David Daney 5b7526e3a6 irq/irq_domain: Quit ignoring error returns from irq_alloc_desc_from(). ... In commit 4bbdd45a (irq_domain/powerpc: eliminate irq_map; use irq_alloc_desc() instead) code was added that ignores error returns from irq_alloc_desc_from() by (silently) casting the return value to unsigned. The negitive value error return now suddenly looks like a valid irq number. Commits cc79ca69 (irq_domain: Move irq_domain code from powerpc to kernel/irq) and 1bc04f2c (irq_domain: Add support for base irq and hwirq in legacy mappings) move this code to its current location in irqdomain.c The result of all of this is a null pointer dereference OOPS if one of the error cases is hit. The fix: Don't cast away the negativeness of the return value and then check for errors. Signed-off-by: David Daney <david.daney@cavium.com> Acked-by: Rob Herring <rob.herring@calxeda.com> [grant.likely: dropped addition of new 'irq' variable] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>		2012-04-10 22:39:16 -06:00
..
autoprobe.c	genirq: Handle pending irqs in irq_startup()	2012-02-15 11:56:59 +01:00
chip.c	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-03-20 10:29:15 -07:00
debug.h
devres.c
dummychip.c
generic-chip.c	kernel: Fix files explicitly needing EXPORT_SYMBOL infrastructure	2011-10-31 19:30:05 -04:00
handle.c	genirq: Minor readablity improvement in irq_wake_thread()	2012-03-29 11:31:52 +02:00
internals.h	Merge branch 'linus' into irq/core	2012-03-13 16:35:16 +01:00
irqdesc.c	irq: don't put module.h into irq.h for tracking irqgen modules.	2011-10-31 19:32:35 -04:00
irqdomain.c	irq/irq_domain: Quit ignoring error returns from irq_alloc_desc_from().	2012-04-10 22:39:16 -06:00
Kconfig	Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm	2012-03-29 16:53:48 -07:00
Makefile
manage.c	genirq: Respect NUMA node affinity in setup_irq_irq affinity()	2012-03-29 11:31:53 +02:00
migration.c	genirq: Adjust irq thread affinity on IRQ_SET_MASK_OK_NOCOPY return value	2012-03-30 23:13:46 +02:00
pm.c	genirq: Add IRQF_RESUME_EARLY and resume such IRQs earlier	2011-10-17 11:42:49 +02:00
proc.c
resend.c
settings.h	genirq: Add support for per-cpu dev_id interrupts	2011-10-03 15:35:26 +02:00
spurious.c	module_param: make bool parameters really bool (core code)	2012-01-13 09:32:18 +10:30