Re: [U-Boot] [u-boot 31/40] usb: dwc3: ep0: preparation for implementing chained TRB

Hi Kishon,

No functional change. Modified few things so that there are no code duplication while implementing chained TRB.

Signed-off-by: Kishon Vijay Abraham I kishon@ti.com

drivers/usb/dwc3/ep0.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 977d6d4..fce2558 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -761,7 +761,10 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, struct usb_request *ur; struct dwc3_trb *trb; struct dwc3_ep *ep0;

• u32 transferred;

• unsigned transfer_size = 0;
• unsigned maxp;
• void *buf;
• u32 transferred = 0; u32 status; u32 length; u8 epnum;

@@ -790,18 +793,19 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, }

ur = &r->request;

• buf = ur->buf;

  length = trb->size & DWC3_TRB_SIZE_MASK;

• if (dwc->ep0_bounced) {

• unsigned transfer_size = ur->length;
  

• unsigned maxp = ep0->endpoint.maxpacket;
  

• maxp = ep0->endpoint.maxpacket;

• transfer_size += (maxp - (transfer_size % maxp));
  

• transferred = min_t(u32, ur->length,
  

• 		transfer_size - length);
  

• if (dwc->ep0_bounced) {

• transfer_size = roundup((ur->length - transfer_size),
  

• 			maxp);
  

• transferred = min_t(u32, ur->length - transferred,
  

• 		    transfer_size - length);
  

  dwc3_flush_cache((int)dwc->ep0_bounce,

DWC3_EP0_BOUNCE_SIZE);

• memcpy(ur->buf, dwc->ep0_bounce, transferred);
  

• memcpy(buf, dwc->ep0_bounce, transferred);
  

  } else { transferred = ur->length - length; }

Reviewed-by: Lukasz Majewski l.majewski@samsung.com