ALSA: fm801: add error handling if auto-detect fails
In the original code if auto detect failed and tea575x_tuner == 4
then we copy bogus information to chip->tea.card. I've changed the
autodetect code to cleanup and return -ENODEV on error instead.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/fm801.c b/sound/pci/fm801.c
index eacd490..a7ec703 100644
--- a/sound/pci/fm801.c
+++ b/sound/pci/fm801.c
@@ -1234,9 +1234,12 @@
sprintf(chip->tea.bus_info, "PCI:%s", pci_name(pci));
if ((tea575x_tuner & TUNER_TYPE_MASK) > 0 &&
(tea575x_tuner & TUNER_TYPE_MASK) < 4) {
- if (snd_tea575x_init(&chip->tea))
+ if (snd_tea575x_init(&chip->tea)) {
snd_printk(KERN_ERR "TEA575x radio not found\n");
- } else if ((tea575x_tuner & TUNER_TYPE_MASK) == 0)
+ snd_fm801_free(chip);
+ return -ENODEV;
+ }
+ } else if ((tea575x_tuner & TUNER_TYPE_MASK) == 0) {
/* autodetect tuner connection */
for (tea575x_tuner = 1; tea575x_tuner <= 3; tea575x_tuner++) {
chip->tea575x_tuner = tea575x_tuner;
@@ -1246,6 +1249,12 @@
break;
}
}
+ if (tea575x_tuner == 4) {
+ snd_printk(KERN_ERR "TEA575x radio not found\n");
+ snd_fm801_free(chip);
+ return -ENODEV;
+ }
+ }
strlcpy(chip->tea.card, snd_fm801_tea575x_gpios[(tea575x_tuner & TUNER_TYPE_MASK) - 1].name, sizeof(chip->tea.card));
#endif