usb: dwc2: make the scheduler handle excessive NAKs better
usb: dwc2: make the scheduler handle excessive NAKs better

I'm seeing problems with a d-link dwcl-g122 wifi dongle that
someone sent me. There are reports of other wifi dongles with the
same/similar problem. The devices appear to be NAKing to the point
of confusing the dwc2 driver completely.

The attached patch helps with my d-link dwl-g122 - it's adapted
from the Raspberry Pi dwc_otg driver, which is a modified version
of the Synopsys vendor driver. The error recovery is still valid
after the patch, I think.

Cc: Dom Cobley <0ccb355d7aa08f1a2a9103e16d9034fc018e984f@gmail.com>
Signed-off-by: Nick Hudson <24ae96845b7d40e0a8b2dbb51132ed0e8569a54b@netbsd.org>
Signed-off-by: Paul Zimmerman <e1f0d1b12051c0d55589ba9a6d7c10e383763d34@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs