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bnxt_en: Fix RTNL lock usage on bnxt_get_port_module_status().

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bnxt_get_port_module_status() calls bnxt_update_link() which expects
RTNL to be held.  In bnxt_sp_task() that does not hold RTNL, we need to
call it with a prior call to bnxt_rtnl_lock_sp() and the call needs to
be moved to the end of bnxt_sp_task().

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2017-01-25 02:55:09 -05:00 committed by David S. Miller
parent 0eaa24b971
commit 90c694bb71
1 changed files with 6 additions and 3 deletions
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9
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -6259,9 +6259,6 @@ static void bnxt_sp_task(struct work_struct *work)
bnxt_hwrm_tunnel_dst_port_free(
bp, TUNNEL_DST_PORT_FREE_REQ_TUNNEL_TYPE_GENEVE);
}
if (test_and_clear_bit(BNXT_HWRM_PORT_MODULE_SP_EVENT, &bp->sp_event))
bnxt_get_port_module_status(bp);
if (test_and_clear_bit(BNXT_PERIODIC_STATS_SP_EVENT, &bp->sp_event))
bnxt_hwrm_port_qstats(bp);
@ -6283,6 +6280,12 @@ static void bnxt_sp_task(struct work_struct *work)
netdev_err(bp->dev, "SP task can't update link (rc: %x)\n",
rc);
}
if (test_and_clear_bit(BNXT_HWRM_PORT_MODULE_SP_EVENT, &bp->sp_event)) {
bnxt_rtnl_lock_sp(bp);
if (test_bit(BNXT_STATE_OPEN, &bp->state))
bnxt_get_port_module_status(bp);
bnxt_rtnl_unlock_sp(bp);
}
if (test_and_clear_bit(BNXT_RESET_TASK_SP_EVENT, &bp->sp_event))
bnxt_reset(bp, false);