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81e171b95d
linux/drivers
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Michael Buesch 81e171b95d [PATCH] bcm43xx: Fix low-traffic netdev watchdog TX timeouts 
This fixes a netdev watchdog timeout problem.
The software needs to call netif_tx_disable before running the
hardware calibration code. The problem condition can be shown by the
following timegraph.

|---5secs - ~10 jiffies time---|---|OOPS
^                              ^
last real TX                   periodic work stops netif

At OOPS, the following happens:
The watchdog timer triggers, because the timeout of 5secs
is over. The watchdog first checks for stopped TX.
_Usually_ TX is only stopped from the TX handler to indicate
a full TX queue. But this is different. We need to stop TX here,
regardless of the TX queue state. So the watchdog recognizes
the stopped device and assumes it is stopped due to full
TX queues (Which is a _wrong_ assumption in this case). It then
tests how far the last TX has been in the past. If it's more than
5secs (which is the case for low or no traffic), it will fire
a TX timeout.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2006-10-31 22:15:40 -05:00
..
acorn IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
acpi [PATCH] acpi memory hotplug: remove strange add_memory fail message 2006-10-20 10:26:38 -07:00
amba
ata [PATCH] libata-sff: Allow for wacky systems 2006-10-21 15:18:59 -04:00
atm [ATM] horizon: read_bia() needs to be __devinit 2006-10-24 16:16:39 -07:00
base [PATCH] move SYS_HYPERVISOR inside the Generic Driver menu 2006-10-28 11:30:55 -07:00
block [PATCH] cciss: fix printk format warning 2006-10-28 11:30:53 -07:00
bluetooth [PATCH] lockdep: annotate DECLARE_WAIT_QUEUE_HEAD 2006-10-30 12:08:40 -08:00
cdrom [PATCH] cdrom: add endianness annotations 2006-10-10 16:15:33 -07:00
char [WATCHDOG] sc1200wdt.c pnp unregister fix. 2006-10-29 22:09:32 +01:00
clocksource [PATCH] clocksource: acpi_pm: add another greylist chipset 2006-10-21 13:35:05 -07:00
connector
cpufreq [PATCH] cpufreq: make the transition_notifier chain use SRCU 2006-10-04 07:55:30 -07:00
crypto
dio
dma [PATCH] drivers/dma trivial annotations 2006-10-10 15:37:21 -07:00
edac
eisa [PATCH] EISA: handle sysfs errors 2006-10-11 11:14:25 -07:00
fc4 [SCSI] fc4: Conversion to struct scsi_cmnd in fc4 2006-10-25 15:12:45 -07:00
firmware [PATCH] i386: Disable nmi watchdog on all ThinkPads 2006-10-21 18:37:02 +02:00
hwmon hwmon: Fix debug messages in w83781d 2006-10-18 13:03:09 -07:00
i2c [ARM] Fix i2c-pxa slave mode support 2006-10-28 22:30:17 +01:00
ide [PATCH] drivers/ide/pci/generic.c: add missing newline to the all-generic-ide message 2006-10-30 12:08:41 -08:00
ieee1394 [ETH1394]: Fix unaligned accesses. 2006-10-30 15:24:38 -08:00
infiniband IB/mthca: Use mmiowb after doorbell ring 2006-10-16 20:22:35 -07:00
input sh: Cleanup board header directories. 2006-10-19 16:30:32 +09:00
isdn [PATCH] isdn/gigaset: avoid cs->dev null pointer dereference 2006-10-30 12:08:40 -08:00
leds [PATCH] drivers/led: handle sysfs errors 2006-10-17 08:18:46 -07:00
macintosh [POWERPC] Fix windfarm platform device usage 2006-10-10 13:56:13 +10:00
mca [PATCH] drivers/mca: handle sysfs errors 2006-10-11 11:14:25 -07:00
md [PATCH] Fix dmsetup table output change 2006-10-30 12:02:57 -08:00
media V4L/DVB (4750): AGC command1/2 is board specific 2006-10-14 00:44:29 -03:00
message [PATCH] lockdep: annotate DECLARE_WAIT_QUEUE_HEAD 2006-10-30 12:08:40 -08:00
mfd IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
misc [PATCH] ioc4: fix printk format warning 2006-10-28 11:30:53 -07:00
mmc [PATCH] missing includes of io.h 2006-10-24 22:01:11 -07:00
mtd [PATCH] silence 'make xmldocs' warning by adding missing description of 'raw' in nand_base.c:1485 2006-10-27 15:34:51 -07:00
net [PATCH] bcm43xx: Fix low-traffic netdev watchdog TX timeouts 2006-10-31 22:15:40 -05:00
nubus
oprofile
parisc Build fixes for struct pt_regs removal 2006-10-06 20:47:23 -06:00
parport [PATCH] sparc32 pt_regs fixes 2006-10-08 12:32:35 -07:00
pci PCI: Remove quirk_via_abnormal_poweroff 2006-10-27 11:20:33 -07:00
pcmcia Merge master.kernel.org:/home/rmk/linux-2.6-arm 2006-10-29 17:25:48 -08:00
pnp Fix DMA resource allocation in ACPIPnP 2006-10-18 11:36:11 -07:00
rapidio Fix several typos in drivers/ 2006-10-03 22:31:37 +02:00
rtc [PATCH] rtc: fix printk of 64-bit res on 32-bit platform 2006-10-17 08:18:47 -07:00
s390 [S390] cio: Make ccw_device_register() static. 2006-10-27 12:39:33 +02:00
sbus [SPARC]: Fix bus_id[] string overflow. 2006-10-27 01:03:31 -07:00
scsi [PATCH] SCSI: ISCSI build failure 2006-10-31 08:13:19 -08:00
serial [PATCH] ioc4_serial: irq flags fix 2006-10-30 12:08:40 -08:00
sh
sn [PATCH] ioc4: Enable build on non-SN2 2006-10-17 08:18:42 -07:00
spi Various drivers' irq handlers: kill dead code, needless casts 2006-10-06 15:00:58 -04:00
tc [MIPS] Fix DECserial build error by IRQ hander change 2006-10-08 02:38:28 +01:00
telephony [ixj] Add pci dev table for module auto loading. 2006-10-18 08:45:30 -04:00
usb [PATCH] lockdep: annotate DECLARE_WAIT_QUEUE_HEAD 2006-10-30 12:08:40 -08:00
video video: Fix include in hp680_bl. 2006-10-31 12:53:28 +09:00
w1 [PATCH] w1 kconfig fix 2006-10-17 08:18:44 -07:00
zorro
Kconfig [PATCH] ioc4: Enable build on non-SN2 2006-10-17 08:18:42 -07:00
Makefile