usb: musb: Stop bulk endpoint while queue is rotated

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commit 7b2c17f829 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 <andrew.goodbody@cambrionix.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Andrew Goodbody 2016-05-31 10:05:27 -05:00 • committed by Greg Kroah-Hartman

parent 089a2d8400

commit a2cf3427dc

1 changed files with 7 additions and 1 deletions

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drivers/usb/musb/musb_host.c

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