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| author | Ivan Kokshaysky <ink@jurassic.park.msu.ru> | 2009-01-15 22:51:17 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-16 01:39:40 +0100 |
| commit | 70b66cbfd3316b792a855cb9a2574e85f1a63d0f (patch) | |
| tree | 10fef9a200c0d104bc7afd4e8b14092e4a12a232 /arch/alpha | |
| parent | revert "mm: vmalloc use mutex for purge" (diff) | |
| download | linux-70b66cbfd3316b792a855cb9a2574e85f1a63d0f.tar.xz linux-70b66cbfd3316b792a855cb9a2574e85f1a63d0f.zip | |
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>
Diffstat (limited to 'arch/alpha')
| -rw-r--r-- | arch/alpha/kernel/irq_srm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/alpha/kernel/irq_srm.c b/arch/alpha/kernel/irq_srm.c index 32212014fbe9..a03fbca4940e 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; |