Hi Joachim Every time aplay wavfile ,there is kernel stack overflow.And the "xsysace" is a CF card driver . when i just writing data to codec 0 with a simple program ,it is OK, but if i read data from CF card and play ,it overflow also. Maybe there is something conflict with CF card driver and AC97 driver .
Thanks for your note ,i will test it again. Qin Lin Joachim Förster wrote: > > Hi Qin Lin, > > Do you get this overflow everytime you try aplay? Or, do you get it > sometimes, only? > > What confuses me is, that in your kernel messages the "TASK = ... > 'xsysace'" is mentioned. Perhaps there is some relation with the sysace > driver? Or do I miss something, here? > Did you try play a .wav file from a RAM disk or NFS-mounted location? I > have to note, that I am not using sysace and I haven't tried it jet - > especially together with my AC97 driver. > > As a first step, no matter what, you could compile your kernel with > CONFIG_SND_DEBUG and additionally replace the line > > #define PDEBUG_FACILITIES (UNKNOWN | INIT_FAILURE | WORK_FAILURE) > > in ml403-ac97cr.c with > > #define PDEBUG_FACILITIES (UNKNOWN | INIT_FAILURE | WORK_FAILURE | > WORK_INFO | INIT_INFO) > > This will give you a, well, huge amount of debugging messages > (KERN_DEBUG). There we should see, how far my driver is getting (to some > extent). > > Joachim > > _______________________________________________ > Linuxppc-embedded mailing list > [email protected] > https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > -- View this message in context: http://www.nabble.com/ML403-AC97-ALSA-Driver-problem-tf4351591.html#a12470485 Sent from the linuxppc-embedded mailing list archive at Nabble.com. _______________________________________________ Linuxppc-embedded mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-embedded
