BockW 4th sound doesn't work on latest linus/master

BockW 4th sound doesn't work on latest linus/master

[Kuninori Morimoto]

Hi Simon, Mark

I noticed that bockw 4th sound device doesn't work on
latest linus/master.

My git bisect said the trigger is this patch

e14ee5deab24200e4b70fe31a8c806f0acd3d37c
(ARM: shmobile: bockw: Do not enable CONFIG_DEVTMPFS defconfig)

This patch removed below from defconfig

-CONFIG_DEVTMPFS=y
-CONFIG_DEVTMPFS_MOUNT=y

But, why this has relationship to sound ??

#0 - #3 sound device have no problem.
But #4 sound device will be broken by this patch
Do you have any idea ?

--- my kernel log -------
...
ALSA device list:
  #0: SSI56-AK4643
  #1: SSI3-AK4554(playback)
  #2: SSI4-AK4554(capture)
  #3: SSI7-AK4554(playback)
  #4: SSI8-AK4554(capture)

--- test result of 4th device (bad case) ---

# /home/arecord -c 2 -t wav -d 10 -r 48000 -f S16_LE -D hw:4 /tmp/hoge
ALSA lib pcm_hw.c:1433:(_snd_pcm_hw_open) Invalid value for card
arecord: main:608: audio open error: No such file or directory

--- test result of 4th device (good case) ---

# /home/arecord -c 2 -t wav -d 10 -r 48000 -f S16_LE -D hw:4 /tmp/hoge
Recording WAVE '/tmp/hoge' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo

Re: BockW 4th sound doesn't work on latest linus/master

[Kuninori Morimoto]

Hi Simon, Mark again

> I noticed that bockw 4th sound device doesn't work on
> latest linus/master.
> 
> My git bisect said the trigger is this patch
> 
> e14ee5deab24200e4b70fe31a8c806f0acd3d37c
> (ARM: shmobile: bockw: Do not enable CONFIG_DEVTMPFS defconfig)
> 
> This patch removed below from defconfig
> 
> -CONFIG_DEVTMPFS=y
> -CONFIG_DEVTMPFS_MOUNT=y
> 
> But, why this has relationship to sound ??
> 
> #0 - #3 sound device have no problem.
> But #4 sound device will be broken by this patch
> Do you have any idea ?
> 
> --- my kernel log -------
> ...
> ALSA device list:
>   #0: SSI56-AK4643
>   #1: SSI3-AK4554(playback)
>   #2: SSI4-AK4554(capture)
>   #3: SSI7-AK4554(playback)
>   #4: SSI8-AK4554(capture)
> 
> --- test result of 4th device (bad case) ---
> 
> # /home/arecord -c 2 -t wav -d 10 -r 48000 -f S16_LE -D hw:4 /tmp/hoge
> ALSA lib pcm_hw.c:1433:(_snd_pcm_hw_open) Invalid value for card
> arecord: main:608: audio open error: No such file or directory
> 
> --- test result of 4th device (good case) ---
> 
> # /home/arecord -c 2 -t wav -d 10 -r 48000 -f S16_LE -D hw:4 /tmp/hoge
> Recording WAVE '/tmp/hoge' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo

My rootfs with no DEVTMPFS didn't have /dev/snd/controlC4, /dev/snd/pcmC4D0c
It start works if I created these node.

Re: BockW 4th sound doesn't work on latest linus/master

[Simon Horman]

On Mon, Jan 27, 2014 at 11:51:37PM -0800, Kuninori Morimoto wrote:
> 
> Hi Simon, Mark again
> 
> > I noticed that bockw 4th sound device doesn't work on
> > latest linus/master.
> > 
> > My git bisect said the trigger is this patch
> > 
> > e14ee5deab24200e4b70fe31a8c806f0acd3d37c
> > (ARM: shmobile: bockw: Do not enable CONFIG_DEVTMPFS defconfig)
> > 
> > This patch removed below from defconfig
> > 
> > -CONFIG_DEVTMPFS=y
> > -CONFIG_DEVTMPFS_MOUNT=y
> > 
> > But, why this has relationship to sound ??
> > 
> > #0 - #3 sound device have no problem.
> > But #4 sound device will be broken by this patch
> > Do you have any idea ?
> > 
> > --- my kernel log -------
> > ...
> > ALSA device list:
> >   #0: SSI56-AK4643
> >   #1: SSI3-AK4554(playback)
> >   #2: SSI4-AK4554(capture)
> >   #3: SSI7-AK4554(playback)
> >   #4: SSI8-AK4554(capture)
> > 
> > --- test result of 4th device (bad case) ---
> > 
> > # /home/arecord -c 2 -t wav -d 10 -r 48000 -f S16_LE -D hw:4 /tmp/hoge
> > ALSA lib pcm_hw.c:1433:(_snd_pcm_hw_open) Invalid value for card
> > arecord: main:608: audio open error: No such file or directory
> > 
> > --- test result of 4th device (good case) ---
> > 
> > # /home/arecord -c 2 -t wav -d 10 -r 48000 -f S16_LE -D hw:4 /tmp/hoge
> > Recording WAVE '/tmp/hoge' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
> 
> My rootfs with no DEVTMPFS didn't have /dev/snd/controlC4, /dev/snd/pcmC4D0c
> It start works if I created these node.

Makes sense.

Could you post a patch to revert the offending defconfig change.

Geert tells me that DEVTMPFS is needed for udev on Debian Jesse
and is also common in other arm defconfigs. So I think it should be
enabled.

Re: BockW 4th sound doesn't work on latest linus/master

[Kuninori Morimoto]

Hi Simon

> Could you post a patch to revert the offending defconfig change.
> 
> Geert tells me that DEVTMPFS is needed for udev on Debian Jesse
> and is also common in other arm defconfigs. So I think it should be
> enabled.

Yes, it is needed for udev.
I can send patch, but, according to git comment,
the defconfig which doesn't have DEVTMPFS is not only BockW.
Do you want "revert patch" ? or "add DEVTMPFS for all board patch" ?

Best regards
---
Kuninori Morimoto

Re: BockW 4th sound doesn't work on latest linus/master

[Simon Horman]

On Tue, Jan 28, 2014 at 11:17:06PM -0800, Kuninori Morimoto wrote:
> 
> Hi Simon
> 
> > Could you post a patch to revert the offending defconfig change.
> > 
> > Geert tells me that DEVTMPFS is needed for udev on Debian Jesse
> > and is also common in other arm defconfigs. So I think it should be
> > enabled.
> 
> Yes, it is needed for udev.
> I can send patch, but, according to git comment,
> the defconfig which doesn't have DEVTMPFS is not only BockW.
> Do you want "revert patch" ? or "add DEVTMPFS for all board patch" ?

I think the second option would be best.