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irq_work: Drop cmpxchg() result

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The compiler warned us about:

 kernel/irq_work.c: In function 'irq_work_run':
 kernel/irq_work.c:148: warning: value computed is not used

Dropping the cmpxchg() result is indeed weird, but correct -
so annotate away the warning.

Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1289930567-17828-1-git-send-email-saaguirre@ti.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Sergio Aguirre 2010-11-16 12:02:47 -06:00 • committed by Ingo Molnar
parent 8882135bcd
commit 94e8ba7286
1 changed files with 3 additions and 1 deletions
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4
kernel/irq_work.c
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@ -145,7 +145,9 @@ void irq_work_run(void)
* Clear the BUSY bit and return to the free state if
* no-one else claimed it meanwhile.
*/
cmpxchg(&entry->next, next_flags(NULL, IRQ_WORK_BUSY), NULL);
(void)cmpxchg(&entry->next,
next_flags(NULL, IRQ_WORK_BUSY),
NULL);
}
}
EXPORT_SYMBOL_GPL(irq_work_run);