[Intel-gfx] [i-g-t PATCH] tests: do snd_hda_intel unbind before unload in module reload test

[Yang, Libin]

> -----Original Message-----
> From: Nikula, Jani
> Sent: Monday, October 31, 2016 4:40 PM
> To: intel-gfx at lists.freedesktop.org
> Cc: Nikula, Jani <jani.nikula at intel.com>; Zhang, Keqiao
> <keqiao.zhang at intel.com>; Yang, Libin <libin.yang at intel.com>
> Subject: [i-g-t PATCH] tests: do snd_hda_intel unbind before unload in
> module reload test
> 
> Try to make sure the snd_hda_intel module is not in use, and can be
> unloaded.
> 
> Cc: Keqiao Zhang <keqiao.zhang at intel.com>
> Cc: Libin Yang <libin.yang at intel.com>
> Signed-off-by: Jani Nikula <jani.nikula at intel.com>
> 
> ---
> 
> Keqiao, Libin, here's the script this patch is against:
> 
> https://cgit.freedesktop.org/drm/igt-gpu-
> tools/tree/tests/drv_module_reload_basic
> ---
>  tests/drv_module_reload_basic | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/tests/drv_module_reload_basic b/tests/drv_module_reload_basic
> index b8cad88133e9..c0676fc65db0 100755
> --- a/tests/drv_module_reload_basic
> +++ b/tests/drv_module_reload_basic
> @@ -33,6 +33,9 @@ function reload() {
>  	pkill alsactl
>  	snd_hda_intel_unloaded=0
>  	if mod_loaded snd_hda_intel; then
> +		if [ -e /sys/bus/pci/drivers/snd_hda_intel/unbind ]; then
> +			echo "0000:00:03.0" >

"0000:00:03.0" is platform related.
We should check lspci -vvv |grep Audio to get the number.
Or we can check /sys/bus/pci/drivers/snd_hda_intel/ folder to get the number.
And sometimes there are 2 sound cards to unbind.

Regards,
Libin

> /sys/bus/pci/drivers/snd_hda_intel/unbind
> +		fi
>  		if rmmod snd_hda_intel; then
>  			snd_hda_intel_unloaded=1
>  		else
> --
> 2.1.4