usb: dwc3: gadget: handle request->zero

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So far, dwc3 has always missed request->zero
handling for every endpoint. Let's implement
that so we can handle cases where transfer must
be finished with a ZLP.

Note that dwc3 is a little special. Even though
we're dealing with a ZLP, we still need a buffer
of wMaxPacketSize bytes; to hide that detail from
every gadget driver, we have a preallocated buffer
of 1024 bytes (biggest bulk size) to use (and
share) among all endpoints.

Reported-by: Ravi B <ravibabu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

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This commit is contained in:

Felipe Balbi 2015-12-02 10:06:45 -06:00

parent 3ff4b5733b

commit 04c03d10e5

2 changed files with 51 additions and 2 deletions

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3

drivers/usb/dwc3/core.h

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50

drivers/usb/dwc3/gadget.c

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