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authorPeter Senna Tschudin <peter.senna@gmail.com>2012-10-05 15:33:02 +0400
committerDavid S. Miller <davem@davemloft.net>2012-10-07 22:37:11 +0400
commit812b074b5ba2937d2edc0e5b0019fa163ba86882 (patch)
treec21c0d6bc20c5867ba0dcadaea680cb937e00423 /drivers/net/irda
parentcd9d11607ebe106acab6cf3ad578e72c956823a1 (diff)
downloadlinux-812b074b5ba2937d2edc0e5b0019fa163ba86882.tar.xz
drivers/net/irda/sh_irda.c: fix error return code
The function sh_irda_probe() return 0 for success and negative value for most of its internal tests failures. There is one exception that is error case going to err_mem_4:. For this error case, the function abort its success execution path, but returns non negative value, making it difficult for a caller function to notice the error. This patch fixes the error case that do not return negative value. This was found by Coccinelle, but the code change was made by hand. This patch is not robot generated. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // </smpl> Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/irda')
-rw-r--r--drivers/net/irda/sh_irda.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/irda/sh_irda.c b/drivers/net/irda/sh_irda.c
index eb315b8d07a3..4b746d9bd8e7 100644
--- a/drivers/net/irda/sh_irda.c
+++ b/drivers/net/irda/sh_irda.c
@@ -808,8 +808,8 @@ static int __devinit sh_irda_probe(struct platform_device *pdev)
goto err_mem_4;
platform_set_drvdata(pdev, ndev);
-
- if (request_irq(irq, sh_irda_irq, IRQF_DISABLED, "sh_irda", self)) {
+ err = request_irq(irq, sh_irda_irq, IRQF_DISABLED, "sh_irda", self);
+ if (err) {
dev_warn(&pdev->dev, "Unable to attach sh_irda interrupt\n");
goto err_mem_4;
}