mmc: sdhci: fix cache flush

Only flush the memory range needed.

Signed-off-by: Lei Wen <leiwen@marvell.com>

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 9ebd33d..4a92453 100644 (file)
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -196,7 +196,7 @@ int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
 
        sdhci_writel(host, cmd->cmdarg, SDHCI_ARGUMENT);
 #ifdef CONFIG_MMC_SDMA
-       flush_cache(0, ~0);
+       flush_cache(start_addr, trans_bytes);
 #endif
        sdhci_writew(host, SDHCI_MAKE_CMD(cmd->cmdidx, flags), SDHCI_COMMAND);
        do {