commit a939af0c748e2ea1eeb8cf47fa9771a95786de70
author Seung-Woo Kim <sw0312.kim@samsung.com> Mon Jul 31 18:08:10 2017 +0900
committer Marek Vasut <marek.vasut+renesas@gmail.com> Wed Sep 27 12:12:23 2017 +0200
tree 84c35261edc472d88660f6599d472b1fb347924e
parent 2e5026a2f022f1c5ab5e879684a895ccdca7690c

usb: dwc2: Align size of invalidating dcache before starting DMA

During using dwc2 usb gadget, if usb message size is too small,
following cache misaligned warning is shown:

   CACHE: Misaligned operation at range [bfdbcb00, bfdbcb04]

Align size of invalidating dcache before starting DMA to remove the
warning.

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>

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 0d6d2fb..b6164af 100644
--- a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
+++ b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
@@ -111,7 +111,8 @@
 	ctrl =  readl(&reg->out_endp[ep_num].doepctl);
 
 	invalidate_dcache_range((unsigned long) ep->dma_buf,
-				(unsigned long) ep->dma_buf + ep->len);
+				(unsigned long) ep->dma_buf +
+				ROUND(ep->len, CONFIG_SYS_CACHELINE_SIZE));
 
 	writel((unsigned int) ep->dma_buf, &reg->out_endp[ep_num].doepdma);
 	writel(DOEPT_SIZ_PKT_CNT(pktcnt) | DOEPT_SIZ_XFER_SIZE(length),