On 21.10.2012 22:43, Artem S. Tashkinov wrote: >> Nice. Could you do that again with the patch applied I sent yo some >> hours ago? > > That patch was of no help - the system has crashed and I couldn't spot > relevant > messages. > > I've no idea what it means.
The sequence of driver callbacks issued on a stream start is .open() .hw_params() .prepare() .trigger() If the ALSA part really causes this issue, the bad things happen either in any of the driver callback functions or in the core underneath. The patch I sent returns an error from the hw_params callback, and as you still see the problem, that means that the crash happens before any of the USB audio streaming really starts. Could you try and return -EINVAL from snd_usb_capture_open() please? If anyone has a better idea on how to debug this, please chime in. Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
