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author | Julia Lawall <julia@diku.dk> | 2010-08-31 17:48:56 +0200 |
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committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-09-02 16:28:49 +0100 |
commit | 880b8ffd45bf46f783b8b0d009487d89fd37b608 (patch) | |
tree | 225085f161842344c3152838db6cbd28af035334 /sound/soc/fsl/p1022_ds.c | |
parent | 3ba31051f1bbdad3c6b597903f7a2ee3b00e001e (diff) | |
download | linux-880b8ffd45bf46f783b8b0d009487d89fd37b608.tar.gz |
ASoC: pl022_ds.c: Add of_node_put to avoid memory leak
Add a call to of_node_put in the error handling code following a call to of_parse_phandle. This patch also moves the existing call to of_node_put tothe end of the error handling code, to make it possible to jump to of_node_put without doing the other cleanup operations. These appear to be disjoint operations, so the ordering doesn't matter. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ local idexpression x; expression E,E1,E2; statement S; @@ *x = (of_find_node_by_path |of_find_node_by_name |of_find_node_by_phandle |of_get_parent |of_get_next_parent |of_get_next_child |of_find_compatible_node |of_match_node |of_find_node_by_type |of_find_node_with_property |of_find_matching_node |of_parse_phandle )(...); ... if (x == NULL) S <... when != x = E *if (...) { ... when != of_node_put(x) when != if (...) { ... of_node_put(x); ... } ( return <+...x...+>; | * return ...; ) } ...> ( E2 = x; | of_node_put(x); ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Timur Tabi <timur@freescale.com> Acked-by: Liam Girdwood <lrg@slimlogic.uo.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/fsl/p1022_ds.c')
-rw-r--r-- | sound/soc/fsl/p1022_ds.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c index f8176e8e1adf..63b9eaa1ebc2 100644 --- a/sound/soc/fsl/p1022_ds.c +++ b/sound/soc/fsl/p1022_ds.c @@ -346,8 +346,10 @@ static int p1022_ds_probe(struct platform_device *pdev) } mdata = kzalloc(sizeof(struct machine_data), GFP_KERNEL); - if (!mdata) - return -ENOMEM; + if (!mdata) { + ret = -ENOMEM; + goto error_put; + } mdata->dai[0].cpu_dai_name = dev_name(&ssi_pdev->dev); mdata->dai[0].ops = &p1022_ds_ops; @@ -502,13 +504,12 @@ static int p1022_ds_probe(struct platform_device *pdev) return 0; error: - of_node_put(codec_np); - if (sound_device) platform_device_unregister(sound_device); kfree(mdata); - +error_put: + of_node_put(codec_np); return ret; } |