[U-Boot] [PATCH V4 5/5] mmc: sdhci: fix sdma bug for large file transfer

[Lei Wen]

SDHCI spec need to reset the sdma base address while the software
try to accorss the 512k bytes address boundary. When meet such
accross behavior, sdhci controller would generate a interrupt
automatically, and software need handle this.

Signed-off-by: Lei Wen <leiwen at marvell.com>
---
Changelog:
V2: no change
V3: new added fix for sdma bug
V4: no change

 drivers/mmc/sdhci.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 77a9e70..fce0ef0 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -104,7 +104,7 @@ static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data,
 #ifdef CONFIG_MMC_SDMA
 		if (stat & SDHCI_INT_DMA_END) {
 			sdhci_writel(host, SDHCI_INT_DMA_END, SDHCI_INT_STATUS);
-			start_addr &= SDHCI_DEFAULT_BOUNDARY_SIZE - 1;
+			start_addr &= ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1);
 			start_addr += SDHCI_DEFAULT_BOUNDARY_SIZE;
 			sdhci_writel(host, start_addr, SDHCI_DMA_ADDRESS);
 		}
-- 
1.7.0.4