tree 720113db030b5e972425399d138496f75a1e74f6
parent 60a6d2999750d04f106f4e376dc15d3c0914881f
author Minas Harutyunyan <Minas.Harutyunyan@synopsys.com> 1600956519 +0400
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1603961714 +0100

usb: dwc2: Fix INTR OUT transfers in DDMA mode.

[ Upstream commit b2c586eb07efab982419f32b7c3bd96829bc8bcd ]

In DDMA mode if INTR OUT transfers mps not multiple of 4 then single packet
corresponds to single descriptor.

Descriptor limit set to mps and desc chain limit set to mps *
MAX_DMA_DESC_NUM_GENERIC. On that descriptors complete, to calculate
transfer size should be considered correction value for each descriptor.

In start request function, if "continue" is true then dma buffer address
should be incremmented by offset for all type of transfers, not only for
Control DATA_OUT transfers.

Fixes: cf77b5fb9b394 ("usb: dwc2: gadget: Transfer length limit checking for DDMA")
Fixes: e02f9aa6119e0 ("usb: dwc2: gadget: EP 0 specific DDMA programming")
Fixes: aa3e8bc81311e ("usb: dwc2: gadget: DDMA transfer start and complete")

Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>