From: Colin Ian King colin.king@canonical.com
[ Upstream commit d0c0d902339249c75da85fd9257a86cbb98dfaa5 ]
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: 7b594769120b ("[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 --- drivers/scsi/bnx2fc/bnx2fc_hwi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/bnx2fc/bnx2fc_hwi.c b/drivers/scsi/bnx2fc/bnx2fc_hwi.c index 26de61d65a4d..1bdff75ae903 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_hwi.c +++ b/drivers/scsi/bnx2fc/bnx2fc_hwi.c @@ -830,7 +830,7 @@ static void bnx2fc_process_unsol_compl(struct bnx2fc_rport *tgt, u16 wqe) ((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; }