mmc: sdhci: fix sdma bug for large file transfer

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@marvell.com>

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 77a9e708d07af7ac1cc793e62085d5ae286316f0..fce0ef091184b39e07adf8a0acc8c29ab6a2d3dc 100644 (file)
--- 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);
                }