Re: [alsa-devel] Hung task with trace after resume on kernel v3.7-rc6

19 Nov 2012

...
...
Could you clear the patch and check whether power_save_controller=0
option also solves the issue?
If it works, the patch below should help.  Give it a try.
The patch below does help, the spurious responses do not show up
anymore.
Thank you very much for your help and your quick response, with best
regards,
Julian
...

From: Takashi Iwai tiwai@suse.de
Subject: [PATCH] ALSA: hda - Limit runtime PM support only to known
Intel chips
We've got a report that the runtime PM may make the codec the
unresponsive on AMD platforms.  Since the feature has been tested only
on the recent Intel platforms, it's safer to limit the support to such
devices for now.
This patch adds a new DCAPS bit flag indicating the runtime PM
support, and mark it for Intel controllers.
Reported-by: Julian Wollrath jwollrath@web.de
Signed-off-by: Takashi Iwai tiwai@suse.de
Tested-by: Julian Wollrath jwollrath@web.de
...

sound/pci/hda/hda_intel.c | 39
++++++++++++++++++++------------------- 1 file changed, 20
insertions(+), 19 deletions(-)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index cd2dbaf..f9d870e 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -556,6 +556,12 @@ enum {
 #define AZX_DCAPS_ALIGN_BUFSIZE	(1 << 22)	/* buffer
size alignment */ #define AZX_DCAPS_4K_BDLE_BOUNDARY (1 <<
23)	/* BDLE in 4k boundary */ #define
AZX_DCAPS_COUNT_LPIB_DELAY  (1 << 25)	/* Take LPIB as delay */
+#define AZX_DCAPS_PM_RUNTIME	(1 << 26)	/* runtime PM
support */ + +/* quirks for Intel PCH */
+#define AZX_DCAPS_INTEL_PCH \

(AZX_DCAPS_SCH_SNOOP | AZX_DCAPS_BUFSIZE | \
AZX_DCAPS_COUNT_LPIB_DELAY | AZX_DCAPS_PM_RUNTIME)




/* quirks for ATI SB / AMD Hudson */
 #define AZX_DCAPS_PRESET_ATI_SB \
@@ -2433,6 +2439,9 @@ static void azx_power_notify(struct hda_bus
*bus, bool power_up) {
   struct azx *chip = bus->private_data;

if (!(chip->driver_caps & AZX_DCAPS_PM_RUNTIME))
return;


if (power_up)
  pm_runtime_get_sync(&chip->pci->dev);
 else

@@ -2548,7 +2557,8 @@ 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)


if (!power_save_controller ||

   !(chip->driver_caps & AZX_DCAPS_PM_RUNTIME))

return -EAGAIN;
azx_stop_chip(chip);


@@ -3429,39 +3439,30 @@ static void __devexit azx_remove(struct
pci_dev *pci) static DEFINE_PCI_DEVICE_TABLE(azx_ids) = {
   /* CPT */
   { PCI_DEVICE(0x8086, 0x1c20),

 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |


 AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },




 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },

/* PBG */
 { PCI_DEVICE(0x8086, 0x1d20),


 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |


 AZX_DCAPS_BUFSIZE},




 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },

/* Panther Point */
 { PCI_DEVICE(0x8086, 0x1e20),


 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |


 AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },




 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },

/* Lynx Point */
 { PCI_DEVICE(0x8086, 0x8c20),


 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |


 AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },




 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },

/* Lynx Point-LP */
 { PCI_DEVICE(0x8086, 0x9c20),


 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |


 AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },




 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },

/* Lynx Point-LP */
 { PCI_DEVICE(0x8086, 0x9c21),


 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |


 AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },




 .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },

/* Haswell */
 { PCI_DEVICE(0x8086, 0x0c0c),


 .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |


 AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },




 .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH },

{ PCI_DEVICE(0x8086, 0x0d0c),


 .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |


 AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },




 .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH },

/* 5 Series/3400 */
 { PCI_DEVICE(0x8086, 0x3b56),


 .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |


 AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },




 .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH },

/* SCH */
 { PCI_DEVICE(0x8086, 0x811b),
   .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |


    