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| author |   Tony Lindgren <tony@atomide.com> | 2012-09-04 17:22:45 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2012-09-04 17:22:45 -0700 |
| commit | e534e871a94ba2e3bfdf0edd3685eb805fc960d8 (patch) | |
| tree | ddbfab0d7354bf6d26c78120bf2864f585f7fa49 /arch/arm/mach-omap2 | |
| parent | Linux 3.6-rc4 (diff) | |
| download | linux-dev-e534e871a94ba2e3bfdf0edd3685eb805fc960d8.tar.xz linux-dev-e534e871a94ba2e3bfdf0edd3685eb805fc960d8.zip | |
ARM: OMAP4: Fix array size for irq_target_cpu
If NR_IRQS is less than MAX_IRQS, we end up writing past the
irq_target_cpu array in omap_wakeupgen_init():
/* Associate all the IRQs to boot CPU like GIC init does. */
for (i = 0; i < max_irqs; i++)
irq_target_cpu[i] = boot_cpu;
This can happen if SPARSE_IRQ is enabled as by default NR_IRQS is
set to 16. Without this patch we're overwriting other data during
the boot.
Looks like a similar fix was posted by Benoit Cousson earlier
as "ARM: OMAP2+: wakeupgen: Fix wrong array size for irq_target_cpu"
but was lost.
Cc: stable@vger.kernel.org
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/omap-wakeupgen.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c index 05fdebfaa195..330d4c6e746b 100644 --- a/arch/arm/mach-omap2/omap-wakeupgen.c +++ b/arch/arm/mach-omap2/omap-wakeupgen.c @@ -46,7 +46,7 @@ static void __iomem *wakeupgen_base; static void __iomem *sar_base; static DEFINE_SPINLOCK(wakeupgen_lock); -static unsigned int irq_target_cpu[NR_IRQS]; +static unsigned int irq_target_cpu[MAX_IRQS]; static unsigned int irq_banks = MAX_NR_REG_BANKS; static unsigned int max_irqs = MAX_IRQS; static unsigned int omap_secure_apis; |