tree 9127ca038b29340185caff4621126ae83baf14f1
parent 2e25134122c25ebb0679b4bbd536fb46c669f9d7
author Daniel Glöckner <dg@emlix.com> 1243508414 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> 1245127486 -0700

USB: gadget: imx_udc: don't queue more data when zlp is to be sent

When a zero-length packet has been requested and another packet is
written into the fifo, the MX1 tends to send the first byte of the
previous packet instead of the first byte of the current packet.
The CRC is adjusted accordingly so that this packet is _not_
discarded by the host.

Waiting for the ZLPS bit to clear avoids these bad packets.


Signed-off-by: Daniel Glöckner <dg@emlix.com>
Cc: Darius Augulis <augulis.darius@gmail.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>