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| author | Mengdong Lin <mengdong.lin@intel.com> | 2012-08-24 04:06:30 (GMT) |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-08-24 05:22:42 (GMT) |
| commit | 5d6147f10113c240845ea9e8e4e744bbadce5bcb (patch) | |
| tree | 9b30d7abcbb1f641e2c0525711fc56564b0788ad /sound/pci | |
| parent | b8dfc4624162c0547d7f36a9df48da2d9b4bd58a (diff) | |
| download | linux-5d6147f10113c240845ea9e8e4e744bbadce5bcb.tar.xz | |
ALSA: hda - bug fix on references without checking CONFIG_SND_HDA_POWER_SAVE
The patch to support runtime PM introduced a bug:
Module parameter 'power_save_controller', and the codec flag 'd3_stop_clk'
'd3_stop_clk_ok' are defined only when HDA power save is enabled in config. But
there are references to them without checking macro CONFIG_SND_HDA_POWER_SAVE.
This patch is to fix the bug.
Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
| -rw-r--r-- | sound/pci/hda/hda_codec.c | 6 | ||||
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 0de1f76..4a2f35c 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -1320,11 +1320,13 @@ int /*__devinit*/ snd_hda_codec_new(struct hda_bus *bus, AC_VERB_GET_SUBSYSTEM_ID, 0); } +#ifdef CONFIG_SND_HDA_POWER_SAVE codec->d3_stop_clk = snd_hda_codec_get_supported_ps(codec, codec->afg ? codec->afg : codec->mfg, AC_PWRST_CLKSTOP); if (!codec->d3_stop_clk) bus->power_keep_link_on = 1; +#endif /* power-up all before initialization */ hda_set_power_state(codec, @@ -3544,7 +3546,9 @@ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg, int count; unsigned int state; +#ifdef CONFIG_SND_HDA_POWER_SAVE codec->d3_stop_clk_ok = 0; +#endif if (codec->patch_ops.set_power_state) { codec->patch_ops.set_power_state(codec, fg, power_state); @@ -3569,9 +3573,11 @@ static void hda_set_power_state(struct hda_codec *codec, hda_nid_t fg, break; } +#ifdef CONFIG_SND_HDA_POWER_SAVE if ((power_state == AC_PWRST_D3) && codec->d3_stop_clk && (state & AC_PWRST_CLK_STOP_OK)) codec->d3_stop_clk_ok = 1; +#endif } #ifdef CONFIG_SND_HDA_HWDEP diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 726f420..1c9c779 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2528,8 +2528,10 @@ static int azx_runtime_suspend(struct device *dev) struct snd_card *card = dev_get_drvdata(dev); struct azx *chip = card->private_data; +#ifdef CONFIG_SND_HDA_POWER_SAVE if (!power_save_controller) return -EAGAIN; +#endif azx_stop_chip(chip); azx_clear_irq_pending(chip); |