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6ff53fd371
linux/drivers/net/ethernet
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Alexander Kochetkov 6ff53fd371 net/smsc911x: Fix delays in the PHY enable/disable routines 
Increased delay in the smsc911x_phy_disable_energy_detect (from 1ms to 2ms).
Dropped delays in the smsc911x_phy_enable_energy_detect (100ms and 1ms).

The patch affect SMSC LAN generation 4 chips with integrated PHY (LAN9221).

I saw problems with soft reset due to wrong udelay timings.
After I fixed udelay, I measured the time needed to bring integrated PHY
from power-down to operational mode (the time beetween clearing EDPWRDOWN
bit and soft reset complete event). I got 1ms (measured using ktime_get).
The value is equal to the current value (1ms) used in the
smsc911x_phy_disable_energy_detect. It is near the upper bound and in order
to avoid rare soft reset faults it is doubled (2ms).

I don't know official timing for bringing up integrated PHY as specs doesn't
clarify this (or may be I didn't found).

It looks safe to drop delays before and after setting EDPWRDOWN bit
(enable PHY power-down mode). I didn't saw any regressions with the patch.

The patch was reviewed by Steve Glendinning and Microchip Team.

Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
Acked-by: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-13 14:37:53 -05:00
..
3com Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-10-08 16:22:22 -04:00
8390 PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
adaptec PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
adi net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
aeroflex greth: moved TX ring cleaning to NAPI rx poll func 2014-09-05 21:57:09 -07:00
agere et131x: Add PCIe gigabit ethernet driver et131x to drivers/net 2014-10-03 12:22:19 -07:00
allwinner net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
alteon PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
altera Altera TSE: Add support for no PHY 2014-10-05 21:39:40 -04:00
amd amd-xgbe: Fix napi Rx budget accounting 2014-10-22 17:50:31 -04:00
apm drivers: net: xgene: fix: Use separate resources 2014-11-04 17:08:42 -05:00
apple
arc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-09-23 12:09:27 -04:00
atheros PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
broadcom net: bcmgenet: apply MII configuration in bcmgenet_open() 2014-11-11 18:23:23 -05:00
brocade bna: fix skb->truesize underestimation 2014-10-17 23:56:33 -04:00
cadence net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
calxeda net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
chelsio cxgb4 : dcb open-lldp interop fixes 2014-11-12 15:00:07 -05:00
cirrus cirrus: cs89x0: Use managed interfaces 2014-08-02 16:40:52 -07:00
cisco enic: update desc properly in rx_copybreak 2014-11-06 16:42:04 -05:00
davicom net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
dec tulip: dmfe: Fix global namespace pollution of phy accessors. 2014-08-27 18:25:40 -07:00
dlink PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
emulex be2net: fix alignment on line wrap 2014-09-22 15:01:09 -04:00
faraday
freescale net: fec: fix regression on i.MX28 introduced by rx_copybreak support 2014-11-07 12:08:58 -05:00
fujitsu drivers/net: ethernet: Remove typedef for struct and enum 2014-08-07 16:02:58 -07:00
hisilicon net: hisilicon: add hix5hd2 mac driver 2014-06-02 23:39:05 -07:00
hp hp100: Convert the normal skb free path to dev_consume_skb_any() 2014-09-08 15:39:58 -07:00
i825xx
ibm ehea: Fix TSO and hw checksums with non-accelerated vlan packets. 2014-08-25 17:27:09 -07:00
icplus PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
intel ixgbe: phy: fix uninitialized status in ixgbe_setup_phy_link_tnx 2014-11-11 16:31:54 -05:00
marvell net: mv643xx_eth: reclaim TX skbs only when released by the HW 2014-11-06 14:54:39 -05:00
mellanox net/mlx4_en: Advertize encapsulation offloads features only when VXLAN tunnel is set 2014-11-11 13:24:45 -05:00
micrel net: ks8842: use dmaengine_terminate_all() API 2014-10-15 21:31:00 +05:30
microchip
moxa net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
myricom PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
natsemi PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
neterion net: ethernet: neterion: vxge: vxge-main.c: Cleaning up missing null-terminate in conjunction with strncpy 2014-09-15 14:17:00 -04:00
nuvoton net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
nvidia ethernet: nvidia: Remove extra parens 2014-09-02 13:47:25 -07:00
nxp net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
octeon drivers: net: ethernet: octeon_mgmt: fix a compiler warning 2014-09-08 14:23:46 -07:00
oki-semi pch_gbe: 'select' NET_PTP_CLASSIFY. 2014-09-22 13:25:51 -04:00
packetengines drivers/net: Convert remaining uses of pr_warning to pr_warn 2014-09-09 20:37:08 -07:00
pasemi PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
qlogic netxen: Fix link event handling. 2014-11-06 16:43:29 -05:00
qualcomm net: qualcomm: Fix dependency 2014-11-11 18:12:32 -05:00
rdc PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
realtek r8169:add support for RTL8168EP 2014-10-08 15:58:45 -04:00
renesas net: sh_eth: fix driver dependencies 2014-09-02 13:23:25 -07:00
samsung net: sxgbe: remove duplicate SXGBE_CORE_L34_ADDCTL_REG define 2014-06-11 15:01:30 -07:00
seeq
sfc sfc: don't BUG_ON efx->max_channels == 0 in probe 2014-11-03 15:57:50 -05:00
sgi PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
silan PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
sis PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
smsc net/smsc911x: Fix delays in the PHY enable/disable routines 2014-11-13 14:37:53 -05:00
stmicro stmmac: fix atomicity in pm routines 2014-11-05 16:22:57 -05:00
sun sunhme: Add DMA mapping error checks. 2014-11-01 00:23:46 -04:00
tehuti PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
ti net: ptp: fix time stamp matching logic for VLAN packets. 2014-11-12 15:06:17 -05:00
tile Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2014-10-15 07:48:18 +02:00
toshiba net: spider_net: avoid using signed char for bitops 2014-10-05 21:15:16 -04:00
tundra
via Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-10-07 21:16:26 -04:00
wiznet net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
xilinx drivers: net: ethernet: xilinx: xilinx_emaclite: revert the original commit "1db3ddff1602edf2390b7667dcbaa0f71512e3ea" 2014-11-05 16:00:51 -05:00
xircom ethernet: amd: Remove typedef local_info_t 2014-08-11 12:19:53 -07:00
xscale
dnet.c net: dnet: Use managed interfaces 2014-08-02 16:40:52 -07:00
dnet.h
ec_bhf.c net: ec_bhf: remove excessive debug messages 2014-08-24 18:36:57 -07:00
ethoc.c net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
fealnx.c PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
jme.c PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
jme.h
Kconfig et131x: Add PCIe gigabit ethernet driver et131x to drivers/net 2014-10-03 12:22:19 -07:00
korina.c
lantiq_etop.c net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
Makefile et131x: Add PCIe gigabit ethernet driver et131x to drivers/net 2014-10-03 12:22:19 -07:00
netx-eth.c net: ethernet: Remove superfluous ether_setup after alloc_etherdev 2014-10-03 15:31:40 -07:00
s6gmac.c