From: Moiz Sonasath <m-sonasath@xxxxxx>
To allow ep0 out transfers of upto bounce buffer size
instead of maxpacketsize, use the transfer size as multiple
of ep0 maxpacket size.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Moiz Sonasath <m-sonasath@xxxxxx>
Signed-off-by: Partha Basak <p-basak2@xxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/usb/dwc3/ep0.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 25910e2..a40d3bb 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -559,8 +559,12 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
length = trb->size & DWC3_TRB_SIZE_MASK;
if (dwc->ep0_bounced) {
+ unsigned transfer_size = ur->length;
+ unsigned maxp = ep0->endpoint.maxpacket;
+
+ transfer_size += (maxp - (transfer_size % maxp));
transferred = min_t(u32, ur->length,
- ep0->endpoint.maxpacket - length);
+ transfer_size - length);
memcpy(ur->buf, dwc->ep0_bounce, transferred);
dwc->ep0_bounced = false;
} else {
--
1.7.9.2
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
