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authorJulia Lawall <julia@diku.dk>2009-10-17 08:33:22 +0200
committerTakashi Iwai <tiwai@suse.de>2009-10-30 12:01:27 +0100
commit4b3be6afa4ab8b3fdce39df68bad71f8b85164de (patch)
tree9022bd2b563fabc987e31277782076db42946bb7 /sound/parisc
parentb71207e9dc044b30d8b5d7f1c2290ba14563f05c (diff)
ALSA: sound: Move dereference after NULL test and drop unnecessary NULL tests
In pcm.c, if the NULL test on pcm is needed, then the dereference should be after the NULL test. In dummy.c and ali5451.c, the context of the calls to snd_card_dummy_new_mixer and snd_ali_free_voice show that dummy and pvoice, respectively cannot be NULL. A simplified version of the semantic match that detects this problem is as follows (http://coccinelle.lip6.fr/): // <smpl> @match exists@ expression x, E; identifier fld; @@ * x->fld ... when != \(x = E\|&x\) * x == NULL // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/parisc')
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