From: Jesper Juhl <jj@chaosbits.net>
Date: Mon, 20 Dec 2010 23:03:17 +0000 (+0100)
Subject: ALSA: pcm: remember to always call va_end() on stuff that we va_start()
X-Git-Tag: Ubuntu-5.0.0-8.9~20812^2~1^2
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=87a1c8aaa0bced8acf4cd64672362492460c31ae;p=mirror_ubuntu-disco-kernel.git

ALSA: pcm: remember to always call va_end() on stuff that we va_start()

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>
---

diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index b75db8e9cc0f..11446a1506da 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -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);