxtdata *rcd)

3
drivers/infiniband/hw/qib/qib_iba7322.c
View File

@ -3793,7 +3793,6 @@ static void qib_7322_put_tid(struct qib_devdata *dd, u64 __iomem *tidptr,
pa = chippa;
}
writeq(pa, tidptr);
mmiowb();
}
/**
@ -4440,10 +4439,8 @@ static void qib_update_7322_usrhead(struct qib_ctxtdata *rcd, u64 hd,
adjust_rcv_timeout(rcd, npkts);
if (updegr)
qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt);
mmiowb();
qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
mmiowb();
}
static u32 qib_7322_hdrqempty(struct qib_ctxtdata *rcd)

4
drivers/infiniband/hw/qib/qib_sd7220.c
View File

@ -1068,7 +1068,6 @@ static int qib_sd_setvals(struct qib_devdata *dd)
for (idx = 0; idx < NUM_DDS_REGS; ++idx) {
data = ((dds_reg_map & 0xF) << 4) | TX_FAST_ELT;
writeq(data, iaddr + idx);
mmiowb();
qib_read_kreg32(dd, kr_scratch);
dds_reg_map >>= 4;
for (midx = 0; midx < DDS_ROWS; ++midx) {
@ -1076,7 +1075,6 @@ static int qib_sd_setvals(struct qib_devdata *dd)
data = dds_init_vals[midx].reg_vals[idx];
writeq(data, daddr);
mmiowb();
qib_read_kreg32(dd, kr_scratch);
} /* End inner for (vals for this reg, each row) */
} /* end outer for (regs to be stored) */
@ -1098,13 +1096,11 @@ static int qib_sd_setvals(struct qib_devdata *dd)
didx = idx + min_idx;
/* Store the next RXEQ register address */
writeq(rxeq_init_vals[idx].rdesc, iaddr + didx);
mmiowb();
qib_read_kreg32(dd, kr_scratch);
/* Iterate through RXEQ values */
for (vidx = 0; vidx < 4; vidx++) {
data = rxeq_init_vals[idx].rdata[vidx];
writeq(data, taddr + (vidx << 6) + idx);
mmiowb();
qib_read_kreg32(dd, kr_scratch);
}
} /* end outer for (Reg-writes for RXEQ) */

8
drivers/media/pci/dt3155/dt3155.c
View File

@ -46,7 +46,6 @@ static int read_i2c_reg(void __iomem *addr, u8 index, u8 *data)
u32 tmp = index;
iowrite32((tmp << 17) | IIC_READ, addr + IIC_CSR2);
mmiowb();
udelay(45); /* wait at least 43 usec for NEW_CYCLE to clear */
if (ioread32(addr + IIC_CSR2) & NEW_CYCLE)
return -EIO; /* error: NEW_CYCLE not cleared */
@ -77,7 +76,6 @@ static int write_i2c_reg(void __iomem *addr, u8 index, u8 data)
u32 tmp = index;
iowrite32((tmp << 17) | IIC_WRITE | data, addr + IIC_CSR2);
mmiowb();
udelay(65); /* wait at least 63 usec for NEW_CYCLE to clear */
if (ioread32(addr + IIC_CSR2) & NEW_CYCLE)
return -EIO; /* error: NEW_CYCLE not cleared */
@ -104,7 +102,6 @@ static void write_i2c_reg_nowait(void __iomem *addr, u8 index, u8 data)
u32 tmp = index;
iowrite32((tmp << 17) | IIC_WRITE | data, addr + IIC_CSR2);
mmiowb();
}
/**
@ -264,7 +261,6 @@ static irqreturn_t dt3155_irq_handler_even(int irq, void *dev_id)
FLD_DN_ODD | FLD_DN_EVEN |
CAP_CONT_EVEN | CAP_CONT_ODD,
ipd->regs + CSR1);
mmiowb();
}
spin_lock(&ipd->lock);
@ -282,7 +278,6 @@ static irqreturn_t dt3155_irq_handler_even(int irq, void *dev_id)
iowrite32(dma_addr + ipd->width, ipd->regs + ODD_DMA_START);
iowrite32(ipd->width, ipd->regs + EVEN_DMA_STRIDE);
iowrite32(ipd->width, ipd->regs + ODD_DMA_STRIDE);
mmiowb();
}
/* enable interrupts, clear all irq flags */
@ -437,12 +432,10 @@ static int dt3155_init_board(struct dt3155_priv *pd)
/* resetting the adapter */
iowrite32(ADDR_ERR_ODD | ADDR_ERR_EVEN | FLD_CRPT_ODD | FLD_CRPT_EVEN |
FLD_DN_ODD | FLD_DN_EVEN, pd->regs + CSR1);
mmiowb();
msleep(20);
/* initializing adapter registers */
iowrite32(FIFO_EN | SRST, pd->regs + CSR1);
mmiowb();
iowrite32(0xEEEEEE01, pd->regs + EVEN_PIXEL_FMT);
iowrite32(0xEEEEEE01, pd->regs + ODD_PIXEL_FMT);
iowrite32(0x00000020, pd->regs + FIFO_TRIGER);
@ -454,7 +447,6 @@ static int dt3155_init_board(struct dt3155_priv *pd)
iowrite32(0, pd->regs + MASK_LENGTH);
iowrite32(0x0005007C, pd->regs + FIFO_FLAG_CNT);
iowrite32(0x01010101, pd->regs + IIC_CLK_DUR);
mmiowb();
/* verifying that we have a DT3155 board (not just a SAA7116 chip) */
read_i2c_reg(pd->regs, DT_ID, &tmp);

4
drivers/memstick/host/jmb38x_ms.c
View File

@ -644,7 +644,6 @@ static int jmb38x_ms_reset(struct jmb38x_ms_host *host)
writel(HOST_CONTROL_RESET_REQ | HOST_CONTROL_CLOCK_EN
| readl(host->addr + HOST_CONTROL),
host->addr + HOST_CONTROL);
mmiowb();
for (cnt = 0; cnt < 20; ++cnt) {
if (!(HOST_CONTROL_RESET_REQ
@ -659,7 +658,6 @@ reset_next:
writel(HOST_CONTROL_RESET | HOST_CONTROL_CLOCK_EN
| readl(host->addr + HOST_CONTROL),
host->addr + HOST_CONTROL);
mmiowb();
for (cnt = 0; cnt < 20; ++cnt) {
if (!(HOST_CONTROL_RESET
@ -672,7 +670,6 @@ reset_next:
return -EIO;
reset_ok:
mmiowb();
writel(INT_STATUS_ALL, host->addr + INT_SIGNAL_ENABLE);
writel(INT_STATUS_ALL, host->addr + INT_STATUS_ENABLE);
return 0;
@ -1009,7 +1006,6 @@ static void jmb38x_ms_remove(struct pci_dev *dev)
tasklet_kill(&host->notify);
writel(0, host->addr + INT_SIGNAL_ENABLE);
writel(0, host->addr + INT_STATUS_ENABLE);
mmiowb();
dev_dbg(&jm->pdev->dev, "interrupts off\n");
spin_lock_irqsave(&host->lock, flags);
if (host->req) {

2
drivers/misc/ioc4.c
View File

@ -156,7 +156,6 @@ ioc4_clock_calibrate(struct ioc4_driver_data *idd)
/* Reset to power-on state */
writel(0, &idd->idd_misc_regs->int_out.raw);
mmiowb();
/* Set up square wave */
int_out.raw = 0;
@ -164,7 +163,6 @@ ioc4_clock_calibrate(struct ioc4_driver_data *idd)
int_out.fields.mode = IOC4_INT_OUT_MODE_TOGGLE;
int_out.fields.diag = 0;
writel(int_out.raw, &idd->idd_misc_regs->int_out.raw);
mmiowb();
/* Check square wave period averaged over some number of cycles */
start = ktime_get_ns();

3
drivers/misc/mei/hw-me.c
View File

@ -350,9 +350,6 @@ static void mei_me_hw_reset_release(struct mei_device *dev)
hcsr |= H_IG;
hcsr &= ~H_RST;
mei_hcsr_set(dev, hcsr);
/* complete this write before we set host ready on another CPU */
mmiowb();
}
/**

1
drivers/misc/tifm_7xx1.c
View File

@ -403,7 +403,6 @@ static void tifm_7xx1_remove(struct pci_dev *dev)
fm->eject = tifm_7xx1_dummy_eject;
fm->has_ms_pif = tifm_7xx1_dummy_has_ms_pif;
writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
mmiowb();
free_irq(dev->irq, fm);
tifm_remove_adapter(fm);

1
drivers/mmc/host/alcor.c
View File

@ -967,7 +967,6 @@ static void alcor_timeout_timer(struct work_struct *work)
alcor_request_complete(host, 0);
}
mmiowb();
mutex_unlock(&host->cmd_mutex);
}

13
drivers/mmc/host/sdhci.c
View File

@ -1807,7 +1807,6 @@ void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
sdhci_send_command(host, mrq->cmd);
}
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
EXPORT_SYMBOL_GPL(sdhci_request);
@ -2010,8 +2009,6 @@ void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
*/
if (host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS)
sdhci_do_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
mmiowb();
}
EXPORT_SYMBOL_GPL(sdhci_set_ios);
@ -2105,7 +2102,6 @@ static void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable)
sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
mmiowb();
}
}
@ -2353,7 +2349,6 @@ void sdhci_send_tuning(struct sdhci_host *host, u32 opcode)
host->tuning_done = 0;
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
/* Wait for Buffer Read Ready interrupt */
@ -2705,7 +2700,6 @@ static bool sdhci_request_done(struct sdhci_host *host)
host->mrqs_done[i] = NULL;
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
mmc_request_done(host->mmc, mrq);
@ -2739,7 +2733,6 @@ static void sdhci_timeout_timer(struct timer_list *t)
sdhci_finish_mrq(host, host->cmd->mrq);
}
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
@ -2770,7 +2763,6 @@ static void sdhci_timeout_data_timer(struct timer_list *t)
}
}
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
@ -3251,7 +3243,6 @@ int sdhci_resume_host(struct sdhci_host *host)
mmc->ops->set_ios(mmc, &mmc->ios);
} else {
sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER));
mmiowb();
}
if (host->irq_wake_enabled) {
@ -3391,7 +3382,6 @@ void sdhci_cqe_enable(struct mmc_host *mmc)
mmc_hostname(mmc), host->ier,
sdhci_readl(host, SDHCI_INT_STATUS));
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
EXPORT_SYMBOL_GPL(sdhci_cqe_enable);
@ -3416,7 +3406,6 @@ void sdhci_cqe_disable(struct mmc_host *mmc, bool recovery)
mmc_hostname(mmc), host->ier,
sdhci_readl(host, SDHCI_INT_STATUS));
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
EXPORT_SYMBOL_GPL(sdhci_cqe_disable);
@ -4255,8 +4244,6 @@ int __sdhci_add_host(struct sdhci_host *host)
goto unirq;
}
mmiowb();
ret = mmc_add_host(mmc);
if (ret)
goto unled;

3
drivers/mmc/host/tifm_sd.c
View File

@ -889,7 +889,6 @@ static int tifm_sd_initialize_host(struct tifm_sd *host)
struct tifm_dev *sock = host->dev;
writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE);
mmiowb();
host->clk_div = 61;
host->clk_freq = 20000000;
writel(TIFM_MMCSD_RESET, sock->addr + SOCK_MMCSD_SYSTEM_CONTROL);
@ -940,7 +939,6 @@ static int tifm_sd_initialize_host(struct tifm_sd *host)
writel(TIFM_MMCSD_CERR | TIFM_MMCSD_BRS | TIFM_MMCSD_EOC
| TIFM_MMCSD_ERRMASK,
sock->addr + SOCK_MMCSD_INT_ENABLE);
mmiowb();
return 0;
}
@ -1005,7 +1003,6 @@ static void tifm_sd_remove(struct tifm_dev *sock)
spin_lock_irqsave(&sock->lock, flags);
host->eject = 1;
writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE);
mmiowb();
spin_unlock_irqrestore(&sock->lock, flags);
tasklet_kill(&host->finish_tasklet);

10
drivers/mmc/host/via-sdmmc.c
View File

@ -686,7 +686,6 @@ static void via_sdc_request(struct mmc_host *mmc, struct mmc_request *mrq)
via_sdc_send_command(host, mrq->cmd);
}
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
@ -711,7 +710,6 @@ static void via_sdc_set_power(struct via_crdr_mmc_host *host,
gatt &= ~VIA_CRDR_PCICLKGATT_PAD_PWRON;
writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
via_pwron_sleep(host);
@ -770,7 +768,6 @@ static void via_sdc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (readb(addrbase + VIA_CRDR_PCISDCCLK) != clock)
writeb(clock, addrbase + VIA_CRDR_PCISDCCLK);
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
if (ios->power_mode != MMC_POWER_OFF)
@ -830,7 +827,6 @@ static void via_reset_pcictrl(struct via_crdr_mmc_host *host)
via_restore_pcictrlreg(host);
via_restore_sdcreg(host);
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
}
@ -925,7 +921,6 @@ static irqreturn_t via_sdc_isr(int irq, void *dev_id)
result = IRQ_HANDLED;
mmiowb();
out:
spin_unlock(&sdhost->lock);
@ -960,7 +955,6 @@ static void via_sdc_timeout(struct timer_list *t)
}
}
mmiowb();
spin_unlock_irqrestore(&sdhost->lock, flags);
}
@ -1012,7 +1006,6 @@ static void via_sdc_card_detect(struct work_struct *work)
tasklet_schedule(&host->finish_tasklet);
}
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
via_reset_pcictrl(host);
@ -1020,7 +1013,6 @@ static void via_sdc_card_detect(struct work_struct *work)
spin_lock_irqsave(&host->lock, flags);
}
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
via_print_pcictrl(host);
@ -1188,7 +1180,6 @@ static void via_sd_remove(struct pci_dev *pcidev)
/* Disable generating further interrupts */
writeb(0x0, sdhost->pcictrl_mmiobase + VIA_CRDR_PCIINTCTRL);
mmiowb();
if (sdhost->mrq) {
pr_err("%s: Controller removed during "
@ -1197,7 +1188,6 @@ static void via_sd_remove(struct pci_dev *pcidev)
/* make sure all DMA is stopped */
writel(VIA_CRDR_DMACTRL_SFTRST,
sdhost->ddma_mmiobase + VIA_CRDR_DMACTRL);
mmiowb();
sdhost->mrq->cmd->error = -ENOMEDIUM;
if (sdhost->mrq->stop)
sdhost->mrq->stop->error = -ENOMEDIUM;

2
drivers/mtd/nand/raw/r852.c
View File

@ -45,7 +45,6 @@ static inline void r852_write_reg(struct r852_device *dev,
int address, uint8_t value)
{
writeb(value, dev->mmio + address);
mmiowb();
}
@ -61,7 +60,6 @@ static inline void r852_write_reg_dword(struct r852_device *dev,
int address, uint32_t value)
{
writel(cpu_to_le32(value), dev->mmio + address);
mmiowb();
}
/* returns pointer to our private structure */

1
drivers/mtd/nand/raw/txx9ndfmc.c
View File

@ -159,7 +159,6 @@ static void txx9ndfmc_cmd_ctrl(struct nand_chip *chip, int cmd,
if ((ctrl & NAND_CTRL_CHANGE) && cmd == NAND_CMD_NONE)
txx9ndfmc_write(dev, 0, TXX9_NDFDTR);
}
mmiowb();
}
static int txx9ndfmc_dev_ready(struct nand_chip *chip)

1
drivers/net/ethernet/aeroflex/greth.c
View File

@ -613,7 +613,6 @@ static irqreturn_t greth_interrupt(int irq, void *dev_id)
napi_schedule(&greth->napi);
}
mmiowb();
spin_unlock(&greth->devlock);
return retval;

4
drivers/net/ethernet/alacritech/slicoss.c
View File

@ -345,8 +345,6 @@ static void slic_set_rx_mode(struct net_device *dev)
if (sdev->promisc != set_promisc) {
sdev->promisc = set_promisc;
slic_configure_rcv(sdev);
/* make sure writes to receiver cant leak out of the lock */
mmiowb();
}
spin_unlock_bh(&sdev->link_lock);
}
@ -1461,8 +1459,6 @@ static netdev_tx_t slic_xmit(struct sk_buff *skb, struct net_device *dev)
if (slic_get_free_tx_descs(txq) < SLIC_MAX_REQ_TX_DESCS)
netif_stop_queue(dev);
/* make sure writes to io-memory cant leak out of tx queue lock */
mmiowb();
return NETDEV_TX_OK;
drop_skb:

1
drivers/net/ethernet/amazon/ena/ena_com.c
View File

@ -2016,7 +2016,6 @@ void ena_com_aenq_intr_handler(struct ena_com_dev *dev, void *data)
mb();
writel_relaxed((u32)aenq->head,
dev->reg_bar + ENA_REGS_AENQ_HEAD_DB_OFF);
mmiowb();
}
int ena_com_dev_reset(struct ena_com_dev *ena_dev,

1
drivers/net/ethernet/atheros/atlx/atl1.c
View File

@ -2439,7 +2439,6 @@ static netdev_tx_t atl1_xmit_frame(struct sk_buff *skb,
atl1_tx_map(adapter, skb, ptpd);
atl1_tx_queue(adapter, count, ptpd);
atl1_update_mailbox(adapter);
mmiowb();
return NETDEV_TX_OK;
}

1
drivers/net/ethernet/atheros/atlx/atl2.c
View File

@ -908,7 +908,6 @@ static netdev_tx_t atl2_xmit_frame(struct sk_buff *skb,
ATL2_WRITE_REGW(&adapter->hw, REG_MB_TXD_WR_IDX,
(adapter->txd_write_ptr >> 2));
mmiowb();
dev_consume_skb_any(skb);
return NETDEV_TX_OK;
}

4
drivers/net/ethernet/broadcom/bnx2.c
View File

@ -3305,8 +3305,6 @@ next_rx:
BNX2_WR(bp, rxr->rx_bseq_addr, rxr->rx_prod_bseq);
mmiowb();
return rx_pkt;
}
@ -6723,8 +6721,6 @@ bnx2_start_xmit(struct sk_buff *skb, struct net_device *dev)
BNX2_WR16(bp, txr->tx_bidx_addr, prod);
BNX2_WR(bp, txr->tx_bseq_addr, txr->tx_prod_bseq);
mmiowb();
txr->tx_prod = prod;
if (unlikely(bnx2_tx_avail(bp, txr) <= MAX_SKB_FRAGS)) {

2
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
View File

@ -4166,8 +4166,6 @@ netdev_tx_t bnx2x_start_xmit(struct sk_buff *skb, struct net_device *dev)
DOORBELL_RELAXED(bp, txdata->cid, txdata->tx_db.raw);
mmiowb();
txdata->tx_bd_prod += nbd;
if (unlikely(bnx2x_tx_avail(bp, txdata) < MAX_DESC_PER_TX_PKT)) {

4
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
View File

@ -527,8 +527,6 @@ static inline void bnx2x_update_rx_prod(struct bnx2x *bp,
REG_WR_RELAXED(bp, fp->ustorm_rx_prods_offset + i * 4,
((u32 *)&rx_prods)[i]);
mmiowb();
DP(NETIF_MSG_RX_STATUS,
"queue[%d]: wrote bd_prod %u cqe_prod %u sge_prod %u\n",
fp->index, bd_prod, rx_comp_prod, rx_sge_prod);
@ -653,7 +651,6 @@ static inline void bnx2x_igu_ack_sb_gen(struct bnx2x *bp, u8 igu_sb_id,
REG_WR(bp, igu_addr, cmd_data.sb_id_and_flags);
/* Make sure that ACK is written */
mmiowb();
barrier();
}
@ -674,7 +671,6 @@ static inline void bnx2x_hc_ack_sb(struct bnx2x *bp, u8 sb_id,
REG_WR(bp, hc_addr, (*(u32 *)&igu_ack));
/* Make sure that ACK is written */
mmiowb();
barrier();
}

1
drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
View File

@ -2623,7 +2623,6 @@ static int bnx2x_run_loopback(struct bnx2x *bp, int loopback_mode)
wmb();
DOORBELL_RELAXED(bp, txdata->cid, txdata->tx_db.raw);
mmiowb();
barrier();
num_pkts++;

29
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
View File

@ -869,9 +869,6 @@ static void bnx2x_hc_int_disable(struct bnx2x *bp)
"write %x to HC %d (addr 0x%x)\n",
val, port, addr);
/* flush all outstanding writes */
mmiowb();
REG_WR(bp, addr, val);
if (REG_RD(bp, addr) != val)
BNX2X_ERR("BUG! Proper val not read from IGU!\n");
@ -887,9 +884,6 @@ static void bnx2x_igu_int_disable(struct bnx2x *bp)
DP(NETIF_MSG_IFDOWN, "write %x to IGU\n", val);
/* flush all outstanding writes */
mmiowb();
REG_WR(bp, IGU_REG_PF_CONFIGURATION, val);
if (REG_RD(bp, IGU_REG_PF_CONFIGURATION) != val)
BNX2X_ERR("BUG! Proper val not read from IGU!\n");
@ -1595,7 +1589,6 @@ static void bnx2x_hc_int_enable(struct bnx2x *bp)
/*
* Ensure that HC_CONFIG is written before leading/trailing edge config
*/
mmiowb();
barrier();
if (!CHIP_IS_E1(bp)) {
@ -1611,9 +1604,6 @@ static void bnx2x_hc_int_enable(struct bnx2x *bp)
REG_WR(bp, HC_REG_TRAILING_EDGE_0 + port*8, val);
REG_WR(bp, HC_REG_LEADING_EDGE_0 + port*8, val);
}
/* Make sure that interrupts are indeed enabled from here on */
mmiowb();
}
static void bnx2x_igu_int_enable(struct bnx2x *bp)
@ -1674,9 +1664,6 @@ static void bnx2x_igu_int_enable(struct bnx2x *bp)
REG_WR(bp, IGU_REG_TRAILING_EDGE_LATCH, val);
REG_WR(bp, IGU_REG_LEADING_EDGE_LATCH, val);
/* Make sure that interrupts are indeed enabled from here on */
mmiowb();
}
void bnx2x_int_enable(struct bnx2x *bp)
@ -3833,7 +3820,6 @@ static void bnx2x_sp_prod_update(struct bnx2x *bp)
REG_WR16_RELAXED(bp, BAR_XSTRORM_INTMEM + XSTORM_SPQ_PROD_OFFSET(func),
bp->spq_prod_idx);
mmiowb();
}
/**
@ -5244,7 +5230,6 @@ static void bnx2x_update_eq_prod(struct bnx2x *bp, u16 prod)
{
/* No memory barriers */
storm_memset_eq_prod(bp, prod, BP_FUNC(bp));
mmiowb();
}
static int bnx2x_cnic_handle_cfc_del(struct bnx2x *bp, u32 cid,
@ -6513,7 +6498,6 @@ void bnx2x_nic_init_cnic(struct bnx2x *bp)
/* flush all */
mb();
mmiowb();
}
void bnx2x_pre_irq_nic_init(struct bnx2x *bp)
@ -6553,7 +6537,6 @@ void bnx2x_post_irq_nic_init(struct bnx2x *bp, u32 load_code)
/* flush all before enabling interrupts */
mb();
mmiowb();
bnx2x_int_enable(bp);
@ -7775,12 +7758,10 @@ void bnx2x_igu_clear_sb_gen(struct bnx2x *bp, u8 func, u8 idu_sb_id, bool is_pf)
DP(NETIF_MSG_HW, "write 0x%08x to IGU(via GRC) addr 0x%x\n",
data, igu_addr_data);
REG_WR(bp, igu_addr_data, data);
mmiowb();
barrier();
DP(NETIF_MSG_HW, "write 0x%08x to IGU(via GRC) addr 0x%x\n",
ctl, igu_addr_ctl);
REG_WR(bp, igu_addr_ctl, ctl);
mmiowb();
barrier();
/* wait for clean up to finish */
@ -9550,7 +9531,6 @@ static void bnx2x_set_234_gates(struct bnx2x *bp, bool close)
DP(NETIF_MSG_HW | NETIF_MSG_IFUP, "%s gates #2, #3 and #4\n",
close ? "closing" : "opening");
mmiowb();
}
#define SHARED_MF_CLP_MAGIC 0x80000000 /* `magic' bit */
@ -9674,7 +9654,6 @@ static void bnx2x_pxp_prep(struct bnx2x *bp)
if (!CHIP_IS_E1(bp)) {
REG_WR(bp, PXP2_REG_RD_START_INIT, 0);
REG_WR(bp, PXP2_REG_RQ_RBC_DONE, 0);
mmiowb();
}
}
@ -9774,16 +9753,13 @@ static void bnx2x_process_kill_chip_reset(struct bnx2x *bp, bool global)
reset_mask1 & (~not_reset_mask1));
barrier();
mmiowb();
REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_SET,
reset_mask2 & (~stay_reset2));
barrier();
mmiowb();
REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_SET, reset_mask1);
mmiowb();
}
/**
@ -9867,9 +9843,6 @@ static int bnx2x_process_kill(struct bnx2x *bp, bool global)
REG_WR(bp, MISC_REG_UNPREPARED, 0);
barrier();
/* Make sure all is written to the chip before the reset */
mmiowb();
/* Wait for 1ms to empty GLUE and PCI-E core queues,
* PSWHST, GRC and PSWRD Tetris buffer.
*/
@ -14828,7 +14801,6 @@ static int bnx2x_drv_ctl(struct net_device *dev, struct drv_ctl_info *ctl)
if (rc)
break;
mmiowb();
barrier();
/* Start accepting on iSCSI L2 ring */
@ -14863,7 +14835,6 @@ static int bnx2x_drv_ctl(struct net_device *dev, struct drv_ctl_info *ctl)
if (!bnx2x_wait_sp_comp(bp, sp_bits))
BNX2X_ERR("rx_mode completion timed out!\n");
mmiowb();
barrier();
/* Unset iSCSI L2 MAC */

1
drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c
View File

@ -5039,7 +5039,6 @@ static inline int bnx2x_q_init(struct bnx2x *bp,
/* As no ramrod is sent, complete the command immediately */
o->complete_cmd(bp, o, BNX2X_Q_CMD_INIT);
mmiowb();
smp_mb();
return 0;

2
drivers/net/ethernet/broadcom/bnx2x/bnx2x_sriov.c
View File

@ -100,13 +100,11 @@ static void bnx2x_vf_igu_ack_sb(struct bnx2x *bp, struct bnx2x_virtf *vf,
DP(NETIF_MSG_HW, "write 0x%08x to IGU(via GRC) addr 0x%x\n",
cmd_data.sb_id_and_flags, igu_addr_data);
REG_WR(bp, igu_addr_data, cmd_data.sb_id_and_flags);
mmiowb();
barrier();
DP(NETIF_MSG_HW, "write 0x%08x to IGU(via GRC) addr 0x%x\n",
ctl, igu_addr_ctl);
REG_WR(bp, igu_addr_ctl, ctl);
mmiowb();
barrier();
}

4
drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.c
View File

@ -172,8 +172,6 @@ static int bnx2x_send_msg2pf(struct bnx2x *bp, u8 *done, dma_addr_t msg_mapping)
/* Trigger the PF FW */
writeb_relaxed(1, &zone_data->trigger.vf_pf_channel.addr_valid);
mmiowb();
/* Wait for PF to complete */
while ((tout >= 0) && (!*done)) {
msleep(interval);
@ -1179,7 +1177,6 @@ static void bnx2x_vf_mbx_resp_send_msg(struct bnx2x *bp,
/* ack the FW */
storm_memset_vf_mbx_ack(bp, vf->abs_vfid);
mmiowb();
/* copy the response header including status-done field,
* must be last dmae, must be after FW is acked
@ -2174,7 +2171,6 @@ static void bnx2x_vf_mbx_request(struct bnx2x *bp, struct bnx2x_virtf *vf,
*/
storm_memset_vf_mbx_ack(bp, vf->abs_vfid);
/* Firmware ack should be written before unlocking channel */
mmiowb();
bnx2x_unlock_vf_pf_channel(bp, vf, mbx->first_tlv.tl.type);
}
}

3
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -556,8 +556,6 @@ normal_tx:
tx_done:
mmiowb();
if (unlikely(bnxt_tx_avail(bp, txr) <= MAX_SKB_FRAGS + 1)) {
if (skb->xmit_more && !tx_buf->is_push)
bnxt_db_write(bp, &txr->tx_db, prod);
@ -2123,7 +2121,6 @@ static int bnxt_poll(struct napi_struct *napi, int budget)
&dim_sample);
net_dim(&cpr->dim, dim_sample);
}
mmiowb();
return work_done;
}

6
drivers/net/ethernet/broadcom/tg3.c
View File

@ -1073,7 +1073,6 @@ static void tg3_int_reenable(struct tg3_napi *tnapi)
struct tg3 *tp = tnapi->tp;
tw32_mailbox(tnapi->int_mbox, tnapi->last_tag << 24);
mmiowb();
/* When doing tagged status, this work check is unnecessary.
* The last_tag we write above tells the chip which piece of
@ -6999,7 +6998,6 @@ next_pkt_nopost:
tw32_rx_mbox(TG3_RX_JMB_PROD_IDX_REG,
tpr->rx_jmb_prod_idx);
}
mmiowb();
} else if (work_mask) {
/* rx_std_buffers[] and rx_jmb_buffers[] entries must be
* updated before the producer indices can be updated.
@ -7210,8 +7208,6 @@ static int tg3_poll_work(struct tg3_napi *tnapi, int work_done, int budget)
tw32_rx_mbox(TG3_RX_JMB_PROD_IDX_REG,
dpr->rx_jmb_prod_idx);
mmiowb();
if (err)
tw32_f(HOSTCC_MODE, tp->coal_now);
}
@ -7278,7 +7274,6 @@ static int tg3_poll_msix(struct napi_struct *napi, int budget)
HOSTCC_MODE_ENABLE |
tnapi->coal_now);
}
mmiowb();
break;
}
}
@ -8159,7 +8154,6 @@ static netdev_tx_t tg3_start_xmit(struct sk_buff *skb, struct net_device *dev)
if (!skb->xmit_more || netif_xmit_stopped(txq)) {
/* Packets are ready, update Tx producer idx on card. */
tw32_tx_mbox(tnapi->prodmbox, entry);
mmiowb();
}
return NETDEV_TX_OK;

10
drivers/net/ethernet/cavium/liquidio/cn66xx_device.c
View File

@ -38,9 +38,6 @@ int lio_cn6xxx_soft_reset(struct octeon_device *oct)
lio_pci_readq(oct, CN6XXX_CIU_SOFT_RST);
lio_pci_writeq(oct, 1, CN6XXX_CIU_SOFT_RST);
/* make sure that the reset is written before starting timer */
mmiowb();
/* Wait for 10ms as Octeon resets. */
mdelay(100);
@ -487,9 +484,6 @@ void lio_cn6xxx_disable_interrupt(struct octeon_device *oct,
/* Disable Interrupts */
writeq(0, cn6xxx->intr_enb_reg64);
/* make sure interrupts are really disabled */
mmiowb();
}
static void lio_cn6xxx_get_pcie_qlmport(struct octeon_device *oct)
@ -555,10 +549,6 @@ static int lio_cn6xxx_process_droq_intr_regs(struct octeon_device *oct)
value &= ~(1 << oq_no);
octeon_write_csr(oct, reg, value);
/* Ensure that the enable register is written.
*/
mmiowb();
spin_unlock(&cn6xxx->lock_for_droq_int_enb_reg);
}
}

1
drivers/net/ethernet/cavium/liquidio/octeon_device.c
View File

@ -1449,7 +1449,6 @@ void lio_enable_irq(struct octeon_droq *droq, struct octeon_instr_queue *iq)
iq->pkt_in_done -= iq->pkts_processed;
iq->pkts_processed = 0;
/* this write needs to be flushed before we release the lock */
mmiowb();
spin_unlock_bh(&iq->lock);
oct = iq->oct_dev;
}

4
drivers/net/ethernet/cavium/liquidio/octeon_droq.c
View File

@ -513,8 +513,6 @@ int octeon_retry_droq_refill(struct octeon_droq *droq)
*/
wmb();
writel(desc_refilled, droq->pkts_credit_reg);
/* make sure mmio write completes */
mmiowb();
if (pkts_credit + desc_refilled >= CN23XX_SLI_DEF_BP)
reschedule = 0;
@ -712,8 +710,6 @@ octeon_droq_fast_process_packets(struct octeon_device *oct,
*/
wmb();
writel(desc_refilled, droq->pkts_credit_reg);
/* make sure mmio write completes */
mmiowb();
}
}
} /* for (each packet)... */

1
drivers/net/ethernet/cavium/liquidio/request_manager.c
View File

@ -278,7 +278,6 @@ ring_doorbell(struct octeon_device *oct, struct octeon_instr_queue *iq)
if (atomic_read(&oct->status) == OCT_DEV_RUNNING) {
writel(iq->fill_cnt, iq->doorbell_reg);
/* make sure doorbell write goes through */
mmiowb();
iq->fill_cnt = 0;
iq->last_db_time = jiffies;
return;

5
drivers/net/ethernet/intel/e1000/e1000_main.c
View File

@ -3270,11 +3270,6 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
if (!skb->xmit_more ||
netif_xmit_stopped(netdev_get_tx_queue(netdev, 0))) {
writel(tx_ring->next_to_use, hw->hw_addr + tx_ring->tdt);
/* we need this if more than one processor can write to
* our tail at a time, it synchronizes IO on IA64/Altix
* systems
*/
mmiowb();
}
} else {
dev_kfree_skb_any(skb);

7
drivers/net/ethernet/intel/e1000e/netdev.c
View File

@ -3816,7 +3816,6 @@ static void e1000_flush_tx_ring(struct e1000_adapter *adapter)
if (tx_ring->next_to_use == tx_ring->count)
tx_ring->next_to_use = 0;
ew32(TDT(0), tx_ring->next_to_use);
mmiowb();
usleep_range(200, 250);
}
@ -5904,12 +5903,6 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb,
tx_ring->next_to_use);
else
writel(tx_ring->next_to_use, tx_ring->tail);
/* we need this if more than one processor can write
* to our tail at a time, it synchronizes IO on
*IA64/Altix systems
*/
mmiowb();
}
} else {
dev_kfree_skb_any(skb);

2
drivers/net/ethernet/intel/fm10k/fm10k_iov.c
View File

@ -321,8 +321,6 @@ static void fm10k_mask_aer_comp_abort(struct pci_dev *pdev)
pci_read_config_dword(pdev, pos + PCI_ERR_UNCOR_MASK, &err_mask);
err_mask |= PCI_ERR_UNC_COMP_ABORT;
pci_write_config_dword(pdev, pos + PCI_ERR_UNCOR_MASK, err_mask);
mmiowb();
}
int fm10k_iov_resume(struct pci_dev *pdev)

5
drivers/net/ethernet/intel/fm10k/fm10k_main.c
View File

@ -1037,11 +1037,6 @@ static void fm10k_tx_map(struct fm10k_ring *tx_ring,
/* notify HW of packet */
if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
writel(i, tx_ring->tail);
/* we need this if more than one processor can write to our tail
* at a time, it synchronizes IO on IA64/Altix systems
*/
mmiowb();
}
return;

5
drivers/net/ethernet/intel/i40e/i40e_txrx.c
View File

@ -3471,11 +3471,6 @@ static inline int i40e_tx_map(struct i40e_ring *tx_ring, struct sk_buff *skb,
/* notify HW of packet */
if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
writel(i, tx_ring->tail);
/* we need this if more than one processor can write to our tail
* at a time, it synchronizes IO on IA64/Altix systems
*/
mmiowb();
}
return 0;

5
drivers/net/ethernet/intel/iavf/iavf_txrx.c
View File

@ -2360,11 +2360,6 @@ static inline void iavf_tx_map(struct iavf_ring *tx_ring, struct sk_buff *skb,
/* notify HW of packet */
if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
writel(i, tx_ring->tail);
/* we need this if more than one processor can write to our tail
* at a time, it synchronizes IO on IA64/Altix systems
*/
mmiowb();
}
return;

5
drivers/net/ethernet/intel/ice/ice_txrx.c
View File

@ -1356,11 +1356,6 @@ ice_tx_map(struct ice_ring *tx_ring, struct ice_tx_buf *first,
/* notify HW of packet */
if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
writel(i, tx_ring->tail);
/* we need this if more than one processor can write to our tail
* at a time, it synchronizes IO on IA64/Altix systems
*/
mmiowb();
}
return;

5
drivers/net/ethernet/intel/igb/igb_main.c
View File

@ -6028,11 +6028,6 @@ static int igb_tx_map(struct igb_ring *tx_ring,
if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
writel(i, tx_ring->tail);
/* we need this if more than one processor can write to our tail
* at a time, it synchronizes IO on IA64/Altix systems
*/
mmiowb();
}
return 0;

4
drivers/net/ethernet/intel/igbvf/netdev.c
View File

@ -2279,10 +2279,6 @@ static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter,
tx_ring->buffer_info[first].next_to_watch = tx_desc;
tx_ring->next_to_use = i;
writel(i, adapter->hw.hw_addr + tx_ring->tail);
/* we need this if more than one processor can write to our tail
* at a time, it synchronizes IO on IA64/Altix systems
*/
mmiowb();
}
static netdev_tx_t igbvf_xmit_frame_ring_adv(struct sk_buff *skb,

5
drivers/net/ethernet/intel/igc/igc_main.c
View File

@ -892,11 +892,6 @@ static int igc_tx_map(struct igc_ring *tx_ring,
if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
writel(i, tx_ring->tail);
/* we need this if more than one processor can write to our tail
* at a time, it synchronizes IO on IA64/Altix systems
*/
mmiowb();
}
return 0;

5
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

@ -8299,11 +8299,6 @@ static int ixgbe_tx_map(struct ixgbe_ring *tx_ring,
if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) {
writel(i, tx_ring->tail);
/* we need this if more than one processor can write to our tail
* at a time, it synchronizes IO on IA64/Altix systems
*/
mmiowb();
}
return 0;

4
drivers/net/ethernet/marvell/sky2.c
View File

@ -1139,9 +1139,6 @@ static inline void sky2_put_idx(struct sky2_hw *hw, unsigned q, u16 idx)
/* Make sure write' to descriptors are complete before we tell hardware */
wmb();
sky2_write16(hw, Y2_QADDR(q, PREF_UNIT_PUT_IDX), idx);
/* Synchronize I/O on since next processor may write to tail */
mmiowb();
}
@ -1354,7 +1351,6 @@ stopped:
/* reset the Rx prefetch unit */
sky2_write32(hw, Y2_QADDR(rxq, PREF_UNIT_CTRL), PREF_UNIT_RST_SET);
mmiowb();
}
/* Clean out receive buffer area, assumes receiver hardware stopped */

4
drivers/net/ethernet/mellanox/mlx4/catas.c
View File

@ -129,10 +129,6 @@ static int mlx4_reset_slave(struct mlx4_dev *dev)
comm_flags = rst_req << COM_CHAN_RST_REQ_OFFSET;
__raw_writel((__force u32)cpu_to_be32(comm_flags),
(__iomem char *)priv->mfunc.comm + MLX4_COMM_CHAN_FLAGS);
/* Make sure that our comm channel write doesn't
* get mixed in with writes from another CPU.
*/
mmiowb();
end = msecs_to_jiffies(MLX4_COMM_TIME) + jiffies;
while (time_before(jiffies, end)) {

13
drivers/net/ethernet/mellanox/mlx4/cmd.c
View File

@ -281,7 +281,6 @@ static int mlx4_comm_cmd_post(struct mlx4_dev *dev, u8 cmd, u16 param)
val = param | (cmd << 16) | (priv->cmd.comm_toggle << 31);
__raw_writel((__force u32) cpu_to_be32(val),
&priv->mfunc.comm->slave_write);
mmiowb();
mutex_unlock(&dev->persist->device_state_mutex);
return 0;
}
@ -496,12 +495,6 @@ static int mlx4_cmd_post(struct mlx4_dev *dev, u64 in_param, u64 out_param,
(op_modifier << HCR_OPMOD_SHIFT) |
op), hcr + 6);
/*
* Make sure that our HCR writes don't get mixed in with
* writes from another CPU starting a FW command.
*/
mmiowb();
cmd->toggle = cmd->toggle ^ 1;
ret = 0;
@ -2206,7 +2199,6 @@ static void mlx4_master_do_cmd(struct mlx4_dev *dev, int slave, u8 cmd,
}
__raw_writel((__force u32) cpu_to_be32(reply),
&priv->mfunc.comm[slave].slave_read);
mmiowb();
return;
@ -2410,7 +2402,6 @@ int mlx4_multi_func_init(struct mlx4_dev *dev)
&priv->mfunc.comm[i].slave_write);
__raw_writel((__force u32) 0,
&priv->mfunc.comm[i].slave_read);
mmiowb();
for (port = 1; port <= MLX4_MAX_PORTS; port++) {
struct mlx4_vport_state *admin_vport;
struct mlx4_vport_state *oper_vport;
@ -2576,10 +2567,6 @@ void mlx4_report_internal_err_comm_event(struct mlx4_dev *dev)
slave_read |= (u32)COMM_CHAN_EVENT_INTERNAL_ERR;
__raw_writel((__force u32)cpu_to_be32(slave_read),
&priv->mfunc.comm[slave].slave_read);
/* Make sure that our comm channel write doesn't
* get mixed in with writes from another CPU.
*/
mmiowb();
}
}

1
drivers/net/ethernet/mellanox/mlx5/core/cmd.c
View File

@ -917,7 +917,6 @@ static void cmd_work_handler(struct work_struct *work)
mlx5_core_dbg(dev, "writing 0x%x to command doorbell\n", 1 << ent->idx);
wmb();
iowrite32be(1 << ent->idx, &dev->iseg->cmd_dbell);
mmiowb();
/* if not in polling don't use ent after this point */
if (cmd_mode == CMD_MODE_POLLING || poll_cmd) {
poll_timeout(ent);

2
drivers/net/ethernet/myricom/myri10ge/myri10ge.c
View File

@ -1439,7 +1439,6 @@ myri10ge_tx_done(struct myri10ge_slice_state *ss, int mcp_index)
tx->queue_active = 0;
put_be32(htonl(1), tx->send_stop);
mb();
mmiowb();
}
__netif_tx_unlock(dev_queue);
}
@ -2861,7 +2860,6 @@ again:
tx->queue_active = 1;
put_be32(htonl(1), tx->send_go);
mb();
mmiowb();
}
tx->pkt_start++;
if ((avail - count) < MXGEFW_MAX_SEND_DESC) {

2
drivers/net/ethernet/neterion/s2io.c
View File

@ -4153,8 +4153,6 @@ static netdev_tx_t s2io_xmit(struct sk_buff *skb, struct net_device *dev)
writeq(val64, &tx_fifo->List_Control);
mmiowb();
put_off++;
if (put_off == fifo->tx_curr_put_info.fifo_len + 1)
put_off = 0;

5
drivers/net/ethernet/neterion/vxge/vxge-main.c
View File

@ -1826,7 +1826,6 @@ static int vxge_poll_msix(struct napi_struct *napi, int budget)
vxge_hw_channel_msix_unmask(
(struct __vxge_hw_channel *)ring->handle,
ring->rx_vector_no);
mmiowb();
}
/* We are copying and returning the local variable, in case if after
@ -2234,8 +2233,6 @@ static irqreturn_t vxge_tx_msix_handle(int irq, void *dev_id)
vxge_hw_channel_msix_unmask((struct __vxge_hw_channel *)fifo->handle,
fifo->tx_vector_no);
mmiowb();
return IRQ_HANDLED;
}
@ -2272,14 +2269,12 @@ vxge_alarm_msix_handle(int irq, void *dev_id)
*/
vxge_hw_vpath_msix_mask(vdev->vpaths[i].handle, msix_id);
vxge_hw_vpath_msix_clear(vdev->vpaths[i].handle, msix_id);
mmiowb();
status = vxge_hw_vpath_alarm_process(vdev->vpaths[i].handle,
vdev->exec_mode);
if (status == VXGE_HW_OK) {
vxge_hw_vpath_msix_unmask(vdev->vpaths[i].handle,
msix_id);
mmiowb();
continue;
}
vxge_debug_intr(VXGE_ERR,

4
drivers/net/ethernet/neterion/vxge/vxge-traffic.c
View File

@ -1399,11 +1399,7 @@ static void __vxge_hw_non_offload_db_post(struct __vxge_hw_fifo *fifo,
VXGE_HW_NODBW_GET_NO_SNOOP(no_snoop),
&fifo->nofl_db->control_0);
mmiowb();
writeq(txdl_ptr, &fifo->nofl_db->txdl_ptr);
mmiowb();
}
/**

13
drivers/net/ethernet/qlogic/qed/qed_int.c
View File

@ -774,18 +774,12 @@ static inline u16 qed_attn_update_idx(struct qed_hwfn *p_hwfn,
{
u16 rc = 0, index;
/* Make certain HW write took affect */
mmiowb();
index = le16_to_cpu(p_sb_desc->sb_attn->sb_index);
if (p_sb_desc->index != index) {
p_sb_desc->index = index;
rc = QED_SB_ATT_IDX;
}
/* Make certain we got a consistent view with HW */
mmiowb();
return rc;
}
@ -1170,7 +1164,6 @@ static void qed_sb_ack_attn(struct qed_hwfn *p_hwfn,
/* Both segments (interrupts & acks) are written to same place address;
* Need to guarantee all commands will be received (in-order) by HW.
*/
mmiowb();
barrier();
}
@ -1805,9 +1798,6 @@ static void qed_int_igu_enable_attn(struct qed_hwfn *p_hwfn,
qed_wr(p_hwfn, p_ptt, IGU_REG_TRAILING_EDGE_LATCH, 0xfff);
qed_wr(p_hwfn, p_ptt, IGU_REG_ATTENTION_ENABLE, 0xfff);
/* Flush the writes to IGU */
mmiowb();
/* Unmask AEU signals toward IGU */
qed_wr(p_hwfn, p_ptt, MISC_REG_AEU_MASK_ATTN_IGU, 0xff);
}
@ -1871,9 +1861,6 @@ static void qed_int_igu_cleanup_sb(struct qed_hwfn *p_hwfn,
qed_wr(p_hwfn, p_ptt, IGU_REG_COMMAND_REG_CTRL, cmd_ctrl);
/* Flush the write to IGU */
mmiowb();
/* calculate where to read the status bit from */
sb_bit = 1 << (igu_sb_id % 32);
sb_bit_addr = igu_sb_id / 32 * sizeof(u32);

3
drivers/net/ethernet/qlogic/qed/qed_spq.c
View File

@ -341,9 +341,6 @@ void qed_eq_prod_update(struct qed_hwfn *p_hwfn, u16 prod)
USTORM_EQE_CONS_OFFSET(p_hwfn->rel_pf_id);
REG_WR16(p_hwfn, addr, prod);
/* keep prod updates ordered */
mmiowb();
}
int qed_eq_completion(struct qed_hwfn *p_hwfn, void *cookie)

8
drivers/net/ethernet/qlogic/qede/qede_ethtool.c
View File

@ -1526,14 +1526,6 @@ static int qede_selftest_transmit_traffic(struct qede_dev *edev,
barrier();
writel(txq->tx_db.raw, txq->doorbell_addr);
/* mmiowb is needed to synchronize doorbell writes from more than one
* processor. It guarantees that the write arrives to the device before
* the queue lock is released and another start_xmit is called (possibly
* on another CPU). Without this barrier, the next doorbell can bypass
* this doorbell. This is applicable to IA64/Altix systems.
*/
mmiowb();
for (i = 0; i < QEDE_SELFTEST_POLL_COUNT; i++) {
if (qede_txq_has_work(txq))
break;

8
drivers/net/ethernet/qlogic/qede/qede_fp.c
View File

@ -580,14 +580,6 @@ void qede_update_rx_prod(struct qede_dev *edev, struct qede_rx_queue *rxq)
internal_ram_wr(rxq->hw_rxq_prod_addr, sizeof(rx_prods),
(u32 *)&rx_prods);
/* mmiowb is needed to synchronize doorbell writes from more than one
* processor. It guarantees that the write arrives to the device before
* the napi lock is released and another qede_poll is called (possibly
* on another CPU). Without this barrier, the next doorbell can bypass
* this doorbell. This is applicable to IA64/Altix systems.
*/
mmiowb();
}
static void qede_get_rxhash(struct sk_buff *skb, u8 bitfields, __le32 rss_hash)

1
drivers/net/ethernet/qlogic/qla3xxx.c
View File

@ -1858,7 +1858,6 @@ static void ql_update_small_bufq_prod_index(struct ql3_adapter *qdev)
wmb();
writel_relaxed(qdev->small_buf_q_producer_index,
&port_regs->CommonRegs.rxSmallQProducerIndex);
mmiowb();
}
}

1
drivers/net/ethernet/qlogic/qlge/qlge.h
View File

@ -2181,7 +2181,6 @@ static inline void ql_write32(const struct ql_adapter *qdev, int reg, u32 val)
static inline void ql_write_db_reg(u32 val, void __iomem *addr)
{
writel(val, addr);
mmiowb();
}
/*

1
drivers/net/ethernet/qlogic/qlge/qlge_main.c
View File

@ -2695,7 +2695,6 @@ static netdev_tx_t qlge_send(struct sk_buff *skb, struct net_device *ndev)
wmb();
ql_write_db_reg_relaxed(tx_ring->prod_idx, tx_ring->prod_idx_db_reg);
mmiowb();
netif_printk(qdev, tx_queued, KERN_DEBUG, qdev->ndev,
"tx queued, slot %d, len %d\n",
tx_ring->prod_idx, skb->len);

9
drivers/net/ethernet/renesas/ravb_main.c
View File

@ -728,7 +728,6 @@ static irqreturn_t ravb_emac_interrupt(int irq, void *dev_id)
spin_lock(&priv->lock);
ravb_emac_interrupt_unlocked(ndev);
mmiowb();
spin_unlock(&priv->lock);
return IRQ_HANDLED;
}
@ -848,7 +847,6 @@ static irqreturn_t ravb_interrupt(int irq, void *dev_id)
result = IRQ_HANDLED;
}
mmiowb();
spin_unlock(&priv->lock);
return result;
}
@ -881,7 +879,6 @@ static irqreturn_t ravb_multi_interrupt(int irq, void *dev_id)
result = IRQ_HANDLED;
}
mmiowb();
spin_unlock(&priv->lock);
return result;
}
@ -898,7 +895,6 @@ static irqreturn_t ravb_dma_interrupt(int irq, void *dev_id, int q)
if (ravb_queue_interrupt(ndev, q))
result = IRQ_HANDLED;
mmiowb();
spin_unlock(&priv->lock);
return result;
}
@ -943,7 +939,6 @@ static int ravb_poll(struct napi_struct *napi, int budget)
ravb_write(ndev, ~(mask | TIS_RESERVED), TIS);
ravb_tx_free(ndev, q, true);
netif_wake_subqueue(ndev, q);
mmiowb();
spin_unlock_irqrestore(&priv->lock, flags);
}
}
@ -959,7 +954,6 @@ static int ravb_poll(struct napi_struct *napi, int budget)
ravb_write(ndev, mask, RIE0);
ravb_write(ndev, mask, TIE);
}
mmiowb();
spin_unlock_irqrestore(&priv->lock, flags);
/* Receive error message handling */
@ -1008,7 +1002,6 @@ static void ravb_adjust_link(struct net_device *ndev)
if (priv->no_avb_link && phydev->link)
ravb_rcv_snd_enable(ndev);
mmiowb();
spin_unlock_irqrestore(&priv->lock, flags);
if (new_state && netif_msg_link(priv))
@ -1601,7 +1594,6 @@ static netdev_tx_t ravb_start_xmit(struct sk_buff *skb, struct net_device *ndev)
netif_stop_subqueue(ndev, q);
exit:
mmiowb();
spin_unlock_irqrestore(&priv->lock, flags);
return NETDEV_TX_OK;
@ -1673,7 +1665,6 @@ static void ravb_set_rx_mode(struct net_device *ndev)
spin_lock_irqsave(&priv->lock, flags);
ravb_modify(ndev, ECMR, ECMR_PRM,
ndev->flags & IFF_PROMISC ? ECMR_PRM : 0);
mmiowb();
spin_unlock_irqrestore(&priv->lock, flags);
}

3
drivers/net/ethernet/renesas/ravb_ptp.c
View File

@ -196,7 +196,6 @@ static int ravb_ptp_extts(struct ptp_clock_info *ptp,
ravb_write(ndev, GIE_PTCS, GIE);
else
ravb_write(ndev, GID_PTCD, GID);
mmiowb();
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
@ -259,7 +258,6 @@ static int ravb_ptp_perout(struct ptp_clock_info *ptp,
else
ravb_write(ndev, GID_PTMD0, GID);
}
mmiowb();
spin_unlock_irqrestore(&priv->lock, flags);
return error;
@ -331,7 +329,6 @@ void ravb_ptp_init(struct net_device *ndev, struct platform_device *pdev)
spin_lock_irqsave(&priv->lock, flags);
ravb_wait(ndev, GCCR, GCCR_TCR, GCCR_TCR_NOREQ);
ravb_modify(ndev, GCCR, GCCR_TCSS, GCCR_TCSS_ADJGPTP);
mmiowb();
spin_unlock_irqrestore(&priv->lock, flags);
priv->ptp.clock = ptp_clock_register(&priv->ptp.info, &pdev->dev);

1
drivers/net/ethernet/renesas/sh_eth.c
View File

@ -2010,7 +2010,6 @@ static void sh_eth_adjust_link(struct net_device *ndev)
if ((mdp->cd->no_psr || mdp->no_ether_link) && phydev->link)
sh_eth_rcv_snd_enable(ndev);
mmiowb();
spin_unlock_irqrestore(&mdp->lock, flags);
if (new_state && netif_msg_link(mdp))

2
drivers/net/ethernet/sfc/falcon/io.h
View File

@ -108,7 +108,6 @@ static inline void ef4_writeo(struct ef4_nic *efx, const ef4_oword_t *value,
_ef4_writed(efx, value->u32[2], reg + 8);
_ef4_writed(efx, value->u32[3], reg + 12);
#endif
mmiowb();
spin_unlock_irqrestore(&efx->biu_lock, flags);
}
@ -130,7 +129,6 @@ static inline void ef4_sram_writeq(struct ef4_nic *efx, void __iomem *membase,
__raw_writel((__force u32)value->u32[0], membase + addr);
__raw_writel((__force u32)value->u32[1], membase + addr + 4);
#endif
mmiowb();
spin_unlock_irqrestore(&efx->biu_lock, flags);
}

2
drivers/net/ethernet/sfc/io.h
View File

@ -120,7 +120,6 @@ static inline void efx_writeo(struct efx_nic *efx, const efx_oword_t *value,
_efx_writed(efx, value->u32[2], reg + 8);
_efx_writed(efx, value->u32[3], reg + 12);
#endif
mmiowb();
spin_unlock_irqrestore(&efx->biu_lock, flags);
}
@ -142,7 +141,6 @@ static inline void efx_sram_writeq(struct efx_nic *efx, void __iomem *membase,
__raw_writel((__force u32)value->u32[0], membase + addr);
__raw_writel((__force u32)value->u32[1], membase + addr + 4);
#endif
mmiowb();
spin_unlock_irqrestore(&efx->biu_lock, flags);
}

14
drivers/net/ethernet/silan/sc92031.c
View File

@ -361,7 +361,6 @@ static void sc92031_disable_interrupts(struct net_device *dev)
/* stop interrupts */
iowrite32(0, port_base + IntrMask);
_sc92031_dummy_read(port_base);
mmiowb();
/* wait for any concurrent interrupt/tasklet to finish */
synchronize_irq(priv->pdev->irq);
@ -379,7 +378,6 @@ static void sc92031_enable_interrupts(struct net_device *dev)
wmb();
iowrite32(IntrBits, port_base + IntrMask);
mmiowb();
}
static void _sc92031_disable_tx_rx(struct net_device *dev)
@ -867,7 +865,6 @@ out:
rmb();
iowrite32(intr_mask, port_base + IntrMask);
mmiowb();
spin_unlock(&priv->lock);
}
@ -901,7 +898,6 @@ out_none:
rmb();
iowrite32(intr_mask, port_base + IntrMask);
mmiowb();
return IRQ_NONE;
}
@ -978,7 +974,6 @@ static netdev_tx_t sc92031_start_xmit(struct sk_buff *skb,
iowrite32(priv->tx_bufs_dma_addr + entry * TX_BUF_SIZE,
port_base + TxAddr0 + entry * 4);
iowrite32(tx_status, port_base + TxStatus0 + entry * 4);
mmiowb();
if (priv->tx_head - priv->tx_tail >= NUM_TX_DESC)
netif_stop_queue(dev);
@ -1024,7 +1019,6 @@ static int sc92031_open(struct net_device *dev)
spin_lock_bh(&priv->lock);
_sc92031_reset(dev);
mmiowb();
spin_unlock_bh(&priv->lock);
sc92031_enable_interrupts(dev);
@ -1060,7 +1054,6 @@ static int sc92031_stop(struct net_device *dev)
_sc92031_disable_tx_rx(dev);
_sc92031_tx_clear(dev);
mmiowb();
spin_unlock_bh(&priv->lock);
@ -1081,7 +1074,6 @@ static void sc92031_set_multicast_list(struct net_device *dev)
_sc92031_set_mar(dev);
_sc92031_set_rx_config(dev);
mmiowb();
spin_unlock_bh(&priv->lock);
}
@ -1098,7 +1090,6 @@ static void sc92031_tx_timeout(struct net_device *dev)
priv->tx_timeouts++;
_sc92031_reset(dev);
mmiowb();
spin_unlock(&priv->lock);
@ -1140,7 +1131,6 @@ sc92031_ethtool_get_link_ksettings(struct net_device *dev,
output_status = _sc92031_mii_read(port_base, MII_OutputStatus);
_sc92031_mii_scan(port_base);
mmiowb();
spin_unlock_bh(&priv->lock);
@ -1311,7 +1301,6 @@ static int sc92031_ethtool_set_wol(struct net_device *dev,
priv->pm_config = pm_config;
iowrite32(pm_config, port_base + PMConfig);
mmiowb();
spin_unlock_bh(&priv->lock);
@ -1337,7 +1326,6 @@ static int sc92031_ethtool_nway_reset(struct net_device *dev)
out:
_sc92031_mii_scan(port_base);
mmiowb();
spin_unlock_bh(&priv->lock);
@ -1530,7 +1518,6 @@ static int sc92031_suspend(struct pci_dev *pdev, pm_message_t state)
_sc92031_disable_tx_rx(dev);
_sc92031_tx_clear(dev);
mmiowb();
spin_unlock_bh(&priv->lock);
@ -1555,7 +1542,6 @@ static int sc92031_resume(struct pci_dev *pdev)
spin_lock_bh(&priv->lock);
_sc92031_reset(dev);
mmiowb();
spin_unlock_bh(&priv->lock);
sc92031_enable_interrupts(dev);

3
drivers/net/ethernet/via/via-rhine.c
View File

@ -571,7 +571,6 @@ static void rhine_ack_events(struct rhine_private *rp, u32 mask)
if (rp->quirks & rqStatusWBRace)
iowrite8(mask >> 16, ioaddr + IntrStatus2);
iowrite16(mask, ioaddr + IntrStatus);
mmiowb();
}
/*
@ -863,7 +862,6 @@ static int rhine_napipoll(struct napi_struct *napi, int budget)
if (work_done < budget) {
napi_complete_done(napi, work_done);
iowrite16(enable_mask, ioaddr + IntrEnable);
mmiowb();
}
return work_done;
}
@ -1893,7 +1891,6 @@ static netdev_tx_t rhine_start_tx(struct sk_buff *skb,
static void rhine_irq_disable(struct rhine_private *rp)
{
iowrite16(0x0000, rp->base + IntrEnable);
mmiowb();
}
/* The interrupt handler does all of the Rx thread work and cleans up

6
drivers/net/ethernet/wiznet/w5100.c
View File

@ -219,7 +219,6 @@ static inline int __w5100_write_direct(struct net_device *ndev, u32 addr,
static inline int w5100_write_direct(struct net_device *ndev, u32 addr, u8 data)
{
__w5100_write_direct(ndev, addr, data);
mmiowb();
return 0;
}
@ -236,7 +235,6 @@ static int w5100_write16_direct(struct net_device *ndev, u32 addr, u16 data)
{
__w5100_write_direct(ndev, addr, data >> 8);
__w5100_write_direct(ndev, addr + 1, data);
mmiowb();
return 0;
}
@ -260,8 +258,6 @@ static int w5100_writebulk_direct(struct net_device *ndev, u32 addr,
for (i = 0; i < len; i++, addr++)
__w5100_write_direct(ndev, addr, *buf++);
mmiowb();
return 0;
}
@ -375,7 +371,6 @@ static int w5100_readbulk_indirect(struct net_device *ndev, u32 addr, u8 *buf,
for (i = 0; i < len; i++)
*buf++ = w5100_read_direct(ndev, W5100_IDM_DR);
mmiowb();
spin_unlock_irqrestore(&mmio_priv->reg_lock, flags);
return 0;
@ -394,7 +389,6 @@ static int w5100_writebulk_indirect(struct net_device *ndev, u32 addr,
for (i = 0; i < len; i++)
__w5100_write_direct(ndev, W5100_IDM_DR, *buf++);
mmiowb();
spin_unlock_irqrestore(&mmio_priv->reg_lock, flags);
return 0;

15
drivers/net/ethernet/wiznet/w5300.c
View File

@ -141,7 +141,6 @@ static u16 w5300_read_indirect(struct w5300_priv *priv, u16 addr)
spin_lock_irqsave(&priv->reg_lock, flags);
w5300_write_direct(priv, W5300_IDM_AR, addr);
mmiowb();
data = w5300_read_direct(priv, W5300_IDM_DR);
spin_unlock_irqrestore(&priv->reg_lock, flags);
@ -154,9 +153,7 @@ static void w5300_write_indirect(struct w5300_priv *priv, u16 addr, u16 data)
spin_lock_irqsave(&priv->reg_lock, flags);
w5300_write_direct(priv, W5300_IDM_AR, addr);
mmiowb();
w5300_write_direct(priv, W5300_IDM_DR, data);
mmiowb();
spin_unlock_irqrestore(&priv->reg_lock, flags);
}
@ -192,7 +189,6 @@ static int w5300_command(struct w5300_priv *priv, u16 cmd)
unsigned long timeout = jiffies + msecs_to_jiffies(100);
w5300_write(priv, W5300_S0_CR, cmd);
mmiowb();
while (w5300_read(priv, W5300_S0_CR) != 0) {
if (time_after(jiffies, timeout))
@ -241,18 +237,15 @@ static void w5300_write_macaddr(struct w5300_priv *priv)
w5300_write(priv, W5300_SHARH,
ndev->dev_addr[4] << 8 |
ndev->dev_addr[5]);
mmiowb();
}
static void w5300_hw_reset(struct w5300_priv *priv)
{
w5300_write_direct(priv, W5300_MR, MR_RST);
mmiowb();
mdelay(5);
w5300_write_direct(priv, W5300_MR, priv->indirect ?
MR_WDF(7) | MR_PB | MR_IND :
MR_WDF(7) | MR_PB);
mmiowb();
w5300_write(priv, W5300_IMR, 0);
w5300_write_macaddr(priv);
@ -264,24 +257,20 @@ static void w5300_hw_reset(struct w5300_priv *priv)
w5300_write32(priv, W5300_TMSRL, 64 << 24);
w5300_write32(priv, W5300_TMSRH, 0);
w5300_write(priv, W5300_MTYPE, 0x00ff);
mmiowb();
}
static void w5300_hw_start(struct w5300_priv *priv)
{
w5300_write(priv, W5300_S0_MR, priv->promisc ?
S0_MR_MACRAW : S0_MR_MACRAW_MF);
mmiowb();
w5300_command(priv, S0_CR_OPEN);
w5300_write(priv, W5300_S0_IMR, S0_IR_RECV | S0_IR_SENDOK);
w5300_write(priv, W5300_IMR, IR_S0);
mmiowb();
}
static void w5300_hw_close(struct w5300_priv *priv)
{
w5300_write(priv, W5300_IMR, 0);
mmiowb();
w5300_command(priv, S0_CR_CLOSE);
}
@ -372,7 +361,6 @@ static netdev_tx_t w5300_start_tx(struct sk_buff *skb, struct net_device *ndev)
netif_stop_queue(ndev);
w5300_write_frame(priv, skb->data, skb->len);
mmiowb();
ndev->stats.tx_packets++;
ndev->stats.tx_bytes += skb->len;
dev_kfree_skb(skb);
@ -419,7 +407,6 @@ static int w5300_napi_poll(struct napi_struct *napi, int budget)
if (rx_count < budget) {
napi_complete_done(napi, rx_count);
w5300_write(priv, W5300_IMR, IR_S0);
mmiowb();
}
return rx_count;
@ -434,7 +421,6 @@ static irqreturn_t w5300_interrupt(int irq, void *ndev_instance)
if (!ir)
return IRQ_NONE;
w5300_write(priv, W5300_S0_IR, ir);
mmiowb();
if (ir & S0_IR_SENDOK) {
netif_dbg(priv, tx_done, ndev, "tx done\n");
@ -444,7 +430,6 @@ static irqreturn_t w5300_interrupt(int irq, void *ndev_instance)
if (ir & S0_IR_RECV) {
if (napi_schedule_prep(&priv->napi)) {
w5300_write(priv, W5300_IMR, 0);
mmiowb();
__napi_schedule(&priv->napi);
}
}

4
drivers/net/wireless/ath/ath5k/base.c
View File

@ -837,7 +837,6 @@ ath5k_txbuf_setup(struct ath5k_hw *ah, struct ath5k_buf *bf,
txq->link = &ds->ds_link;
ath5k_hw_start_tx_dma(ah, txq->qnum);
mmiowb();
spin_unlock_bh(&txq->lock);
return 0;
@ -2174,7 +2173,6 @@ ath5k_beacon_config(struct ath5k_hw *ah)
}
ath5k_hw_set_imr(ah, ah->imask);
mmiowb();
spin_unlock_bh(&ah->block);
}
@ -2779,7 +2777,6 @@ int ath5k_start(struct ieee80211_hw *hw)
ret = 0;
done:
mmiowb();
mutex_unlock(&ah->lock);
set_bit(ATH_STAT_STARTED, ah->status);
@ -2839,7 +2836,6 @@ void ath5k_stop(struct ieee80211_hw *hw)
"putting device to sleep\n");
}
mmiowb();
mutex_unlock(&ah->lock);
ath5k_stop_tasklets(ah);

2
drivers/net/wireless/ath/ath5k/mac80211-ops.c
View File

@ -263,7 +263,6 @@ ath5k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
common->curaid = 0;
ath5k_hw_set_bssid(ah);
mmiowb();
}
if (changes & BSS_CHANGED_BEACON_INT)
@ -528,7 +527,6 @@ ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
ret = -EINVAL;
}
mmiowb();
mutex_unlock(&ah->lock);
return ret;
}

7
drivers/net/wireless/broadcom/b43/main.c
View File

@ -485,7 +485,6 @@ static void b43_ram_write(struct b43_wldev *dev, u16 offset, u32 val)
val = swab32(val);
b43_write32(dev, B43_MMIO_RAM_CONTROL, offset);
mmiowb();
b43_write32(dev, B43_MMIO_RAM_DATA, val);
}
@ -656,9 +655,7 @@ static void b43_tsf_write_locked(struct b43_wldev *dev, u64 tsf)
/* The hardware guarantees us an atomic write, if we
* write the low register first. */
b43_write32(dev, B43_MMIO_REV3PLUS_TSF_LOW, low);
mmiowb();
b43_write32(dev, B43_MMIO_REV3PLUS_TSF_HIGH, high);
mmiowb();
}
void b43_tsf_write(struct b43_wldev *dev, u64 tsf)
@ -1822,11 +1819,9 @@ static void b43_beacon_update_trigger_work(struct work_struct *work)
if (b43_bus_host_is_sdio(dev->dev)) {
/* wl->mutex is enough. */
b43_do_beacon_update_trigger_work(dev);
mmiowb();
} else {
spin_lock_irq(&wl->hardirq_lock);
b43_do_beacon_update_trigger_work(dev);
mmiowb();
spin_unlock_irq(&wl->hardirq_lock);
}
}
@ -2078,7 +2073,6 @@ static irqreturn_t b43_interrupt_thread_handler(int irq, void *dev_id)
mutex_lock(&dev->wl->mutex);
b43_do_interrupt_thread(dev);
mmiowb();
mutex_unlock(&dev->wl->mutex);
return IRQ_HANDLED;
@ -2143,7 +2137,6 @@ static irqreturn_t b43_interrupt_handler(int irq, void *dev_id)
spin_lock(&dev->wl->hardirq_lock);
ret = b43_do_interrupt(dev);
mmiowb();
spin_unlock(&dev->wl->hardirq_lock);
return ret;

1
drivers/net/wireless/broadcom/b43/sysfs.c
View File

@ -129,7 +129,6 @@ static ssize_t b43_attr_interfmode_store(struct device *dev,
} else
err = -ENOSYS;
mmiowb();
mutex_unlock(&wldev->wl->mutex);
return err ? err : count;

2
drivers/net/wireless/broadcom/b43legacy/ilt.c
View File

@ -315,14 +315,12 @@ const u16 b43legacy_ilt_sigmasqr2[B43legacy_ILT_SIGMASQR_SIZE] = {
void b43legacy_ilt_write(struct b43legacy_wldev *dev, u16 offset, u16 val)
{
b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_CTRL, offset);
mmiowb();
b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_DATA1, val);
}
void b43legacy_ilt_write32(struct b43legacy_wldev *dev, u16 offset, u32 val)
{
b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_CTRL, offset);
mmiowb();
b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_DATA2,
(val & 0xFFFF0000) >> 16);
b43legacy_phy_write(dev, B43legacy_PHY_ILT_G_DATA1,

20
drivers/net/wireless/broadcom/b43legacy/main.c
View File

@ -264,7 +264,6 @@ static void b43legacy_ram_write(struct b43legacy_wldev *dev, u16 offset,
val = swab32(val);
b43legacy_write32(dev, B43legacy_MMIO_RAM_CONTROL, offset);
mmiowb();
b43legacy_write32(dev, B43legacy_MMIO_RAM_DATA, val);
}
@ -341,14 +340,11 @@ void b43legacy_shm_write32(struct b43legacy_wldev *dev,
if (offset & 0x0003) {
/* Unaligned access */
b43legacy_shm_control_word(dev, routing, offset >> 2);
mmiowb();
b43legacy_write16(dev,
B43legacy_MMIO_SHM_DATA_UNALIGNED,
(value >> 16) & 0xffff);
mmiowb();
b43legacy_shm_control_word(dev, routing,
(offset >> 2) + 1);
mmiowb();
b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA,
value & 0xffff);
return;
@ -356,7 +352,6 @@ void b43legacy_shm_write32(struct b43legacy_wldev *dev,
offset >>= 2;
}
b43legacy_shm_control_word(dev, routing, offset);
mmiowb();
b43legacy_write32(dev, B43legacy_MMIO_SHM_DATA, value);
}
@ -368,7 +363,6 @@ void b43legacy_shm_write16(struct b43legacy_wldev *dev, u16 routing, u16 offset,
if (offset & 0x0003) {
/* Unaligned access */
b43legacy_shm_control_word(dev, routing, offset >> 2);
mmiowb();
b43legacy_write16(dev,
B43legacy_MMIO_SHM_DATA_UNALIGNED,
value);
@ -377,7 +371,6 @@ void b43legacy_shm_write16(struct b43legacy_wldev *dev, u16 routing, u16 offset,
offset >>= 2;
}
b43legacy_shm_control_word(dev, routing, offset);
mmiowb();
b43legacy_write16(dev, B43legacy_MMIO_SHM_DATA, value);
}
@ -471,7 +464,6 @@ static void b43legacy_time_lock(struct b43legacy_wldev *dev)
status = b43legacy_read32(dev, B43legacy_MMIO_MACCTL);
status |= B43legacy_MACCTL_TBTTHOLD;
b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
mmiowb();
}
static void b43legacy_time_unlock(struct b43legacy_wldev *dev)
@ -494,10 +486,8 @@ static void b43legacy_tsf_write_locked(struct b43legacy_wldev *dev, u64 tsf)
u32 hi = (tsf & 0xFFFFFFFF00000000ULL) >> 32;
b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW, 0);
mmiowb();
b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_HIGH,
hi);
mmiowb();
b43legacy_write32(dev, B43legacy_MMIO_REV3PLUS_TSF_LOW,
lo);
} else {
@ -507,13 +497,9 @@ static void b43legacy_tsf_write_locked(struct b43legacy_wldev *dev, u64 tsf)
u16 v3 = (tsf & 0xFFFF000000000000ULL) >> 48;
b43legacy_write16(dev, B43legacy_MMIO_TSF_0, 0);
mmiowb();
b43legacy_write16(dev, B43legacy_MMIO_TSF_3, v3);
mmiowb();
b43legacy_write16(dev, B43legacy_MMIO_TSF_2, v2);
mmiowb();
b43legacy_write16(dev, B43legacy_MMIO_TSF_1, v1);
mmiowb();
b43legacy_write16(dev, B43legacy_MMIO_TSF_0, v0);
}
}
@ -1250,7 +1236,6 @@ static void b43legacy_beacon_update_trigger_work(struct work_struct *work)
/* The handler might have updated the IRQ mask. */
b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK,
dev->irq_mask);
mmiowb();
spin_unlock_irq(&wl->irq_lock);
}
mutex_unlock(&wl->mutex);
@ -1346,7 +1331,6 @@ static void b43legacy_interrupt_tasklet(struct b43legacy_wldev *dev)
dma_reason[2], dma_reason[3],
dma_reason[4], dma_reason[5]);
b43legacy_controller_restart(dev, "DMA error");
mmiowb();
spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
return;
}
@ -1396,7 +1380,6 @@ static void b43legacy_interrupt_tasklet(struct b43legacy_wldev *dev)
handle_irq_transmit_status(dev);
b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
mmiowb();
spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
}
@ -1488,7 +1471,6 @@ static irqreturn_t b43legacy_interrupt_handler(int irq, void *dev_id)
dev->irq_reason = reason;
tasklet_schedule(&dev->isr_tasklet);
out:
mmiowb();
spin_unlock(&dev->wl->irq_lock);
return ret;
@ -2781,7 +2763,6 @@ static int b43legacy_op_dev_config(struct ieee80211_hw *hw,
spin_lock_irqsave(&wl->irq_lock, flags);
b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
mmiowb();
spin_unlock_irqrestore(&wl->irq_lock, flags);
out_unlock_mutex:
mutex_unlock(&wl->mutex);
@ -2900,7 +2881,6 @@ static void b43legacy_op_bss_info_changed(struct ieee80211_hw *hw,
spin_lock_irqsave(&wl->irq_lock, flags);
b43legacy_write32(dev, B43legacy_MMIO_GEN_IRQ_MASK, dev->irq_mask);
/* XXX: why? */
mmiowb();
spin_unlock_irqrestore(&wl->irq_lock, flags);
out_unlock_mutex:
mutex_unlock(&wl->mutex);

1
drivers/net/wireless/broadcom/b43legacy/phy.c
View File

@ -134,7 +134,6 @@ u16 b43legacy_phy_read(struct b43legacy_wldev *dev, u16 offset)
void b43legacy_phy_write(struct b43legacy_wldev *dev, u16 offset, u16 val)
{
b43legacy_write16(dev, B43legacy_MMIO_PHY_CONTROL, offset);
mmiowb();
b43legacy_write16(dev, B43legacy_MMIO_PHY_DATA, val);
}

1
drivers/net/wireless/broadcom/b43legacy/pio.h
View File

@ -92,7 +92,6 @@ void b43legacy_pio_write(struct b43legacy_pioqueue *queue,
u16 offset, u16 value)
{
b43legacy_write16(queue->dev, queue->mmio_base + offset, value);
mmiowb();
}

4
drivers/net/wireless/broadcom/b43legacy/radio.c
View File

@ -95,7 +95,6 @@ void b43legacy_radio_lock(struct b43legacy_wldev *dev)
B43legacy_WARN_ON(status & B43legacy_MACCTL_RADIOLOCK);
status |= B43legacy_MACCTL_RADIOLOCK;
b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
mmiowb();
udelay(10);
}
@ -108,7 +107,6 @@ void b43legacy_radio_unlock(struct b43legacy_wldev *dev)
B43legacy_WARN_ON(!(status & B43legacy_MACCTL_RADIOLOCK));
status &= ~B43legacy_MACCTL_RADIOLOCK;
b43legacy_write32(dev, B43legacy_MMIO_MACCTL, status);
mmiowb();
}
u16 b43legacy_radio_read16(struct b43legacy_wldev *dev, u16 offset)
@ -141,7 +139,6 @@ u16 b43legacy_radio_read16(struct b43legacy_wldev *dev, u16 offset)
void b43legacy_radio_write16(struct b43legacy_wldev *dev, u16 offset, u16 val)
{
b43legacy_write16(dev, B43legacy_MMIO_RADIO_CONTROL, offset);
mmiowb();
b43legacy_write16(dev, B43legacy_MMIO_RADIO_DATA_LOW, val);
}
@ -333,7 +330,6 @@ u8 b43legacy_radio_aci_scan(struct b43legacy_wldev *dev)
void b43legacy_nrssi_hw_write(struct b43legacy_wldev *dev, u16 offset, s16 val)
{
b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_CTRL, offset);
mmiowb();
b43legacy_phy_write(dev, B43legacy_PHY_NRSSILT_DATA, (u16)val);
}

1
drivers/net/wireless/broadcom/b43legacy/sysfs.c
View File

@ -143,7 +143,6 @@ static ssize_t b43legacy_attr_interfmode_store(struct device *dev,
if (err)
b43legacyerr(wldev->wl, "Interference Mitigation not "
"supported by device\n");
mmiowb();
spin_unlock_irqrestore(&wldev->wl->irq_lock, flags);
mutex_unlock(&wldev->wl->mutex);

7
drivers/net/wireless/intel/iwlegacy/common.h
View File

@ -2030,13 +2030,6 @@ static inline void
_il_release_nic_access(struct il_priv *il)
{
_il_clear_bit(il, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
/*
* In above we are reading CSR_GP_CNTRL register, what will flush any
* previous writes, but still want write, which clear MAC_ACCESS_REQ
* bit, be performed on PCI bus before any other writes scheduled on
* different CPUs (after we drop reg_lock).
*/
mmiowb();
}
static inline u32

1
drivers/net/wireless/intel/iwlwifi/pcie/trans.c
View File

@ -2067,7 +2067,6 @@ static void iwl_trans_pcie_release_nic_access(struct iwl_trans *trans,
* MAC_ACCESS_REQ bit to be performed before any other writes
* scheduled on different CPUs (after we drop reg_lock).
*/
mmiowb();
out:
spin_unlock_irqrestore(&trans_pcie->reg_lock, *flags);
}

7
drivers/ntb/hw/idt/ntb_hw_idt.c
View File

@ -358,8 +358,6 @@ static void idt_sw_write(struct idt_ntb_dev *ndev,
iowrite32((u32)reg, ndev->cfgspc + (ptrdiff_t)IDT_NT_GASAADDR);
/* Put the new value of the register */
iowrite32(data, ndev->cfgspc + (ptrdiff_t)IDT_NT_GASADATA);
/* Make sure the PCIe transactions are executed */
mmiowb();
/* Unlock GASA registers operations */
spin_unlock_irqrestore(&ndev->gasa_lock, irqflags);
}
@ -750,7 +748,6 @@ static void idt_ntb_local_link_enable(struct idt_ntb_dev *ndev)
spin_lock_irqsave(&ndev->mtbl_lock, irqflags);
idt_nt_write(ndev, IDT_NT_NTMTBLADDR, ndev->part);
idt_nt_write(ndev, IDT_NT_NTMTBLDATA, mtbldata);
mmiowb();
spin_unlock_irqrestore(&ndev->mtbl_lock, irqflags);
/* Notify the peers by setting and clearing the global signal bit */
@ -778,7 +775,6 @@ static void idt_ntb_local_link_disable(struct idt_ntb_dev *ndev)
spin_lock_irqsave(&ndev->mtbl_lock, irqflags);
idt_nt_write(ndev, IDT_NT_NTMTBLADDR, ndev->part);
idt_nt_write(ndev, IDT_NT_NTMTBLDATA, 0);
mmiowb();
spin_unlock_irqrestore(&ndev->mtbl_lock, irqflags);
/* Notify the peers by setting and clearing the global signal bit */
@ -1339,7 +1335,6 @@ static int idt_ntb_peer_mw_set_trans(struct ntb_dev *ntb, int pidx, int widx,
idt_nt_write(ndev, IDT_NT_LUTLDATA, (u32)addr);
idt_nt_write(ndev, IDT_NT_LUTMDATA, (u32)(addr >> 32));
idt_nt_write(ndev, IDT_NT_LUTUDATA, data);
mmiowb();
spin_unlock_irqrestore(&ndev->lut_lock, irqflags);
/* Limit address isn't specified since size is fixed for LUT */
}
@ -1393,7 +1388,6 @@ static int idt_ntb_peer_mw_clear_trans(struct ntb_dev *ntb, int pidx,
idt_nt_write(ndev, IDT_NT_LUTLDATA, 0);
idt_nt_write(ndev, IDT_NT_LUTMDATA, 0);
idt_nt_write(ndev, IDT_NT_LUTUDATA, 0);
mmiowb();
spin_unlock_irqrestore(&ndev->lut_lock, irqflags);
}
@ -1812,7 +1806,6 @@ static int idt_ntb_peer_msg_write(struct ntb_dev *ntb, int pidx, int midx,
/* Set the route and send the data */
idt_sw_write(ndev, partdata_tbl[ndev->part].msgctl[midx], swpmsgctl);
idt_nt_write(ndev, ntdata_tbl.msgs[midx].out, msg);
mmiowb();
/* Unlock the messages routing table */
spin_unlock_irqrestore(&ndev->msg_locks[midx], irqflags);

3
drivers/ntb/test/ntb_perf.c
View File

@ -284,11 +284,9 @@ static int perf_spad_cmd_send(struct perf_peer *peer, enum perf_cmd cmd,
ntb_peer_spad_write(perf->ntb, peer->pidx,
PERF_SPAD_HDATA(perf->gidx),
upper_32_bits(data));
mmiowb();
ntb_peer_spad_write(perf->ntb, peer->pidx,
PERF_SPAD_CMD(perf->gidx),
cmd);
mmiowb();
ntb_peer_db_set(perf->ntb, PERF_SPAD_NOTIFY(peer->gidx));
dev_dbg(&perf->ntb->dev, "DB ring peer %#llx\n",
@ -379,7 +377,6 @@ static int perf_msg_cmd_send(struct perf_peer *peer, enum perf_cmd cmd,
ntb_peer_msg_write(perf->ntb, peer->pidx, PERF_MSG_HDATA,
upper_32_bits(data));
mmiowb();
/* This call shall trigger peer message event */
ntb_peer_msg_write(perf->ntb, peer->pidx, PERF_MSG_CMD, cmd);

3
drivers/scsi/bfa/bfa.h
View File

@ -62,8 +62,7 @@ void bfa_isr_unhandled(struct bfa_s *bfa, struct bfi_msg_s *m);
((__bfa)->iocfc.cfg.drvcfg.num_reqq_elems - 1); \
writel((__bfa)->iocfc.req_cq_pi[__reqq], \
(__bfa)->iocfc.bfa_regs.cpe_q_pi[__reqq]); \
mmiowb(); \
} while (0)
} while (0)
#define bfa_rspq_pi(__bfa, __rspq) \
(*(u32 *)((__bfa)->iocfc.rsp_cq_shadow_pi[__rspq].kva))

2
drivers/scsi/bfa/bfa_hw_cb.c
View File

@ -61,7 +61,6 @@ bfa_hwcb_rspq_ack_msix(struct bfa_s *bfa, int rspq, u32 ci)
bfa_rspq_ci(bfa, rspq) = ci;
writel(ci, bfa->iocfc.bfa_regs.rme_q_ci[rspq]);
mmiowb();
}
void
@ -72,7 +71,6 @@ bfa_hwcb_rspq_ack(struct bfa_s *bfa, int rspq, u32 ci)
bfa_rspq_ci(bfa, rspq) = ci;
writel(ci, bfa->iocfc.bfa_regs.rme_q_ci[rspq]);
mmiowb();
}
void

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