ALSA: hda - Fix Oops at reloading beep devices
The recent change for supporting dynamic beep device allocation caused
a problem resulting in Oops at reloading the driver. Also, it ignores
the error from input device registration.
This patch fixes the wrong check in snd_hda_detach_beep_device(), and
returns an error when the input device registration fails properly.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_beep.c b/sound/pci/hda/hda_beep.c
index ca3c57a..e4581a42 100644
--- a/sound/pci/hda/hda_beep.c
+++ b/sound/pci/hda/hda_beep.c
@@ -239,8 +239,12 @@
mutex_init(&beep->mutex);
if (beep->mode == HDA_BEEP_MODE_ON) {
- beep->enabled = 1;
- snd_hda_do_register(&beep->register_work);
+ int err = snd_hda_do_attach(beep);
+ if (err < 0) {
+ kfree(beep);
+ codec->beep = NULL;
+ return err;
+ }
}
return 0;
@@ -253,7 +257,7 @@
if (beep) {
cancel_work_sync(&beep->register_work);
cancel_delayed_work(&beep->unregister_work);
- if (beep->enabled)
+ if (beep->dev)
snd_hda_do_detach(beep);
codec->beep = NULL;
kfree(beep);
