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Jan Glauber 4f325184f2 [S390] qdio: prevent race for shared indicators 
If the shared indicator is used the following race leads to
an inbound stall:

Device                  CPU0                    CPU1
========================================================

non-shared DSCI =>1
ALSI => 1
                        Thin INT
                        ALSI => 0

                        non-shared DSCI
                        tasklets scheduled

shared DSCI => 1
ALSI => 1

                        shared DSCI => 0
                        ALSI ? -> set
                                                Thin INT
                                                ALSI => 0
                        ALSI was set,
                        shared DSCI => 1

After that no more interrupts occur because the DSCI is still set.
Fix that race by only resetting the shared DSCI if it was actually
set so the tasklets for all shared devices are scheduled and will
run after the interrupt.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
 		2011-01-05 12:47:28 +01:00
..
accessibility
…
acpi Merge branches 'bugzilla-25412' and 'bugzilla-25302' into release 2010-12-26 17:05:07 -05:00
amba
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ata pata_cs5536: avoid implicit MSR API inclusion on x86-64 2010-12-26 19:42:15 -05:00
atm drivers/atm/atmtcp.c: add missing atm_dev_put 2010-12-31 12:52:05 -08:00
auxdisplay
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base PM: Allow devices to be removed during late suspend and early resume 2010-11-11 01:50:53 +01:00
block Fix build error in drivers/block/cciss.c 2010-12-20 21:21:49 -08:00
bluetooth Bluetooth: add NULL pointer check in HCI 2010-12-08 13:22:22 -02:00
cdrom
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char RAMOOPS: Don't overflow over non-allocated regions 2010-12-28 11:12:32 -08:00
clocksource clocksource: sh_cmt: Remove nested spinlock fix 2010-12-17 19:38:33 +09:00
connector connector: add module alias 2010-12-10 12:27:49 -08:00
cpufreq
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cpuidle
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crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2010-11-13 09:55:56 -08:00
dca
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dio
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dma Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2011-01-03 11:48:54 -08:00
edac amd64_edac: Fix interleaving check 2010-12-08 19:52:54 +01:00
eisa
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firewire firewire: ohci: fix regression with Agere FW643 rev 06, disable MSI 2010-12-12 15:47:02 +01:00
firmware
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gpio cs5535-gpio: handle GPIO regs where higher (clear) bits are set 2010-12-23 15:31:48 -08:00
gpu drm/i915/dvo: Report LVDS attached to ch701x as connected 2010-12-30 13:50:43 +00:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2010-12-02 17:40:04 -08:00
hwmon hwmon: (s3c-hwmon) Fix compilation 2011-01-02 15:31:11 -08:00
i2c i2c_intel_mid: Fix slash in sysfs name 2010-12-14 18:46:01 -08:00
ide
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idle intel_idle: recognize ARAT on WSM-EX 2010-12-02 01:19:32 -05:00
ieee802154
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infiniband IB/uverbs: Handle large number of entries in poll CQ 2010-12-08 15:23:49 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2010-12-16 08:33:44 -08:00
isdn ISDN, Gigaset: Fix memory leak in do_disconnect_req() 2010-12-31 11:17:10 -08:00
leds led_class: fix typo in blink API 2010-12-22 19:43:34 -08:00
lguest
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macintosh leds: fix up dependencies 2010-12-02 14:51:15 -08:00
mca
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md Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2010-12-20 09:19:46 -08:00
media [media] em28xx: radio_fops should also use unlocked_ioctl 2011-01-03 09:52:25 -02:00
memstick
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message SCSI host lock push-down 2010-11-16 13:33:23 -08:00
mfd mfd: Support additional parent IDs for wm831x 2010-12-22 12:05:22 +01:00
misc drivers/misc/isl29020.c: remove incorrect kfree in isl29020_remove() 2010-11-25 06:50:47 +09:00
mmc mmc: Fix re-probing with PM_POST_RESTORE notification 2010-12-21 11:46:49 -08:00
mtd Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 2010-12-14 17:36:35 -08:00
net atl1: fix oops when changing tx/rx ring params 2011-01-03 11:04:49 -08:00
nubus
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of of/i2c: Fix request module by alias 2010-12-24 01:28:54 -07:00
oprofile Merge branches 'perf-fixes-for-linus' and 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-10-30 11:43:26 -07:00
parisc parisc: KittyHawk LCD fix 2010-12-04 11:18:25 -05:00
parport
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pci PCI hotplug: Fix unexpected driver unregister in pciehp_acpi.c 2010-12-23 12:51:49 -08:00
pcmcia ARM: 6456/1: Fix for building DEBUG with sa11xx_base.c as a module. 2010-12-04 12:47:48 +00:00
platform drm/i915, intel_ips: When i915 loads after IPS, make IPS relink to i915. 2010-12-23 09:51:36 +00:00
pnp ACPI/PNP: avoid section mismatch warning 2010-12-11 02:01:47 -05:00
power
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pps
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ps3
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rapidio rapidio: use resource_size() 2010-11-12 07:55:30 -08:00
regulator regulator: tps6586x: correct register table 2010-12-09 09:23:43 +00:00
rtc rtc: rs5c372: fix buffer size 2010-12-22 19:43:34 -08:00
s390 [S390] qdio: prevent race for shared indicators 2011-01-05 12:47:28 +01:00
sbus
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scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 2010-12-24 12:58:43 -08:00
serial Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb 2010-12-14 14:35:04 -08:00
sfi
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sh sh: intc: Initialize radix tree gfp mask explicitly. 2010-12-24 19:38:37 +09:00
sn
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spi spi/m68knommu: Coldfire QSPI platform support 2010-12-29 23:28:25 -07:00
ssb ssb: b43-pci-bridge: Add new vendor for BCM4318 2010-11-22 15:19:31 -05:00
staging Revert "Staging: zram: work around oops due to startup ordering snafu" 2010-12-30 12:07:22 -08:00
tc
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telephony
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thermal
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tty n_gsm: gsm_data_alloc buffer allocation could fail and it is not being checked 2010-12-16 13:03:13 -08:00
uio uio: Change mail address of Hans J. Koch 2010-11-10 16:57:11 -08:00
usb ueagle-atm: fix PHY signal initialization race 2010-12-28 13:41:41 -08:00
uwb UWB: Return UWB_RSV_ALLOC_NOT_FOUND rather than crashing on NULL dereference if kzalloc fails 2010-11-11 07:14:07 -08:00
vhost vhost: correctly set bits of dirty pages 2010-11-29 10:26:55 +02:00
video Merge branch 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6 2010-12-27 10:33:30 -08:00
virtio virtio: fix format of sysfs driver/vendor files 2010-11-24 15:21:12 +10:30
vlynq
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w1
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watchdog watchdog: Fix null pointer dereference while accessing rdc321x platform_data 2010-12-22 12:05:21 +01:00
xen Merge branch '2.6.37-rc4-pvhvm-fixes' of git://xenbits.xen.org/people/sstabellini/linux-pvhvm 2010-12-03 11:30:57 -08:00
zorro BKL: remove extraneous #include <smp_lock.h> 2010-11-17 08:59:32 -08:00
Kconfig
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Makefile TTY: create drivers/tty and move the tty core files there 2010-11-05 08:10:33 -07:00