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.majew...@samsung.com>
Cc: Marek Vasut <ma...@denx.de>
---
Changes for v2:
- ROUND the maxpacket value to invalidate data smaller than cache line size
drivers/usb/gadget/s3c_udc_otg_xfer_dma.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/s3c_udc_otg_xfer_dma.c
b/drivers/usb/gadget/s3c_udc_otg_xfer_dma.c
index d7af5e9..1cbf8f6 100644
--- a/drivers/usb/gadget/s3c_udc_otg_xfer_dma.c
+++ b/drivers/usb/gadget/s3c_udc_otg_xfer_dma.c
@@ -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;
--
1.7.10.4
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