sound: fix check for error condition of register_chrdev()
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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/sound_core.c b/sound/sound_core.c
index 11e953a..99b73c6 100644
--- a/sound/sound_core.c
+++ b/sound/sound_core.c
@@ -655,7 +655,7 @@
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;
}