ALSA: pcm: remember to always call va_end() on stuff that we va_start()
Jesper Juhl [Mon, 20 Dec 2010 23:03:17 +0000 (00:03 +0100)]
The Coverity checker spotted that we do not always remember to call
va_end() on 'args' in failure paths in snd_pcm_hw_rule_add().
Here's a patch to fix that up (compile tested only) - it also removes
some annoying trailing whitespace that caught my eye while I was in the
area..

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/pcm_lib.c

index b75db8e..11446a1 100644 (file)
@@ -1070,8 +1070,10 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond,
                struct snd_pcm_hw_rule *new;
                unsigned int new_rules = constrs->rules_all + 16;
                new = kcalloc(new_rules, sizeof(*c), GFP_KERNEL);
-               if (!new)
+               if (!new) {
+                       va_end(args);
                        return -ENOMEM;
+               }
                if (constrs->rules) {
                        memcpy(new, constrs->rules,
                               constrs->rules_num * sizeof(*c));
@@ -1087,8 +1089,10 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond,
        c->private = private;
        k = 0;
        while (1) {
-               if (snd_BUG_ON(k >= ARRAY_SIZE(c->deps)))
+               if (snd_BUG_ON(k >= ARRAY_SIZE(c->deps))) {
+                       va_end(args);
                        return -EINVAL;
+               }
                c->deps[k++] = dep;
                if (dep < 0)
                        break;
@@ -1097,7 +1101,7 @@ int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, unsigned int cond,
        constrs->rules_num++;
        va_end(args);
        return 0;
-}                                  
+}
 
 EXPORT_SYMBOL(snd_pcm_hw_rule_add);