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scsi: bnx2fc: fix incorrect cast to u64 on shift operation 

[ Upstream commit d0c0d90233 ]

Currently an int is being shifted and the result is being cast to a u64
which leads to undefined behaviour if the shift is more than 31 bits. Fix
this by casting the integer value 1 to u64 before the shift operation.

Addresses-Coverity: ("Bad shift operation")
Fixes: 7b59476912 ("[SCSI] bnx2fc: Handle REC_TOV error code from firmware")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Colin Ian King 2019-05-04 17:48:29 +01:00 committed by Greg Kroah-Hartman
parent a415e2db35
commit 4291e45df5
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/bnx2fc/bnx2fc_hwi.c
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@ -830,7 +830,7 @@ ret_err_rqe:
((u64)err_entry->data.err_warn_bitmap_hi << 32) |
(u64)err_entry->data.err_warn_bitmap_lo;
for (i = 0; i < BNX2FC_NUM_ERR_BITS; i++) {
if (err_warn_bit_map & (u64) (1 << i)) {
if (err_warn_bit_map & ((u64)1 << i)) {
err_warn = i;
break;
}