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linux-2.6
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David S. Miller 49d85c502e [NET]: Fix interrupt semaphore corruption in Intel drivers. 
Several of the Intel ethernet drivers keep an atomic counter used to
manage when to actually hit the hardware with a disable or an enable.

The way the net_rx_work() breakout logic works during a pending
napi_disable() is that it simply unschedules the poll even if it
still has work.

This can potentially leave interrupts disabled, but that is OK
because all of the drivers are about to disable interrupts
anyways in all such code paths that do a napi_disable().

Unfortunately, this trips up the semaphore used here in the Intel
drivers.  If you hit this case, when you try to bring the interface
back up it won't enable interrupts.  A reload of the driver module
fixes it of course.

So what we do is make sure all the sequences now go:

	napi_disable();
	atomic_set(&adapter->irq_sem, 0);
	*_irq_disable();

which makes sure the counter is always in the correct state.

Reported by Robert Olsson.

Signed-off-by: David S. Miller <davem@davemloft.net>
 		2008-01-20 20:31:39 -08:00
..
acorn/char
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acpi Pull bugzilla-9683 into release branch 2008-01-11 12:28:38 -05:00
amba
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ata pata_pdc202xx_old: Fix crashes with ATAPI 2008-01-19 21:29:39 -08:00
atm [ATM]: [nicstar] delay irq setup until card is configured 2008-01-08 23:30:01 -08:00
auxdisplay
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base create /sys/.../power when CONFIG_PM is set 2007-11-28 13:53:53 -08:00
block cciss: section mismatch 2008-01-14 08:52:22 -08:00
bluetooth [BLUETOOTH]: Always send explicit hci_ll wake-up acks. 2008-01-10 22:24:43 -08:00
cdrom SG: audit of drivers that use blk_rq_map_sg() 2007-10-24 13:21:21 +02:00
char TPM: fix suspend and resume failure 2008-01-14 08:52:22 -08:00
clocksource
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connector [CONNECTOR]: Don't touch queue dev after decrement of ref count. 2008-01-08 23:44:44 -08:00
cpufreq cpufreq: Initialise default governor before use 2008-01-17 15:38:58 -08:00
cpuidle cpuidle: remove unused exports 2007-10-29 17:27:50 -04:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2008-01-10 16:09:34 -08:00
dca
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dio
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dma I/OAT: fix null device in call to dev_err() 2007-12-17 19:28:17 -08:00
edac i5000_edac: no need to __stringify() KBUILD_BASENAME 2007-11-14 18:45:41 -08:00
eisa
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firewire firewire: OHCI 1.0 Isochronous Receive support 2007-12-10 21:55:19 +01:00
firmware dmi-id: fix for __you_cannot_kmalloc_that_much failure 2008-01-08 16:10:36 -08:00
hid HID: Don't access input_dev->private directly 2007-10-31 13:30:35 +01:00
hwmon hwmon: (w83627ehf) Be more careful when changing VID input level 2008-01-03 07:33:31 -05:00
i2c i2c-sibyte: Fix an error path 2008-01-14 21:53:31 +01:00
ide IDE: terminate ACPI DMI list 2008-01-11 11:42:07 -08:00
ieee1394 ieee1394: iso and async streams: s/g list fix 2007-11-04 14:31:16 +01:00
infiniband IB/ipath: Fix receiving UD messages with immediate data 2008-01-16 14:42:35 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2008-01-17 15:50:19 -08:00
isdn [ISDN]: i4l: Fix DLE handling for i4l-audio 2008-01-04 03:55:44 -08:00
kvm KVM: SVM: Fix FPU leak while emulating clts 2007-11-27 15:38:18 +02:00
leds leds: Fix locomo LED driver oops 2007-12-31 23:11:11 +00:00
lguest Remove bogus duplicate CONFIG_LGUEST_GUEST entry. 2008-01-19 21:29:39 -08:00
macintosh macintosh: fix fabrication of caplock key events 2008-01-14 08:52:22 -08:00
mca
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md md: fix data corruption when a degraded raid5 array is reshaped 2008-01-08 16:10:35 -08:00
media fix wrong sized spinlock flags argument 2008-01-17 15:42:30 -08:00
message i2o: debug messages corrected 2007-11-05 15:12:31 -08:00
mfd MFD: SM501 debug typo fix 2007-11-29 09:24:53 -08:00
misc ACPI: thinkpad-acpi: fix lenovo keymap for brightness 2007-12-13 21:59:59 -05:00
mmc sdhci: support JMicron JMB38x chips 2007-12-12 20:01:00 +01:00
mtd cache invalidation error for buffered write 2008-01-11 11:44:37 -08:00
net [NET]: Fix interrupt semaphore corruption in Intel drivers. 2008-01-20 20:31:39 -08:00
nubus
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of
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oprofile oProfile: oops when profile_pc() returns ~0LU 2007-11-14 18:45:37 -08:00
parisc [PARISC] lba_pci: pci_claim_resources disabled expansion roms 2007-12-06 09:38:26 -08:00
parport parport: "dev->timeslice" is an unsigned long, not an int 2007-12-17 19:28:15 -08:00
pci ACPI: apply quirk_ich6_lpc_acpi to more ICH8 and ICH9 2008-01-11 00:24:55 -05:00
pcmcia pcmcia: remove pxa2xx_lubbock build warning 2007-12-23 12:54:37 -08:00
pnp pnpacpi: print resource shortage message only once (more) 2008-01-17 15:38:58 -08:00
power Merge git://git.infradead.org/battery-2.6 2007-10-22 19:20:52 -07:00
ps3 ps3: vuart: fix error path locking 2007-12-23 12:54:37 -08:00
rapidio
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rtc rtc-at32ap700x: fix irq init oops 2007-12-17 19:28:15 -08:00
s390 [S390]: Fix use of skb after netif_rx 2007-12-11 02:45:29 -08:00
sbus [WATCHDOG] Sbus: cpwatchdog, remove SPIN_LOCK_UNLOCKED 2007-11-19 21:09:52 +00:00
scsi advansys: fix section mismatch warning 2008-01-14 08:52:23 -08:00
serial [SERIAL]: Fix section mismatches in Sun serial console drivers. 2007-12-29 01:19:49 -08:00
sh superhyway: Handle device_register() retval properly. 2007-11-07 11:13:55 +09:00
sn
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spi spi_bitbang: always grab lock with irqs blocked 2008-01-08 16:10:35 -08:00
ssb ssb: Fix probing of PCI cores if PCI and PCIE core is available 2008-01-08 23:30:10 -08:00
tc
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telephony telephony: phonedev panics if unregistering device not registered [Bug 9266] 2007-11-05 15:12:33 -08:00
uio
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usb pl2303: Fix mode switching regression 2008-01-08 16:16:34 -08:00
video fix radeonfb regression with Xpress 200m 5955 2008-01-17 15:38:59 -08:00
virtio virtio: fix module/device unloading 2007-11-19 11:20:42 +11:00
w1 w1: decrement slave counter only in ->release() callback 2008-01-14 08:52:22 -08:00
watchdog [WATCHDOG] Revert "Stop looking for device as soon as one is found" 2008-01-18 21:01:34 +00:00
xen
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zorro Amiga zorro bus: Add missing zorro_device_remove() 2007-11-26 19:15:31 -08:00
Kconfig Virtio interface 2007-10-23 15:49:54 +10:00
Makefile Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-10-23 16:37:29 -07:00