usb: dwc3: gadget: tracking per-TRB remaining bytes
This will give us a simpler way of figuring out how
many bytes were left in each TRB. It's useful for
cases where we queue only part of an SG-list due to
amount of available TRBs at the time of kicking the
transfer.
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index ebc8a54..2322863 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -715,6 +715,7 @@ struct dwc3_hwparams {
* @dep: struct dwc3_ep owning this request
* @sg: pointer to first incomplete sg
* @num_pending_sgs: counter to pending sgs
+ * @remaining: amount of data remaining
* @epnum: endpoint number to which this request refers
* @trb: pointer to struct dwc3_trb
* @trb_dma: DMA address of @trb
@@ -729,6 +730,7 @@ struct dwc3_request {
struct scatterlist *sg;
unsigned num_pending_sgs;
+ unsigned remaining;
u8 epnum;
struct dwc3_trb *trb;
dma_addr_t trb_dma;