On Fri, 01 Mar 2024 02:18:41 +0100, songxiebing wrote: > > From: songxiebing <songxiebing@xxxxxxxxxx> > > In azx_probe_codecs function, when bus->codec_mask is becomes to 0(no codecs), > execute azx_init_chip, bus->codec_mask will be initialized to a value again, > this causes snd_hda_codec_new function to run, the process is as follows: > -->snd_hda_codec_new > -->snd_hda_codec_device_init > -->snd_hdac_device_init---snd_hdac_read_parm(...AC_PAR_VENDOR_ID) 2s > ---snd_hdac_read_parm(...AC_PAR_VENDOR_ID) 2s > ---snd_hdac_read_parm(...AC_PAR_SUBSYSTEM_ID) 2s > ---snd_hdac_read_parm(...AC_PAR_REV_ID) 2s > ---snd_hdac_read_parm(...AC_PAR_NODE_COUNT) 2s > when no codecs, read communication is error, each command will be polled for > 2 second, a total of 10s, it is easy to some problem. > like this: > 2 [ 14.833404][ 6] [ T164] hda 0006:00: Codec #0 probe error; disabling it... > 3 [ 14.844178][ 6] [ T164] hda 0006:00: codec_mask = 0x1 > 4 [ 14.880532][ 6] [ T164] hda 0006:00: too slow response, last cmd=0x0f0000 > 5 [ 15.891988][ 6] [ T164] hda 0006:00: too slow response, last cmd=0x0f0000 > 6 [ 16.978090][ 6] [ T164] hda 0006:00: too slow response, last cmd=0x0f0001 > 7 [ 18.140895][ 6] [ T164] hda 0006:00: too slow response, last cmd=0x0f0002 > 8 [ 19.135516][ 6] [ T164] hda 0006:00: too slow response, last cmd=0x0f0004 > 10 [ 19.900086][ 6] [ T164] hda 0006:00: no codecs initialized > 11 [ 45.573398][ 2] [ C2] watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [kworker/2:0:25] > > Here, when bus->codec_mask is 0, use a direct break to avoid execute snd_hda_codec_new function. > > Signed-off-by: songxiebing <songxiebing@xxxxxxxxxx> > --- > Changes in v2: fix some non-ASCII comma letters. Thanks, applied now. Takashi
