From 9e507abd87103b5263bb0bbd94a15d74004557e9 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 8 Feb 2007 17:50:10 +0100 Subject: [PATCH] [ALSA] hda-codec - Fix Oops with probing sigmatel codec chips When a device is unkown, the driver tries to set up the codec based on the BIOS information. Then it may result in Oops if BIOS is broken. The patch fixes the issue, falling back to a reference model in such a case. Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- sound/pci/hda/patch_sigmatel.c | 40 ++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c index 6f4a39273b98..2535c1ad39e9 100644 --- a/sound/pci/hda/patch_sigmatel.c +++ b/sound/pci/hda/patch_sigmatel.c @@ -1800,6 +1800,7 @@ static int patch_stac925x(struct hda_codec *codec) spec->board_config = snd_hda_check_board_config(codec, STAC_925x_MODELS, stac925x_models, stac925x_cfg_tbl); + again: if (spec->board_config < 0) { snd_printdd(KERN_INFO "hda_codec: Unknown model for STAC925x, using BIOS defaults\n"); err = stac92xx_save_bios_config_regs(codec); @@ -1825,6 +1826,15 @@ static int patch_stac925x(struct hda_codec *codec) spec->mixer = stac925x_mixer; err = stac92xx_parse_auto_config(codec, 0x8, 0x7); + if (!err) { + if (spec->board_config < 0) { + printk(KERN_WARNING "hda_codec: No auto-config is " + "available, default to model=ref\n"); + spec->board_config = STAC_925x_REF; + goto again; + } + err = -EINVAL; + } if (err < 0) { stac92xx_free(codec); return err; @@ -1850,6 +1860,7 @@ static int patch_stac922x(struct hda_codec *codec) spec->board_config = snd_hda_check_board_config(codec, STAC_922X_MODELS, stac922x_models, stac922x_cfg_tbl); + again: if (spec->board_config < 0) { snd_printdd(KERN_INFO "hda_codec: Unknown model for STAC922x, " "using BIOS defaults\n"); @@ -1875,6 +1886,15 @@ static int patch_stac922x(struct hda_codec *codec) spec->multiout.dac_nids = spec->dac_nids; err = stac92xx_parse_auto_config(codec, 0x08, 0x09); + if (!err) { + if (spec->board_config < 0) { + printk(KERN_WARNING "hda_codec: No auto-config is " + "available, default to model=ref\n"); + spec->board_config = STAC_D945_REF; + goto again; + } + err = -EINVAL; + } if (err < 0) { stac92xx_free(codec); return err; @@ -1903,6 +1923,7 @@ static int patch_stac927x(struct hda_codec *codec) spec->board_config = snd_hda_check_board_config(codec, STAC_927X_MODELS, stac927x_models, stac927x_cfg_tbl); + again: if (spec->board_config < 0) { snd_printdd(KERN_INFO "hda_codec: Unknown model for STAC927x, using BIOS defaults\n"); err = stac92xx_save_bios_config_regs(codec); @@ -1945,6 +1966,15 @@ static int patch_stac927x(struct hda_codec *codec) spec->multiout.dac_nids = spec->dac_nids; err = stac92xx_parse_auto_config(codec, 0x1e, 0x20); + if (!err) { + if (spec->board_config < 0) { + printk(KERN_WARNING "hda_codec: No auto-config is " + "available, default to model=ref\n"); + spec->board_config = STAC_D965_REF; + goto again; + } + err = -EINVAL; + } if (err < 0) { stac92xx_free(codec); return err; @@ -1970,6 +2000,7 @@ static int patch_stac9205(struct hda_codec *codec) spec->board_config = snd_hda_check_board_config(codec, STAC_9205_MODELS, stac9205_models, stac9205_cfg_tbl); + again: if (spec->board_config < 0) { snd_printdd(KERN_INFO "hda_codec: Unknown model for STAC9205, using BIOS defaults\n"); err = stac92xx_save_bios_config_regs(codec); @@ -2008,6 +2039,15 @@ static int patch_stac9205(struct hda_codec *codec) AC_VERB_SET_GPIO_MASK, 0x00000001); err = stac92xx_parse_auto_config(codec, 0x1f, 0x20); + if (!err) { + if (spec->board_config < 0) { + printk(KERN_WARNING "hda_codec: No auto-config is " + "available, default to model=ref\n"); + spec->board_config = STAC_9205_REF; + goto again; + } + err = -EINVAL; + } if (err < 0) { stac92xx_free(codec); return err; -- 2.20.1