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(parent: 69e273c) | patch
usb: musb: cppi41: fix not transmitting zero length packet issue
authorBin Liu <b-liu@ti.com>
Tue, 12 Aug 2014 19:18:43 +0000 (14:18 -0500)
committerFelipe Balbi <balbi@ti.com>
Wed, 3 Sep 2014 14:15:56 +0000 (09:15 -0500)
commit9267edaf8cd7b0ef2cd7785c677fe792c077b6ab
treeaf2a1a8b232c7e7a3c5ade8aba73c5b96374d0a8tree | snapshot (tar.gz zip)
parent69e273c0b0a3c337a521d083374c918dc52c666fcommit | diff
usb: musb: cppi41: fix not transmitting zero length packet issue

CPPI TX does not transmit ZLP for TX transfers which
- transfer size is multiple of EP packet size,
- and URB_ZERO_PACKET is set in urb->transfer_flags.

The fix is transmitting the ZLP using PIO mode after the CPPI TX is
done.

Validated using the following usbtest write case in MUSB host mode.

  # testusb -t1 -c1

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
drivers/usb/musb/musb_cppi41.c diff | blob | blame | history