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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 <felipe.balbi@linux.intel.com>
hifive-unleashed-5.1
Felipe Balbi 2016-08-12 13:10:10 +03:00
parent 31162af447
commit 0b3e4af3c7
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/dwc3/core.h
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@ -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;