8 Sep
2013
8 Sep
'13
5:24 p.m.
2013/9/8 vichy vichy.kuo@gmail.com:
hi all: I try to do webcam audio capture on my arm platform. when I execute audio capture I got below message "retire_capture_urb: 108 callbacks suppressed"
my questions:
- where I can get the message "retire_capture_urb: 108 callbacks
suppressed" show in sound/usb driver? I try to grep -rwn '"retire_capture_urb.*' sound/usb/*, but get nothing.
- from usb mon log, it seems HW keep Active status high even until
ehci_io_watchdog happen, because the ep status is -EXDEV. if my observation is correct, is it possible to modify usb sound driver to purposely send fix number urbs. Because from the usb mon log, the first 8 urb will get time out already.
BTW, forget to say my kernel version is 3.8.2
thanks for your help in advance,