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cxlflash: Correct spelling, grammar, and alignment mistakes

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There are several spelling and grammar mistakes throughout the
driver. Additionally there are a handful of places where there
are extra lines and unnecessary variables/statements. These are
a nuisance and pollute the driver.

Fix spelling and grammar issues. Update some comments for clarity and
consistency. Remove extra lines and a few unneeded variables/statements.

Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
This commit is contained in:
Matthew R. Ochs
2015-10-21 15:15:06 -05:00
committed by James Bottomley
parent 8e78262328
commit f15fbf8d4e
5 changed files with 38 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

62
drivers/scsi/cxlflash/main.c
View File

@@ -34,7 +34,6 @@ MODULE_AUTHOR("Manoj N. Kumar <manoj@linux.vnet.ibm.com>");
MODULE_AUTHOR("Matthew R. Ochs <mrochs@linux.vnet.ibm.com>");
MODULE_LICENSE("GPL");
/**
* cmd_checkout() - checks out an AFU command
* @afu: AFU to checkout from.
@@ -730,7 +729,7 @@ static void cxlflash_remove(struct pci_dev *pdev)
case INIT_STATE_SCSI:
cxlflash_term_local_luns(cfg);
scsi_remove_host(cfg->host);
/* Fall through */
/* fall through */
case INIT_STATE_AFU:
term_afu(cfg);
cancel_work_sync(&cfg->work_q);
@@ -763,9 +762,7 @@ static int alloc_mem(struct cxlflash_cfg *cfg)
char *buf = NULL;
struct device *dev = &cfg->dev->dev;
/* This allocation is about 12K, i.e. only 1 64k page
* and upto 4 4k pages
*/
/* AFU is ~12k, i.e. only one 64k page or up to four 4k pages */
cfg->afu = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
get_order(sizeof(struct afu)));
if (unlikely(!cfg->afu)) {
@@ -1295,10 +1292,10 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
goto out;
}
/* it is OK to clear AFU status before FC_ERROR */
/* FYI, it is 'okay' to clear AFU status before FC_ERROR */
writeq_be(reg_unmasked, &global->regs.aintr_clear);
/* check each bit that is on */
/* Check each bit that is on */
for (i = 0; reg_unmasked; i++, reg_unmasked = (reg_unmasked >> 1)) {
info = find_ainfo(1ULL << i);
if (((reg_unmasked & 0x1) == 0) || !info)
@@ -1311,7 +1308,7 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
readq_be(&global->fc_regs[port][FC_STATUS / 8]));
/*
* do link reset first, some OTHER errors will set FC_ERROR
* Do link reset first, some OTHER errors will set FC_ERROR
* again if cleared before or w/o a reset
*/
if (info->action & LINK_RESET) {
@@ -1326,7 +1323,7 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
reg = readq_be(&global->fc_regs[port][FC_ERROR / 8]);
/*
* since all errors are unmasked, FC_ERROR and FC_ERRCAP
* Since all errors are unmasked, FC_ERROR and FC_ERRCAP
* should be the same and tracing one is sufficient.
*/
@@ -1472,23 +1469,22 @@ static void init_pcr(struct cxlflash_cfg *cfg)
for (i = 0; i < MAX_CONTEXT; i++) {
ctrl_map = &afu->afu_map->ctrls[i].ctrl;
/* disrupt any clients that could be running */
/* e. g. clients that survived a master restart */
/* Disrupt any clients that could be running */
/* e.g. clients that survived a master restart */
writeq_be(0, &ctrl_map->rht_start);
writeq_be(0, &ctrl_map->rht_cnt_id);
writeq_be(0, &ctrl_map->ctx_cap);
}
/* copy frequently used fields into afu */
/* Copy frequently used fields into afu */
afu->ctx_hndl = (u16) cxl_process_element(cfg->mcctx);
/* ctx_hndl is 16 bits in CAIA */
afu->host_map = &afu->afu_map->hosts[afu->ctx_hndl].host;
afu->ctrl_map = &afu->afu_map->ctrls[afu->ctx_hndl].ctrl;
/* Program the Endian Control for the master context */
writeq_be(SISL_ENDIAN_CTRL, &afu->host_map->endian_ctrl);
/* initialize cmd fields that never change */
/* Initialize cmd fields that never change */
for (i = 0; i < CXLFLASH_NUM_CMDS; i++) {
afu->cmd[i].rcb.ctx_id = afu->ctx_hndl;
afu->cmd[i].rcb.msi = SISL_MSI_RRQ_UPDATED;
@@ -1517,7 +1513,7 @@ static int init_global(struct cxlflash_cfg *cfg)
pr_debug("%s: wwpn0=0x%llX wwpn1=0x%llX\n", __func__, wwpn[0], wwpn[1]);
/* set up RRQ in AFU for master issued cmds */
/* Set up RRQ in AFU for master issued cmds */
writeq_be((u64) afu->hrrq_start, &afu->host_map->rrq_start);
writeq_be((u64) afu->hrrq_end, &afu->host_map->rrq_end);
@@ -1530,9 +1526,9 @@ static int init_global(struct cxlflash_cfg *cfg)
/* checker on if dual afu */
writeq_be(reg, &afu->afu_map->global.regs.afu_config);
/* global port select: select either port */
/* Global port select: select either port */
if (afu->internal_lun) {
/* only use port 0 */
/* Only use port 0 */
writeq_be(PORT0, &afu->afu_map->global.regs.afu_port_sel);
num_ports = NUM_FC_PORTS - 1;
} else {
@@ -1541,15 +1537,15 @@ static int init_global(struct cxlflash_cfg *cfg)
}
for (i = 0; i < num_ports; i++) {
/* unmask all errors (but they are still masked at AFU) */
/* Unmask all errors (but they are still masked at AFU) */
writeq_be(0, &afu->afu_map->global.fc_regs[i][FC_ERRMSK / 8]);
/* clear CRC error cnt & set a threshold */
/* Clear CRC error cnt & set a threshold */
(void)readq_be(&afu->afu_map->global.
fc_regs[i][FC_CNT_CRCERR / 8]);
writeq_be(MC_CRC_THRESH, &afu->afu_map->global.fc_regs[i]
[FC_CRC_THRESH / 8]);
/* set WWPNs. If already programmed, wwpn[i] is 0 */
/* Set WWPNs. If already programmed, wwpn[i] is 0 */
if (wwpn[i] != 0 &&
afu_set_wwpn(afu, i,
&afu->afu_map->global.fc_regs[i][0],
@@ -1563,18 +1559,17 @@ static int init_global(struct cxlflash_cfg *cfg)
* offline/online transitions and a PLOGI
*/
msleep(100);
}
/* set up master's own CTX_CAP to allow real mode, host translation */
/* tbls, afu cmds and read/write GSCSI cmds. */
/* Set up master's own CTX_CAP to allow real mode, host translation */
/* tables, afu cmds and read/write GSCSI cmds. */
/* First, unlock ctx_cap write by reading mbox */
(void)readq_be(&afu->ctrl_map->mbox_r); /* unlock ctx_cap */
writeq_be((SISL_CTX_CAP_REAL_MODE | SISL_CTX_CAP_HOST_XLATE |
SISL_CTX_CAP_READ_CMD | SISL_CTX_CAP_WRITE_CMD |
SISL_CTX_CAP_AFU_CMD | SISL_CTX_CAP_GSCSI_CMD),
&afu->ctrl_map->ctx_cap);
/* init heartbeat */
/* Initialize heartbeat */
afu->hb = readq_be(&afu->afu_map->global.regs.afu_hb);
out:
@@ -1603,7 +1598,7 @@ static int start_afu(struct cxlflash_cfg *cfg)
init_pcr(cfg);
/* initialize RRQ pointers */
/* Initialize RRQ pointers */
afu->hrrq_start = &afu->rrq_entry[0];
afu->hrrq_end = &afu->rrq_entry[NUM_RRQ_ENTRY - 1];
afu->hrrq_curr = afu->hrrq_start;
@@ -1726,8 +1721,7 @@ static int init_afu(struct cxlflash_cfg *cfg)
goto err1;
}
/* Map the entire MMIO space of the AFU.
*/
/* Map the entire MMIO space of the AFU */
afu->afu_map = cxl_psa_map(cfg->mcctx);
if (!afu->afu_map) {
rc = -ENOMEM;
@@ -1779,7 +1773,7 @@ err1:
* @mode: Type of sync to issue (lightweight, heavyweight, global).
*
* The AFU can only take 1 sync command at a time. This routine enforces this
* limitation by using a mutex to provide exlusive access to the AFU during
* limitation by using a mutex to provide exclusive access to the AFU during
* the sync. This design point requires calling threads to not be on interrupt
* context due to the possibility of sleeping during concurrent sync operations.
*
@@ -1845,7 +1839,7 @@ retry:
wait_resp(afu, cmd);
/* set on timeout */
/* Set on timeout */
if (unlikely((cmd->sa.ioasc != 0) ||
(cmd->sa.host_use_b[0] & B_ERROR)))
rc = -1;
@@ -2262,7 +2256,7 @@ static struct scsi_host_template driver_template = {
.cmd_per_lun = 16,
.can_queue = CXLFLASH_MAX_CMDS,
.this_id = -1,
.sg_tablesize = SG_NONE, /* No scatter gather support. */
.sg_tablesize = SG_NONE, /* No scatter gather support */
.max_sectors = CXLFLASH_MAX_SECTORS,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = cxlflash_host_attrs,
@@ -2322,8 +2316,7 @@ static void cxlflash_worker_thread(struct work_struct *work)
/* The reset can block... */
afu_link_reset(afu, port,
&afu->afu_map->
global.fc_regs[port][0]);
&afu->afu_map->global.fc_regs[port][0]);
spin_lock_irqsave(cfg->host->host_lock, lock_flags);
}
@@ -2402,7 +2395,6 @@ static int cxlflash_probe(struct pci_dev *pdev,
cfg->last_lun_index[1] = CXLFLASH_NUM_VLUNS/2 - 1;
cfg->dev_id = (struct pci_device_id *)dev_id;
cfg->mcctx = NULL;
init_waitqueue_head(&cfg->tmf_waitq);
init_waitqueue_head(&cfg->reset_waitq);
@@ -2418,7 +2410,8 @@ static int cxlflash_probe(struct pci_dev *pdev,
pci_set_drvdata(pdev, cfg);
/* Use the special service provided to look up the physical
/*
* Use the special service provided to look up the physical
* PCI device, since we are called on the probe of the virtual
* PCI host bus (vphb)
*/
@@ -2448,7 +2441,6 @@ static int cxlflash_probe(struct pci_dev *pdev,
}
cfg->init_state = INIT_STATE_AFU;
rc = init_scsi(cfg);
if (rc) {
dev_err(&pdev->dev, "%s: call to init_scsi "