From: Andrew Goodbody Date: Tue, 31 May 2016 15:05:27 +0000 (-0500) Subject: usb: musb: Stop bulk endpoint while queue is rotated X-Git-Tag: v3.2.82~47 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=7ba4a8aad2441531e9d434ef07312944c8cc91e4;hp=442f839f65a350dc3ee910fb83c30757566dc98b usb: musb: Stop bulk endpoint while queue is rotated commit 7b2c17f829545df27a910e8d82e133c21c9a8c9c upstream. Ensure that the endpoint is stopped by clearing REQPKT before clearing DATAERR_NAKTIMEOUT before rotating the queue on the dedicated bulk endpoint. This addresses an issue where a race could result in the endpoint receiving data before it was reprogrammed resulting in a warning about such data from musb_rx_reinit before it was thrown away. The data thrown away was a valid packet that had been correctly ACKed which meant the host and device got out of sync. Signed-off-by: Andrew Goodbody Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman [bwh: Backported to 3.2: adjust context, indentation] Signed-off-by: Ben Hutchings --- Reading git-diff-tree failed