On Mon, 31 Oct 2016, "Yang, Libin" <[email protected]> wrote:
>> -----Original Message-----
>> From: Nikula, Jani
>> Sent: Monday, October 31, 2016 4:40 PM
>> To: [email protected]
>> Cc: Nikula, Jani <[email protected]>; Zhang, Keqiao
>> <[email protected]>; Yang, Libin <[email protected]>
>> 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 <[email protected]>
>> Cc: Libin Yang <[email protected]>
>> Signed-off-by: Jani Nikula <[email protected]>
>>
>> ---
>>
>> 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.
How about this?
for f in $(find /sys/bus/pci/drivers/snd_hda_intel -name "0000:*" -printf %f);
do
echo $f > /sys/bus/pci/drivers/snd_hda_intel/unbind
done
BR,
Jani.
>
> 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
>
--
Jani Nikula, Intel Open Source Technology Center
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