Commit a70d4393 authored Jun 21, 2005 by Jakub Bogusz Committed by Linus Torvalds Jun 21, 2005

[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 <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>

parent ba8c6d53

arch/ppc/kernel/traps.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -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
		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