diff options
| author | Moiz Sonasath <m-sonasath@ti.com> | 2012-03-14 06:44:56 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2012-04-10 11:21:43 +0200 |
| commit | 566ccdda07dc5898272b6fbad9c616fc44be305a (patch) | |
| tree | 556b76d96c6061db261d064725866f965d52c6ca /drivers/usb | |
| parent | usb: gadget: udc-core: stop UDC on device-initiated disconnect (diff) | |
| download | linux-566ccdda07dc5898272b6fbad9c616fc44be305a.tar.xz linux-566ccdda07dc5898272b6fbad9c616fc44be305a.zip | |
usb: dwc3: ep0: Handle requests greater than wMaxPacketSize
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@vger.kernel.org
Signed-off-by: Moiz Sonasath <m-sonasath@ti.com>
Signed-off-by: Partha Basak <p-basak2@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/ep0.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 25910e251c04..a40d3bb0f1c2 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 { |