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usb: dwc2: Simplify wait_for_chhltd(), remove ignore_ack
authorStefan Brüns <stefan.bruens@rwth-aachen.de>
Sun, 17 Jan 2016 03:09:52 +0000 (04:09 +0100)
committerMarek Vasut <marex@denx.de>
Sat, 23 Jan 2016 15:21:11 +0000 (16:21 +0100)
commit03460cdc3d73e06596e5925fa4a19d7e1da68b29
tree2b4af296df82e98310d1f9fa7ecfc5c787620b25tree | snapshot
parent56a7bbd7412ae8dedca14877bb7aa45199de730ccommit | diff
usb: dwc2: Simplify wait_for_chhltd(), remove ignore_ack

A transfer is completed if the XFERCOMP flag is set, irrespective of the
ACK flag. BULK OUT transfers to some HS devices complete without having
the ACK flag set, which signal the devices has responded with an NYET
to the transfer (PING protocol).
The new behaviour matches the Linux kernel minus any PING protocol.

Also see 5966defabdcc (usb: dwc2: fix bulk transfers)

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
drivers/usb/host/dwc2.c diff | blob | history
My U-Boot fork