bnx2x: protect sequence increment with mutex

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/bnx2x/bnx2x_main.c b/drivers/net/bnx2x/bnx2x_main.c
index a97d9be331d1..4b70311a11ef 100644
--- a/drivers/net/bnx2x/bnx2x_main.c
+++ b/drivers/net/bnx2x/bnx2x_main.c
@@ -2222,12 +2222,13 @@ static void bnx2x_pmf_update(struct bnx2x *bp)
 u32 bnx2x_fw_command(struct bnx2x *bp, u32 command, u32 param)
 {
         int mb_idx = BP_FW_MB_IDX(bp);
-        u32 seq = ++bp->fw_seq;
+        u32 seq;
         u32 rc = 0;
         u32 cnt = 1;
         u8 delay = CHIP_REV_IS_SLOW(bp) ? 100 : 10;
 
         mutex_lock(&bp->fw_mb_mutex);
+        seq = ++bp->fw_seq;
         SHMEM_WR(bp, func_mb[mb_idx].drv_mb_param, param);
         SHMEM_WR(bp, func_mb[mb_idx].drv_mb_header, (command | seq));