On Tuesday, March 24, 2015 at 06:01:01 AM, Stephen Warren wrote:
> When I created wait_for_chhltd(), I noticed that some instances of the
> code it replaced expected the ACK bit to be set and others didn't. I
> assumed this was an accidental inconsistency in the code, so wrote
> wait_for_chhltd() to always expect ACK to be set. This code appeared to
> work correctly for both enumeration of USB keyboards and operation of
> USB Ethernet devices. However, this change broke USB Mass Storage (at
> least my USB SD card reader). This change reverts to exactly the
> original behaviour. I'm not sure why the ACK bit isn't always set
> (perhaps a quirk in the USB HW or DWC2 controller), but the code works
> this way!
>
> Fixes: 5be4ca7d6ac8 ("usb: dwc2: unify waiting for transfer completion")
> Signed-off-by: Stephen Warren <swar...@wwwdotorg.org>
Applied to topic/dwc2 , which will go to -next. Thanks!
Best regards,
Marek Vasut
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