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ALSA: hda - bug fix on references without checking CONFIG_SND_HDA_POWER_SAVE

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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>
This commit is contained in:
Mengdong Lin 2012-08-24 12:06:30 +08:00 committed by Takashi Iwai
parent b8dfc46241
commit 5d6147f101
2 changed files with 8 additions and 0 deletions
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6
sound/pci/hda/hda_codec.c
View file

@ -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

2
sound/pci/hda/hda_intel.c
View file

@ -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);