From 9676001559fce06e37c7dc230ab275f605556176 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 26 May 2011 11:47:35 +0300 Subject: [PATCH 1/1] 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 Signed-off-by: Takashi Iwai --- sound/pci/fm801.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/sound/pci/fm801.c b/sound/pci/fm801.c index eacd4901a308..a7ec7030cf87 100644 --- a/sound/pci/fm801.c +++ b/sound/pci/fm801.c @@ -1234,9 +1234,12 @@ static int __devinit snd_fm801_create(struct snd_card *card, 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 @@ static int __devinit snd_fm801_create(struct snd_card *card, 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 -- 2.39.2