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UPSTREAM: 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.

Change-Id: Ibd9040be45da03174d63313e302b994720c7edd3
Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
(cherry picked from commit a939af0c748e2ea1eeb8cf47fa9771a95786de70)
This commit is contained in:
Seung-Woo Kim 2017-07-31 18:08:10 +09:00 committed by Kever Yang
parent 115142eae5
commit 80553dd1d8
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
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@ -111,7 +111,8 @@ 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);
(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),