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Message-Id: <1289930567-17828-1-git-send-email-saaguirre@ti.com>
Date: Tue, 16 Nov 2010 12:02:47 -0600
From: Sergio Aguirre <saaguirre@...com>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Sergio Aguirre <saaguirre@...com>,
Huang Ying <ying.huang@...el.com>,
Martin Schwidefsky <schwidefsky@...ibm.com>,
Ingo Molnar <mingo@...e.hu>, Kyle McMartin <kyle@...artin.ca>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: [RFC][PATCH v2] irq_work: Drop cmpxchg result
This solves this compilation warning:
kernel/irq_work.c: In function 'irq_work_run':
kernel/irq_work.c:148: warning: value computed is not used
Signed-off-by: Sergio Aguirre <saaguirre@...com>
Cc: Huang Ying <ying.huang@...el.com>
Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Kyle McMartin <kyle@...artin.ca>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
---
Changelog:
v2 - Keep ignoring the cmpxchg return value, as pointed
out by Peter Zijlstra, and update patch subject/description
v1 - Initial version
(found here: https://patchwork.kernel.org/patch/328662/)
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);
--
1.7.0.4
--
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