From a70d439345875d476ede258094356e2acd09b1a1 Mon Sep 17 00:00:00 2001 From: Jakub Bogusz Date: Tue, 21 Jun 2005 17:15:29 -0700 Subject: [PATCH] [PATCH] ppc32: don't recursively crash in die() on CHRP/PReP machines 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 Acked-by: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/ppc/kernel/traps.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/ppc/kernel/traps.c b/arch/ppc/kernel/traps.c index c65731e8bc6..2ca8ecfeefd 100644 --- a/arch/ppc/kernel/traps.c +++ b/arch/ppc/kernel/traps.c @@ -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 -- 2.20.1