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[PATCH] ppc32: don't recursively crash in die() on CHRP/PReP machines

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This patch avoids recursive crash (leading to kernel stack overflow) in
die() on CHRP/PReP machines when CONFIG_PMAC_BACKLIGHT=y.  set_backlight_*
functions are placed in pmac section, which is discarded when _machine !=
_MACH_Pmac.

Signed-off-by: Jakub Bogusz <qboosh@pld-linux.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jakub Bogusz 2005-06-21 17:15:29 -07:00 committed by Linus Torvalds
parent ba8c6d534a
commit a70d439345
1 changed files with 4 additions and 2 deletions
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6
arch/ppc/kernel/traps.c
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@ -81,8 +81,10 @@ void die(const char * str, struct pt_regs * fp, long err)
console_verbose();
spin_lock_irq(&die_lock);
#ifdef CONFIG_PMAC_BACKLIGHT
set_backlight_enable(1);
set_backlight_level(BACKLIGHT_MAX);
if (_machine == _MACH_Pmac) {
set_backlight_enable(1);
set_backlight_level(BACKLIGHT_MAX);
}
#endif
printk("Oops: %s, sig: %ld [#%d]\n", str, err, ++die_counter);
#ifdef CONFIG_PREEMPT