[PATCH 3/5] drivers/gpu: Correct NULL test

From: Julia Lawall
Date: Sun Dec 27 2009 - 16:27:42 EST


From: Julia Lawall <julia@xxxxxxx>

Test the just-allocated value for NULL rather than some other value.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,y;
statement S;
@@

x = \(kmalloc\|kcalloc\|kzalloc\)(...);
(
if ((x) == NULL) S
|
if (
- y
+ x
== NULL)
S
)
// </smpl>

Signed-off-by: Julia Lawall <julia@xxxxxxx>

---
drivers/gpu/drm/nouveau/nouveau_grctx.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_grctx.c b/drivers/gpu/drm/nouveau/nouveau_grctx.c
index 419f4c2..c7ebec6 100644
--- a/drivers/gpu/drm/nouveau/nouveau_grctx.c
+++ b/drivers/gpu/drm/nouveau/nouveau_grctx.c
@@ -97,8 +97,8 @@ nouveau_grctx_prog_load(struct drm_device *dev)
}

pgraph->ctxvals = kmalloc(fw->size, GFP_KERNEL);
- if (!pgraph->ctxprog) {
- NV_ERROR(dev, "OOM copying ctxprog\n");
+ if (!pgraph->ctxvals) {
+ NV_ERROR(dev, "OOM copying ctxvals\n");
release_firmware(fw);
nouveau_grctx_fini(dev);
return -ENOMEM;
--
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