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Commit 3fcc7834 authored by Dan Carpenter's avatar Dan Carpenter Committed by Ulf Hansson
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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: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent fe79018a

drivers/mmc/host/cavium.c

+1 −1
Original line number Diff line number Diff line
@@ -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;