From mboxrd@z Thu Jan 1 00:00:00 1970 From: Clemens Ladisch Subject: Re: [alsa-devel] question about webcam audio capture Date: Mon, 09 Sep 2013 15:37:39 +0200 Message-ID: <522DCF23.8090301@ladisch.de> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: vichy Cc: linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org List-Id: alsa-devel@alsa-project.org vichy wrote: > 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" This means that the retire_capture_urb() function printed lots of messages, and that 108 of them were thrown away because they were identical. You have to look at the previous line to get the actual message. > 2. from usb mon log, it seems HW keep Active status high even until > ehci_io_watchdog happen, because the ep status is -EXDEV. How are you trying to capture data? Regards, Clemens -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html