Sergey Ryazanov 8bfae4f993 ath5k: fix spontaneus AR5312 freezes ... Sometimes while CPU have some load and ath5k doing the wireless interface reset the whole WiSoC completely freezes. Set of tests shows that using atomic delay function while we wait interface reset helps to avoid such freezes. The easiest way to reproduce this issue: create a station interface, start continous scan with wpa_supplicant and load CPU by something. Or just create multiple station interfaces and put them all in continous scan. This patch partially reverts the commit 1846ac3dbe ("ath5k: Use usleep_range where possible"), which replaces initial udelay() by usleep_range(). I do not know actual source of this issue, but all looks like that HW freeze is caused by transaction on internal SoC bus, while wireless block is in reset state. Also I should note that I do not know how many chips are affected, but I did not see this issue with chips, other than AR5312. CC: Jiri Slaby <jirislaby@gmail.com> CC: Nick Kossifidis <mickflemm@gmail.com> CC: Luis R. Rodriguez <mcgrof@do-not-panic.com> Fixes: 1846ac3dbe ("ath5k: Use usleep_range where possible") Reported-by: Christophe Prevotaux <c.prevotaux@rural-networks.com> Tested-by: Christophe Prevotaux <c.prevotaux@rural-networks.com> Tested-by: Eric Bree <ebree@nltinc.com> Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>		2015-02-06 08:42:32 +02:00
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ahb.c	ath5k: drop owner assignment from platform_drivers	2015-01-06 20:40:27 +02:00
ani.c
ani.h
ath5k.h	ath5k: update dependencies	2014-11-24 07:45:29 +01:00
attach.c	ath5k: remove redundant null check before kfree()	2014-08-28 14:41:57 -04:00
base.c	ath5k: update dependencies	2014-11-24 07:45:29 +01:00
base.h	ath5k: enable support for 5 MHz and 10 MHz channels	2013-08-16 14:17:50 -04:00
caps.c
debug.c	Merge tag 'master-2014-10-02' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next	2014-10-05 21:34:39 -04:00
debug.h
desc.c
desc.h
dma.c	ath5k: Reset Tx interrupt bits also on PISR	2013-12-11 10:56:22 -05:00
eeprom.c	ath5k: cleanup channel to eprom_mode function	2013-03-06 16:24:27 -05:00
eeprom.h	ath5k: cleanup channel to eprom_mode function	2013-03-06 16:24:27 -05:00
gpio.c
initvals.c
Kconfig	ath5k: update dependencies	2014-11-24 07:45:29 +01:00
led.c	ath5k: update dependencies	2014-11-24 07:45:29 +01:00
mac80211-ops.c	cfg80211: remove "channel" from survey names	2015-01-08 15:27:52 +01:00
Makefile	ath5k: revert AHB bus support removing	2014-11-24 07:45:28 +01:00
pci.c	PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use	2014-08-12 12:15:14 -06:00
pcu.c	ath5k: document a fall-through case in ath5k_hw_set_opmode	2015-01-23 21:17:26 +02:00
phy.c	ath5k: Fix AR5K_PHY_TXPOWER_RATE_MAX register value setting.	2014-04-30 12:13:07 -04:00
qcu.c	ath5k: fix hardware queue index assignment	2014-12-01 15:57:22 -05:00
reg.h
reset.c	ath5k: fix spontaneus AR5312 freezes	2015-02-06 08:42:32 +02:00
rfbuffer.h
rfgain.h
rfkill.c
sysfs.c
trace.h	ath5k: use more idiomatic tracing include style	2013-04-12 15:29:14 -04:00