mmc: dw_mmc: transfer proper bytes to FIFO
The former implement, dw_mmc will push and pop the redundant data to
FIFO, we should transfer it according to the real size.
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
index a6a5fc6..a0a582b 100644
--- a/drivers/mmc/dw_mmc.c
+++ b/drivers/mmc/dw_mmc.c
@@ -125,6 +125,7 @@
len = dwmci_readl(host, DWMCI_STATUS);
len = (len >> DWMCI_FIFO_SHIFT) &
DWMCI_FIFO_MASK;
+ len = min(size, len);
for (i = 0; i < len; i++)
*buf++ =
dwmci_readl(host, DWMCI_DATA);
@@ -138,6 +139,7 @@
len = fifo_depth - ((len >>
DWMCI_FIFO_SHIFT) &
DWMCI_FIFO_MASK);
+ len = min(size, len);
for (i = 0; i < len; i++)
dwmci_writel(host, DWMCI_DATA,
*buf++);