usb: dwc2 : invalidate dcache before starting DMA

[karo-tx-uboot.git] / drivers / usb / gadget / dwc2_udc_otg_xfer_dma.c

diff --git a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
index 12f5c85c310e09cd3750f1bdd26f63c84270c66d..0d6d2fba8a0f3f22c8f69be5531a4f9282814be9 100644 (file)
--- a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
+++ b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
@@ -110,6 +110,9 @@ static int setdma_rx(struct dwc2_ep *ep, struct dwc2_request *req)
 
        ctrl =  readl(&reg->out_endp[ep_num].doepctl);
 
+       invalidate_dcache_range((unsigned long) ep->dma_buf,
+                               (unsigned long) ep->dma_buf + ep->len);
+
        writel((unsigned int) ep->dma_buf, &reg->out_endp[ep_num].doepdma);
        writel(DOEPT_SIZ_PKT_CNT(pktcnt) | DOEPT_SIZ_XFER_SIZE(length),
               &reg->out_endp[ep_num].doeptsiz);