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Message-Id: <1341997118-25042-1-git-send-email-Julia.Lawall@lip6.fr>
Date: Wed, 11 Jul 2012 10:58:38 +0200
From: Julia Lawall <Julia.Lawall@...6.fr>
To: David Woodhouse <dwmw2@...radead.org>, Stefan Roese <sr@...x.de>
Cc: kernel-janitors@...r.kernel.org, linux-mtd@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] drivers/mtd/devices/spear_smi.c: failure test for null rather than negative integer
From: Julia Lawall <Julia.Lawall@...6.fr>
dev_get_platdata returns a pointer, so the failure value would be NULL
rather than a negative integer.
The semantic match that finds this problem is: (http://coccinelle.lip6.fr/)
// <smpl>
@@
expression x,e;
statement S1,S2;
@@
*x = dev_get_platdata(...)
... when != x = e
*if (x < 0) S1 else S2
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>
---
drivers/mtd/devices/spear_smi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/devices/spear_smi.c b/drivers/mtd/devices/spear_smi.c
index b85f183..7c10466 100644
--- a/drivers/mtd/devices/spear_smi.c
+++ b/drivers/mtd/devices/spear_smi.c
@@ -935,7 +935,7 @@ static int __devinit spear_smi_probe(struct platform_device *pdev)
}
} else {
pdata = dev_get_platdata(&pdev->dev);
- if (pdata < 0) {
+ if (!pdata) {
ret = -ENODEV;
dev_err(&pdev->dev, "no platform data\n");
goto err;
--
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