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[MIPS] time: Make c0_compare_int_usable more bullet proof

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Use write_c0_compare(read_c0_count()) to clear interrupt.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Atsushi Nemoto 2007-10-23 01:14:06 +09:00 committed by Ralf Baechle
parent 17f690be45
commit dab969c00b
1 changed files with 2 additions and 2 deletions
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4
arch/mips/kernel/cevt-r4k.c
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@ -186,7 +186,7 @@ static int c0_compare_int_usable(void)
* IP7 already pending? Try to clear it by acking the timer.
*/
if (c0_compare_int_pending()) {
write_c0_compare(read_c0_compare());
write_c0_compare(read_c0_count());
irq_disable_hazard();
if (c0_compare_int_pending())
return 0;
@ -202,7 +202,7 @@ static int c0_compare_int_usable(void)
if (!c0_compare_int_pending())
return 0;
write_c0_compare(read_c0_compare());
write_c0_compare(read_c0_count());
irq_disable_hazard();
if (c0_compare_int_pending())
return 0;