linux-kernel - [PATCH v2] mISDN: Explicitly ignore unused return value of _hfcpci

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Date:	Thu,  4 Mar 2010 15:16:08 +1100
From:	"Ian Munsie" <imunsie@....ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	Dan Carpenter <error27@...il.com>, Ian Munsie <imunsie@....ibm.com>
Subject: [PATCH v2] mISDN: Explicitly ignore unused return value of _hfcpci_softirq

From: Ian Munsie <imunsie@...ibm.com>

The compiler throws the following warning during compilation:

drivers/isdn/hardware/mISDN/hfcpci.c:2319: warning: ignoring return value of 'driver_for_each_device', declared with attribute warn_unused_result

driver_for_each_device is being used to call _hfcpci_softirq for each
device, which will only ever return 0.
This patch explicitly ignores the return value to silence the warning.

Signed-off-by: Ian Munsie <imunsie@...ibm.com>
---

Changes since v1: Changed name of dummy variable to hold unused return value from 'err' to 'dummy' as per Dan Carpenter's feedback.

 drivers/isdn/hardware/mISDN/hfcpci.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/isdn/hardware/mISDN/hfcpci.c b/drivers/isdn/hardware/mISDN/hfcpci.c
index 70e6b0e..ae50e5a 100644
--- a/drivers/isdn/hardware/mISDN/hfcpci.c
+++ b/drivers/isdn/hardware/mISDN/hfcpci.c
@@ -2316,7 +2316,8 @@ _hfcpci_softirq(struct device *dev, void *arg)
 static void
 hfcpci_softirq(void *arg)
 {
-	(void) driver_for_each_device(&hfc_driver.driver, NULL, arg,
+	int dummy;
+	dummy = driver_for_each_device(&hfc_driver.driver, NULL, arg,
 					_hfcpci_softirq);
 
 	/* if next event would be in the past ... */
-- 
1.7.0

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