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[ARM] call undefined instruction exception handler with irqs enabled

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Aaro says:
> With spinlock debugs enabled I get might_sleep() warnings when using
> ptrace.

tracked down to a missing enable_irq before calling do_undefinstr().

Reported-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Tested-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2009-01-27 23:20:00 +00:00 committed by Russell King
parent 9ce8bb55e3
commit ecbab71c52
1 changed files with 1 additions and 0 deletions
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arch/arm/kernel/entry-armv.S
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@ -650,6 +650,7 @@ ENTRY(fp_enter)
no_fp: mov pc, lr
__und_usr_unknown:
enable_irq
mov r0, sp
adr lr, ret_from_exception
b do_undefinstr