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path: root/drivers/usb/dwc2/gadget.c
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Diffstat (limited to 'drivers/usb/dwc2/gadget.c')
-rw-r--r--drivers/usb/dwc2/gadget.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 1d4aef8d4137..bff48a8a1984 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -835,19 +835,22 @@ static void dwc2_gadget_fill_nonisoc_xfer_ddma_one(struct dwc2_hsotg_ep *hs_ep,
* with corresponding information based on transfer data.
*/
static void dwc2_gadget_config_nonisoc_xfer_ddma(struct dwc2_hsotg_ep *hs_ep,
- struct usb_request *ureq,
- unsigned int offset,
+ dma_addr_t dma_buff,
unsigned int len)
{
+ struct usb_request *ureq = NULL;
struct dwc2_dma_desc *desc = hs_ep->desc_list;
struct scatterlist *sg;
int i;
u8 desc_count = 0;
+ if (hs_ep->req)
+ ureq = &hs_ep->req->req;
+
/* non-DMA sg buffer */
- if (!ureq->num_sgs) {
+ if (!ureq || !ureq->num_sgs) {
dwc2_gadget_fill_nonisoc_xfer_ddma_one(hs_ep, &desc,
- ureq->dma + offset, len, true);
+ dma_buff, len, true);
return;
}
@@ -1135,7 +1138,7 @@ static void dwc2_hsotg_start_req(struct dwc2_hsotg *hsotg,
offset = ureq->actual;
/* Fill DDMA chain entries */
- dwc2_gadget_config_nonisoc_xfer_ddma(hs_ep, ureq, offset,
+ dwc2_gadget_config_nonisoc_xfer_ddma(hs_ep, ureq->dma + offset,
length);
/* write descriptor chain address to control register */
@@ -2037,12 +2040,13 @@ static void dwc2_hsotg_program_zlp(struct dwc2_hsotg *hsotg,
dev_dbg(hsotg->dev, "Receiving zero-length packet on ep%d\n",
index);
if (using_desc_dma(hsotg)) {
+ /* Not specific buffer needed for ep0 ZLP */
+ dma_addr_t dma = hs_ep->desc_list_dma;
+
if (!index)
dwc2_gadget_set_ep0_desc_chain(hsotg, hs_ep);
- /* Not specific buffer needed for ep0 ZLP */
- dwc2_gadget_fill_nonisoc_xfer_ddma_one(hs_ep, &hs_ep->desc_list,
- hs_ep->desc_list_dma, 0, true);
+ dwc2_gadget_config_nonisoc_xfer_ddma(hs_ep, dma, 0);
} else {
dwc2_writel(hsotg, DXEPTSIZ_MC(1) | DXEPTSIZ_PKTCNT(1) |
DXEPTSIZ_XFERSIZE(0),