diff options
| author | Ivan Kokshaysky <ink@jurassic.park.msu.ru> | 2009-01-15 13:51:17 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-02-02 08:28:08 -0800 |
| commit | 1de15f4a49afd35f51a32c691413d26569cb7e1f (patch) | |
| tree | af39d567fe34ee2874e16fd6b468130e069af4fb /arch/alpha | |
| parent | 8ca2918f99b5861359de1805f27b08023c82abd2 (diff) | |
alpha: nautilus - fix compile failure with gcc-4.3
commit 70b66cbfd3316b792a855cb9a2574e85f1a63d0f upstream.
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>
Cc: Tobias Klausmann <klausman@schwarzvogel.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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; |