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[PATCH] alpha: fix kernel panic during SysRq-b

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acquire_console_sem() does BUG() in interrupt context now, as in the case
of SysRq-b.

Cc: Richard Henderson <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Ivan Kokshaysky 2005-09-22 21:43:57 -07:00 • committed by Linus Torvalds
commit 4b3c86a745
1 changed files with 4 additions and 0 deletions
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4
arch/alpha/kernel/process.c
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@ -127,6 +127,10 @@ common_shutdown_1(void *generic_ptr)
/* If booted from SRM, reset some of the original environment. */
if (alpha_using_srm) {
#ifdef CONFIG_DUMMY_CONSOLE
/* If we've gotten here after SysRq-b, leave interrupt
context before taking over the console. */
if (in_interrupt())
irq_exit();
/* This has the effect of resetting the VGA video origin. */
take_over_console(&dummy_con, 0, MAX_NR_CONSOLES-1, 1);
#endif