From 71dc525c5d480397ac7343a0a2808f8a23705d42 Mon Sep 17 00:00:00 2001 From: Julien Brunel 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/) // @bad_null_test@ expression x,E; @@ x = ssc_request(...) ... when != x = E * x != NULL // Signed-off-by: Julien Brunel Signed-off-by: Julia Lawall Acked-by: Mark Brown Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- 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 7e6560ba7510..98a2d5826a85 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; } -- 2.20.1