On Fri, Aug 09, 2013 at 09:52:13AM -0500, Thomas Pugliese wrote: > This patch fixes a kernel panic that can occur when disconnecting a > wireless USB->serial device. When the serial device disconnects, the > device cleanup procedure ends up calling usb_hcd_disable_endpoint on the > serial device's endpoints. The wusbcore uses the ABORT_RPIPE command to > abort all transfers on the given endpoint but it does not properly give > back the URBs when the transfer results return from the HWA. This patch > prevents the transfer result processing code from bailing out when it sees > a WA_XFER_STATUS_ABORTED result code so that these urbs are flushed > properly by usb_hcd_disable_endpoint. It also updates wa_urb_dequeue to > handle the case where the endpoint has already been cleaned up when > usb_kill_urb is called which is where the panic originally occurred.
This isn't unique to usb-serial drivers, is it? Or are they the only ones that happen to trigger this issue? Should this go to older kernels as well to solve the problem? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
