From: Julia Lawall <julia@diku.dk>
Date: Mon, 24 Jan 2011 19:55:22 +0000 (+0100)
Subject: OMAP: PM: SmartReflex: Add missing IS_ERR test
X-Git-Tag: v2.6.38-rc4~4^2~6^2~4
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=28693ec01d0229b9e2a2ebe38ef8faa5e151b440;p=~shefty%2Frdma-dev.git

OMAP: PM: SmartReflex: Add missing IS_ERR test

Function _sr_lookup, defined in the same file, returns ERR_PTR not NULL in
an error case.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
identifier f;
@@
f(...) { ... return ERR_PTR(...); }

@@
identifier r.f, fld;
expression x;
statement S1,S2;
@@
 x = f(...)
 ... when != IS_ERR(x)
(
 if (IS_ERR(x) ||...) S1 else S2
|
*x->fld
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Kevin Hilman <khilman@ti.com>
---

diff --git a/arch/arm/mach-omap2/smartreflex.c b/arch/arm/mach-omap2/smartreflex.c
index 77ecebf3fae..d7deadfaddb 100644
--- a/arch/arm/mach-omap2/smartreflex.c
+++ b/arch/arm/mach-omap2/smartreflex.c
@@ -966,7 +966,7 @@ static int __devexit omap_sr_remove(struct platform_device *pdev)
 	}
 
 	sr_info = _sr_lookup(pdata->voltdm);
-	if (!sr_info) {
+	if (IS_ERR(sr_info)) {
 		dev_warn(&pdev->dev, "%s: omap_sr struct not found\n",
 			__func__);
 		return -EINVAL;