Hi ,
Thanx for the reply .
Actually since i am using a embedded target , it is not possible to
use higher kernel version .
The error logs comes from retire_capture_urb function in usbaudio.c .
for (i = 0; i < urb->number_of_packets; i++) {
cp = (unsigned char *)urb->transfer_buffer +
urb->iso_frame_desc[i].offset;
if (urb->iso_frame_desc[i].status) {
snd_printd(KERN_ERR "frame %d active: %d\n",
i, urb->iso_frame_desc[i].status);
// continue;
}
....
any clues / pointer to functions .changes which can resolve this
problem in existing linux kernel ?
Thanx & Regards
Amit Nagal
On Wed, Oct 20, 2010 at 9:47 AM, Greg KH <greg@xxxxxxxxx> wrote:
> On Wed, Oct 20, 2010 at 09:34:19AM +0530, Amit Nagal wrote:
>> Hi ,
>>
>> i am doing usb audio streaming over usb audio class interface .
>>
>> whenever i do a usb disconnect during audio streaming , linux kernel
>> get stucks into this infinite loop and the system simply stucks .
>>
>> i get these log messages infinitely :
>>
>> ALSA sound/usb/usbaudio.c:354: frame 0 active: -71
>>
>> ALSA sound/usb/usbaudio.c:354: frame 0 active: -71
>>
>> ALSA sound/usb/usbaudio.c:354: frame 0 active: -18
>>
>> ALSA sound/usb/usbaudio.c:354: frame 0 active: -18
>>
>> ALSA sound/usb/usbaudio.c:354: frame 0 active: -18
>>
>> ALSA sound/usb/usbaudio.c:354: frame 0 active: -18
>>
>>
>> 1) i am using linux kernel version 2.6.30.9 .
>
> That is a few years old and obsolete and not supported by anyone. Can
> you duplicate this on the latest kernel version (2.6.35 or 2.6.35-rc8)?
>
> thanks,
>
> greg k-h
>
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