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usb:udc:s3c: Reduce dcache invalidate range for UDC receive buffer

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The s3c udc driver sends data in a max packet size. Therefore the dcache
invalidate range shall be equal to max packet, not the entire
DMA_BUFFER_SIZE.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Cc: Marek Vasut <marex@denx.de>
This commit is contained in:
Lukasz Majewski 2013-10-08 14:30:37 +02:00 committed by Marek Vasut
parent 98f686c26f
commit 57ffabe371
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/gadget/s3c_udc_otg_xfer_dma.c
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@ -117,7 +117,8 @@ static int setdma_rx(struct s3c_ep *ep, struct s3c_request *req)
invalidate_dcache_range((unsigned long) ep->dev->dma_buf[ep_num],
(unsigned long) ep->dev->dma_buf[ep_num]
+ DMA_BUFFER_SIZE);
+ ROUND(ep->ep.maxpacket,
CONFIG_SYS_CACHELINE_SIZE));
if (length == 0)
pktcnt = 1;