Messages in this thread Patch in this message |  | | Date | Sun, 21 Aug 2011 13:18:45 +0200 (CEST) | | From | Julia Lawall <> | | Subject | [PATCH] sound/soc/mxs/mxs-saif.c: add missing kfree |
| |
From: Julia Lawall <julia@diku.dk>
Move the test on pdev->id before the kzalloc to avoid requiring kfree when the test fails. This fix was suggested by Wolfram Sang.
A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/)
// <smpl> @@ identifier x; expression E1!=0,E2,E3,E4; statement S; iterator I; @@
( if (...) { ... when != kfree(x) when != x = E3 when != E3 = x * return ...; } ... when != x = E2 when != I(...,x,...) S if (...) { ... when != x = E4 kfree(x); ... return ...; } ) // </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
--- sound/soc/mxs/mxs-saif.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/sound/soc/mxs/mxs-saif.c b/sound/soc/mxs/mxs-saif.c index 0b3adae..ab453ca 100644 --- a/sound/soc/mxs/mxs-saif.c +++ b/sound/soc/mxs/mxs-saif.c @@ -519,12 +519,13 @@ static int mxs_saif_probe(struct platform_device *pdev) struct mxs_saif *saif; int ret = 0; + if (pdev->id >= ARRAY_SIZE(mxs_saif)) + return -EINVAL; + saif = kzalloc(sizeof(*saif), GFP_KERNEL); if (!saif) return -ENOMEM; - if (pdev->id >= ARRAY_SIZE(mxs_saif)) - return -EINVAL; mxs_saif[pdev->id] = saif; saif->clk = clk_get(&pdev->dev, NULL);
|  |