From 0b3e4af3c740937d1e0f7d444f75d087c29a2d1b Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 12 Aug 2016 13:10:10 +0300 Subject: [PATCH] usb: dwc3: gadget: add sg and num_pending_sgs to dwc3_request These two fields will be used in a follow-up patch to track how many entries of request's sglist we have already processed. The reason is that if a gadget driver sends an sglist with more entries then we can fit in the ring, we will have to continue processing remaining afterwards. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 45d6de5..1a6cc48 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -685,6 +685,8 @@ struct dwc3_hwparams { * @request: struct usb_request to be transferred * @list: a list_head used for request queueing * @dep: struct dwc3_ep owning this request + * @sg: pointer to first incomplete sg + * @num_pending_sgs: counter to pending sgs * @first_trb_index: index to first trb used by this request * @epnum: endpoint number to which this request refers * @trb: pointer to struct dwc3_trb @@ -697,7 +699,9 @@ struct dwc3_request { struct usb_request request; struct list_head list; struct dwc3_ep *dep; + struct scatterlist *sg; + unsigned num_pending_sgs; u8 first_trb_index; u8 epnum; struct dwc3_trb *trb; -- 2.7.4