mmc: cavium: Fix a shift wrapping bug

"dat" is a u64 and "shift" starts as 54 so this is a shift wrapping bug.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/mmc/host/cavium.c b/drivers/mmc/host/cavium.c
index d89c2ebcad90..d89c011bbea8 100644
--- a/drivers/mmc/host/cavium.c
+++ b/drivers/mmc/host/cavium.c
@@ -733,7 +733,7 @@ static void do_write_request(struct cvm_mmc_host *host, struct mmc_request *mrq)
                 }
 
                 while (smi->consumed < smi->length && shift >= 0) {
-                        dat |= ((u8 *)smi->addr)[smi->consumed] << shift;
+                        dat |= (u64)((u8 *)smi->addr)[smi->consumed] << shift;
                         bytes_xfered++;
                         smi->consumed++;
                         shift -= 8;