linux/kernel/irq
Thomas Gleixner da5dd9e854 genirq/msi: Handle reactivation only on success
When analyzing the fallout of the x86 vector allocation rework it turned
out that the error handling in msi_domain_alloc_irqs() is broken.

If MSI_FLAG_MUST_REACTIVATE is set for a MSI domain then it clears the
activation flag for a successfully initialized msi descriptor. If a
subsequent initialization fails then the error handling code path does not
deactivate the interrupt because the activation flag got cleared.

Move the clearing of the activation flag outside of the initialization loop
so that an eventual failure can be cleaned up correctly.

Fixes: 22d0b12f35 ("genirq/irqdomain: Add force reactivation flag to irq domains")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Alexandru Chirvasitu <achirvasub@gmail.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Mikael Pettersson <mikpelinux@gmail.com>
Cc: Josh Poulson <jopoulso@microsoft.com>
Cc: Mihai Costache <v-micos@microsoft.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: linux-pci@vger.kernel.org
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Simon Xiao <sixiao@microsoft.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Jork Loeser <Jork.Loeser@microsoft.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: devel@linuxdriverproject.org
Cc: KY Srinivasan <kys@microsoft.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Sakari Ailus <sakari.ailus@intel.com>,
Cc: linux-media@vger.kernel.org
2017-12-29 21:13:04 +01:00
..
affinity.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
autoprobe.c Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:33:11 -08:00
chip.c Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:33:11 -08:00
cpuhotplug.c genirq/cpuhotplug: Add sanity check for effective affinity mask 2017-10-09 13:26:48 +02:00
debug.h genirq: Guard handle_bad_irq log messages 2017-12-28 12:28:29 +01:00
debugfs.c irqdomain/debugfs: Provide domain specific debug callback 2017-09-25 20:38:23 +02:00
devres.c irq/generic-chip: Provide devm_irq_setup_generic_chip() 2017-06-21 15:53:11 +02:00
dummychip.c Merge branch 'linus' into irq/core 2015-06-05 22:25:01 +02:00
generic-chip.c kernel/irq: Extend lockdep class for request mutex 2017-12-28 12:26:35 +01:00
handle.c There has been a fair amount of activity in the docs tree this time 2017-07-03 21:13:25 -07:00
internals.h Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:33:11 -08:00
ipi.c genirq/ipi: Fixup checks against nr_cpu_ids 2017-08-20 10:49:05 +02:00
irq_sim.c genirq/irq_sim: Add a devres variant of irq_sim_init() 2017-08-16 16:40:02 +02:00
irqdesc.c arm64 updates for 4.15 2017-11-15 10:56:56 -08:00
irqdomain.c irqdomain: Drop pointless NULL check in virq_debug_show_one 2017-11-12 23:25:40 +01:00
Kconfig genirq: Add config option for reservation mode 2017-10-18 15:38:30 +02:00
Makefile Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:33:11 -08:00
manage.c irqchip updates for 4.15, take #4 2017-11-14 11:23:05 +01:00
matrix.c genirq/matrix: Fix the precedence fix for real 2017-12-04 20:50:35 +01:00
migration.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
msi.c genirq/msi: Handle reactivation only on success 2017-12-29 21:13:04 +01:00
pm.c genirq/PM: Properly pretend disabled state when force resuming interrupts 2017-07-17 22:32:20 +02:00
proc.c Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:33:11 -08:00
resend.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
settings.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
spurious.c treewide: Switch DEFINE_TIMER callbacks to struct timer_list * 2017-11-21 15:57:05 -08:00
timings.c irq/timings: Use lockdep to assert IRQs are disabled/enabled 2017-11-08 11:13:52 +01:00