ALSA: jack: Fix endless loop at unique index detection
While the commit [d0a601c278de: ALSA: jack: Fix the id uniqueness
check] fixes the wrong string check, it leads to a worse result -- the
loop in get_available_index() goes into an endless loop. The cause is
that snd_ctl_find_id() returns the object assigned to the numid if
it's set. Thus it points to the previous entry again.
This patch clears the numid field for the next call properly.
Reported-and-tested-by: Tomáš Pružina <pruzinat@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/core/ctljack.c b/sound/core/ctljack.c
index 9149a4a..84a3cd6 100644
--- a/sound/core/ctljack.c
+++ b/sound/core/ctljack.c
@@ -41,8 +41,11 @@
sid.iface = SNDRV_CTL_ELEM_IFACE_CARD;
strlcpy(sid.name, name, sizeof(sid.name));
- while (snd_ctl_find_id(card, &sid))
+ while (snd_ctl_find_id(card, &sid)) {
sid.index++;
+ /* reset numid; otherwise snd_ctl_find_id() hits this again */
+ sid.numid = 0;
+ }
return sid.index;
}