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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2015-03-03 17:32:10 +0100 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2015-04-14 05:48:12 +0200 |
| commit | 5dc4538bf3fea0baf4ca2e4191e0e62991fbd779 (patch) | |
| tree | 7e1eca9ac3823c36cf93a7a8af46e21cc45a60b9 /drivers/usb | |
| parent | 7e9cb7962f401439c9f107878100810b138f6ab9 (diff) | |
| download | u-boot-imx-5dc4538bf3fea0baf4ca2e4191e0e62991fbd779.zip u-boot-imx-5dc4538bf3fea0baf4ca2e4191e0e62991fbd779.tar.gz u-boot-imx-5dc4538bf3fea0baf4ca2e4191e0e62991fbd779.tar.bz2 | |
usb: dwc3: add a workaround for too small OUT requests
DWC3 hangs on OUT requests smaller than maxpacket size,
so HACK the request length to be at least equal to maxpacket size.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index de4d908..7c342c6 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -975,6 +975,14 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) req->epnum = dep->number; /* + * DWC3 hangs on OUT requests smaller than maxpacket size, + * so HACK the request length + */ + if (dep->direction == 0 && + req->request.length < dep->endpoint.maxpacket) + req->request.length = dep->endpoint.maxpacket; + + /* * We only add to our list of requests now and * start consuming the list once we get XferNotReady * IRQ. |