From 6eb827d23577a4efec2b10a9c4cc9ded268a1d1c Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 12 Dec 2012 11:50:12 +0100 Subject: [PATCH] ALSA: hda - Move runtime PM check to runtime_idle callback The runtime_idle callback is the right place to check the suspend capability, but currently we do it wrongly in the runtime_suspend callback. This leads to a kernel error message like: pci_pm_runtime_suspend(): azx_runtime_suspend+0x0/0x50 [snd_hda_intel] returns -11 and the runtime PM core would even repeat the attempts. Reported-and-tested-by: Borislav Petkov Cc: [v3.7] Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_intel.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 1da8a5c..0f3d3db 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2691,10 +2691,6 @@ static int azx_runtime_suspend(struct device *dev) struct snd_card *card = dev_get_drvdata(dev); struct azx *chip = card->private_data; - if (!power_save_controller || - !(chip->driver_caps & AZX_DCAPS_PM_RUNTIME)) - return -EAGAIN; - azx_stop_chip(chip); azx_clear_irq_pending(chip); return 0; @@ -2709,12 +2705,25 @@ static int azx_runtime_resume(struct device *dev) azx_init_chip(chip, 1); return 0; } + +static int azx_runtime_idle(struct device *dev) +{ + struct snd_card *card = dev_get_drvdata(dev); + struct azx *chip = card->private_data; + + if (!power_save_controller || + !(chip->driver_caps & AZX_DCAPS_PM_RUNTIME)) + return -EBUSY; + + return 0; +} + #endif /* CONFIG_PM_RUNTIME */ #ifdef CONFIG_PM static const struct dev_pm_ops azx_pm = { SET_SYSTEM_SLEEP_PM_OPS(azx_suspend, azx_resume) - SET_RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, NULL) + SET_RUNTIME_PM_OPS(azx_runtime_suspend, azx_runtime_resume, azx_runtime_idle) }; #define AZX_PM_OPS &azx_pm -- 2.7.4