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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>
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1 changed files with 2 additions and 1 deletions
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@ -2222,12 +2222,13 @@ static void bnx2x_pmf_update(struct bnx2x *bp)
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u32 bnx2x_fw_command(struct bnx2x *bp, u32 command, u32 param)
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u32 bnx2x_fw_command(struct bnx2x *bp, u32 command, u32 param)
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{
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{
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int mb_idx = BP_FW_MB_IDX(bp);
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int mb_idx = BP_FW_MB_IDX(bp);
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u32 seq = ++bp->fw_seq;
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u32 seq;
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u32 rc = 0;
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u32 rc = 0;
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u32 cnt = 1;
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u32 cnt = 1;
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u8 delay = CHIP_REV_IS_SLOW(bp) ? 100 : 10;
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u8 delay = CHIP_REV_IS_SLOW(bp) ? 100 : 10;
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mutex_lock(&bp->fw_mb_mutex);
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mutex_lock(&bp->fw_mb_mutex);
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seq = ++bp->fw_seq;
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SHMEM_WR(bp, func_mb[mb_idx].drv_mb_param, param);
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SHMEM_WR(bp, func_mb[mb_idx].drv_mb_param, param);
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SHMEM_WR(bp, func_mb[mb_idx].drv_mb_header, (command | seq));
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SHMEM_WR(bp, func_mb[mb_idx].drv_mb_header, (command | seq));
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