diff mbox

can: c_can: Fix return value check in c_can_plat_probe()

Message ID 1407977939-15287-1-git-send-email-weiyj_lk@163.com
State Awaiting Upstream, archived
Delegated to: David Miller
Headers show

Commit Message

weiyj_lk@163.com Aug. 14, 2014, 12:58 a.m. UTC 
From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

In case of error, the function devm_ioremap() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
---
 drivers/net/can/c_can/c_can_platform.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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Comments

Marc Kleine-Budde Aug. 14, 2014, 10:11 a.m. UTC | #1 
On 08/14/2014 02:58 AM, weiyj_lk@163.com wrote:
> From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
> 
> In case of error, the function devm_ioremap() returns NULL pointer
> not ERR_PTR(). The IS_ERR() test in the return value check should
> be replaced with NULL test.
> 
> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

Dan Carpenter already provided this fix. It will be included in my next
pull request to David's net.

Thanks,
Marc
diff mbox

Patch

diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c
index 5dede6e..109cb44 100644
--- a/drivers/net/can/c_can/c_can_platform.c
+++ b/drivers/net/can/c_can/c_can_platform.c
@@ -280,7 +280,7 @@  static int c_can_plat_probe(struct platform_device *pdev)
 
 		priv->raminit_ctrlreg = devm_ioremap(&pdev->dev, res->start,
 						     resource_size(res));
-		if (IS_ERR(priv->raminit_ctrlreg) || priv->instance < 0)
+		if (!priv->raminit_ctrlreg || priv->instance < 0)
 			dev_info(&pdev->dev, "control memory is not used for raminit\n");
 		else
 			priv->raminit = c_can_hw_raminit_ti;