From 71dc525c5d480397ac7343a0a2808f8a23705d42 Mon Sep 17 00:00:00 2001
From: Julien Brunel <brunel@diku.dk>
Date: Fri, 26 Sep 2008 15:23:46 +0200
Subject: [PATCH] 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>
---
sound/soc/at32/playpaq_wm8510.c | 6 +-----
1 file changed, 1 insertion(+), 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;
}
--
2.41.3