[alsa-devel] [PATCH] sound: fix check for error condition of register_chrdev()

6 Nov 2015

init_oss_soundcore() compares returned value of register_chrdev()
with -1, while other error codes can be returned.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov khoroshilov@ispras.ru
---
 sound/sound_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/sound_core.c b/sound/sound_core.c
index 11e953a1fa45..99b73c675743 100644
--- a/sound/sound_core.c
+++ b/sound/sound_core.c
@@ -655,7 +655,7 @@ static void cleanup_oss_soundcore(void)
 static int __init init_oss_soundcore(void)
 {
    if (preclaim_oss &&
-	    register_chrdev(SOUND_MAJOR, "sound", &soundcore_fops) == -1) {
+	    register_chrdev(SOUND_MAJOR, "sound", &soundcore_fops) < 0) {
    	printk(KERN_ERR "soundcore: sound device already in use.\n");
    	return -EBUSY;
    }
-- 
1.9.1


    

Alexey Khoroshilov

Takashi Iwai

tags (0)

participants (2)