lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

bnx2x: protect sequence increment with mutex

Browse Source 
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>
This commit is contained in:
Dmitry Kravkov
2011-05-25 04:55:51 +00:00
committed by David S. Miller
parent 07bd8df5df
commit a5971d43ef
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/bnx2x/bnx2x_main.c
View File

@@ -2222,12 +2222,13 @@ static void bnx2x_pmf_update(struct bnx2x *bp)
u32 bnx2x_fw_command(struct bnx2x *bp, u32 command, u32 param) u32 bnx2x_fw_command(struct bnx2x *bp, u32 command, u32 param)
{ {
int mb_idx = BP_FW_MB_IDX(bp); int mb_idx = BP_FW_MB_IDX(bp);
u32 seq = ++bp->fw_seq; u32 seq;
u32 rc = 0; u32 rc = 0;
u32 cnt = 1; u32 cnt = 1;
u8 delay = CHIP_REV_IS_SLOW(bp) ? 100 : 10; u8 delay = CHIP_REV_IS_SLOW(bp) ? 100 : 10;
mutex_lock(&bp->fw_mb_mutex); 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_param, param);
SHMEM_WR(bp, func_mb[mb_idx].drv_mb_header, (command | seq)); SHMEM_WR(bp, func_mb[mb_idx].drv_mb_header, (command | seq));