[tip:perf/urgent] irq_work: Drop cmpxchg() result
From: tip-bot for Sergio Aguirre
Date: Thu Nov 18 2010 - 09:10:34 EST
Commit-ID: 94e8ba728640dc01375a14e337f3b892bfacbeeb
Gitweb: http://git.kernel.org/tip/94e8ba728640dc01375a14e337f3b892bfacbeeb
Author: Sergio Aguirre <saaguirre@xxxxxx>
AuthorDate: Tue, 16 Nov 2010 12:02:47 -0600
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Thu, 18 Nov 2010 13:18:47 +0100
irq_work: Drop cmpxchg() result
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@xxxxxx>
Cc: Huang Ying <ying.huang@xxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Cc: Kyle McMartin <kyle@xxxxxxxxxxx>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
LKML-Reference: <1289930567-17828-1-git-send-email-saaguirre@xxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
kernel/irq_work.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index f16763f..90f8819 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -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);
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/