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m68k: Fix off-by-one in m68k_setup_user_interrupt()

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commit 27123cbc26 upstream.

commit 69961c3752 ("[PATCH] m68k/Atari:
Interrupt updates") added a BUG_ON() with an incorrect upper bound
comparison, which causes an early crash on VME boards, where IRQ_USER is
8, cnt is 192 and NR_IRQS is 200.

Reported-by: Stephen N Chivers <schivers@csc.com.au>
Tested-by: Kars de Jong <jongk@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Geert Uytterhoeven 2008-11-14 08:10:19 +01:00 committed by Greg Kroah-Hartman
parent c56d539ed9
commit c71aa7304a
1 changed files with 1 additions and 1 deletions
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2
arch/m68k/kernel/ints.c
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@ -133,7 +133,7 @@ void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
{
int i;
BUG_ON(IRQ_USER + cnt >= NR_IRQS);
BUG_ON(IRQ_USER + cnt > NR_IRQS);
m68k_first_user_vec = vec;
for (i = 0; i < cnt; i++)
irq_controller[IRQ_USER + i] = &user_irq_controller;