[alsa-devel] question about aplay fails on arm 64

[曹能华]

Hi, Clemens:

       Sorry for my mistake. After avoiding using mmap to transer data from
userface to kernel, alsa will use snd_pcm_ioctl_compat to do this work. I
check the returned value, and it seems good. but error still happned.


[  198.838437] 837 (aplay) snd_pcm_ioctl_sync_ptr_compat++

[  198.845630] 837 (aplay) state:0x2

[  198.850803] 837 (aplay) hw_ptr:0x0

[  198.855658] 837 (aplay) tstamp:0x0

[  198.860934] 837 (aplay) suspend_stat:0x0

[  198.866878] 837 (aplay) tstamp:0x0

[  198.871682] 837 (aplay) appl_ptr:0x0

[  198.877199] 837 (aplay) avail_min:0x300

[  198.882574] 837 (aplay) snd_pcm_ioctl_sync_ptr_compat--

[  198.890779] 837 (aplay) ======snd_pcm_ioctl_compat++++++++

[  198.898759] 837 (aplay) ======snd_pcm_ioctl_compat11

[  198.905507] 837 (aplay) ========snd_pcm_ioctl_xferi_compat++++

[  198.960915] 837 (aplay) ========snd_pcm_ioctl_xferi_compat-----,
result=0x300, buf=0x33b640, frames=0x300

[  198.982513] 837 (aplay) Bad mode in Error handler detected, code
0xbf000000

[  198.992198] 837 (aplay) CPU: 0 PID: 837 Comm: aplay Tainted: G      D
3.10.0+ #44

[  199.002870] 837 (aplay) task: ffffffc019adb0c0 ti: ffffffc019a36000
task.ti: ffffffc019a36000

[  199.014226] 837 (aplay) PC is at 0xf7228aec

[  199.020120] 837 (aplay) LR is at 0x0

[  199.025312] 837 (aplay) pc : [<00000000f7228aec>] lr :
[<0000000000000000>] pstate: 60000010

[  199.036415] 837 (aplay) sp : ffffffc019a37ff0


BR
Cosmo


2013/11/21 Clemens Ladisch <clemens at ladisch.de>

> Please don't top-post.
>
> Cosmo wrote:
> > Hi, Clemens
>
> Don't drop the mailing list from replies.
>
> > Do you mean we need to change ALSA's mmap code to adapt to ARM64.
>
> Maybe.
>
> > Do you know how to port it?
>
> No.
>
>
> Regards,
> Clemens
>