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authorJulien Brunel <brunel@diku.dk>2008-09-26 15:23:46 +0200
committerJaroslav Kysela <perex@perex.cz>2008-10-10 13:41:40 +0200
commit71dc525c5d480397ac7343a0a2808f8a23705d42 (patch)
tree10395716d38a5a742d7071b4efc8f18819e9e464 /sound
parent9a9e2359f484402c620f9a3748037fea65fa5af4 (diff)
ALSA: sound/soc/at32: Useless NULL test
The test (ssc != NULL) can only be reached if the call to the function ssc_request, the result of which ssc is assigned, succeeds. Moreover, two statements assign NULL to ssc just before a return, which is useless since it is a local variable. So, we suggest to delete the test and the two assignments. A simplified version of the semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @bad_null_test@ expression x,E; @@ x = ssc_request(...) ... when != x = E * x != NULL // </smpl> Signed-off-by: Julien Brunel <brunel@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/at32/playpaq_wm8510.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/sound/soc/at32/playpaq_wm8510.c b/sound/soc/at32/playpaq_wm8510.c
index 7e6560ba751..98a2d5826a8 100644
--- a/sound/soc/at32/playpaq_wm8510.c
+++ b/sound/soc/at32/playpaq_wm8510.c
@@ -406,7 +406,6 @@ static int __init playpaq_asoc_init(void)
ssc = ssc_request(0);
if (IS_ERR(ssc)) {
ret = PTR_ERR(ssc);
- ssc = NULL;
goto err_ssc;
}
ssc_p->ssc = ssc;
@@ -477,10 +476,7 @@ err_pll0:
_gclk0 = NULL;
}
err_gclk0:
- if (ssc != NULL) {
- ssc_free(ssc);
- ssc = NULL;
- }
+ ssc_free(ssc);
err_ssc:
return ret;
}