2013/9/8 vichy <vichy.kuo@xxxxxxxxx>: > 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: > 1. 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. > > 2. 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, -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
