On Wed, 13 Jul 2011, Ming Lei wrote: > Hi, > > On Tue, Jul 12, 2011 at 11:44 PM, Alan Stern <st...@rowland.harvard.edu> > wrote: > > On Tue, 12 Jul 2011, Ming Lei wrote: > > > >> Hi Laurent, > >> > >> After resume from sleep, �all the ISO packets from camera are like below: > >> > >> ffff880122d9f400 3527230728 S Zi:1:004:1 -115:1:2568 32 -18:0:1600 > >> -18:1600:1600 -18:3200:1600 -18:4800:1600 -18:6400:1600 51200 < > >> ffff880122d9d400 3527234708 C Zi:1:004:1 0:1:2600:0 32 0:0:12 > >> 0:1600:12 0:3200:12 0:4800:12 0:6400:12 51200 = 0c8c0000 0000fa7e > >> 012f1b05 00000000 00000000 00000000 00000000 00000000 > >> > >> All are headed with 0c8c0000, see attached usbmon captures. > > > > Maybe this device needs a USB_QUIRK_RESET_RESUME entry in quirks.c. > > I will try it, but seems unbind&bind driver don't produce extra usb reset > signal > to the device. > > Also, the problem didn't happen in runtime pm case, just happen in > wakeup from system suspend case. uvcvideo has enabled auto suspend > already at default.
Why should system suspend be different from runtime suspend? Have you compared usbmon traces for the two types of suspend? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
