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authorIvan Kokshaysky <ink@jurassic.park.msu.ru>2009-01-15 13:51:17 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-15 16:39:40 -0800
commit70b66cbfd3316b792a855cb9a2574e85f1a63d0f (patch)
tree10fef9a200c0d104bc7afd4e8b14092e4a12a232
parent46666d8ac42893f90edde7e57a11bc8749d7e89c (diff)
alpha: nautilus - fix compile failure with gcc-4.3
init_srm_irq() deals with irq's #16 and above, but size of irq_desc array on nautilus and some other system types is 16. So gcc-4.3 complains that "array subscript is above array bounds", even though this function is never called on those systems. This adds a check for NR_IRQS <= 16, which effectively optimizes init_srm_irq() code away on problematic platforms. Thanks to Daniel Drake <dsd@gentoo.org> for detailed analysis of the problem. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/alpha/kernel/irq_srm.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/alpha/kernel/irq_srm.c b/arch/alpha/kernel/irq_srm.c
index 32212014fbe..a03fbca4940 100644
--- a/arch/alpha/kernel/irq_srm.c
+++ b/arch/alpha/kernel/irq_srm.c
@@ -63,6 +63,8 @@ init_srm_irqs(long max, unsigned long ignore_mask)
{
long i;
+ if (NR_IRQS <= 16)
+ return;
for (i = 16; i < max; ++i) {
if (i < 64 && ((ignore_mask >> i) & 1))
continue;