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bnxt_en: Fix race when modifying pause settings.

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[ Upstream commit 163e9ef636 ]

The driver was modified to not rely on rtnl lock to protect link
settings about 2 years ago.  The pause setting was missed when
making that change.  Fix it by acquiring link_lock mutex before
calling bnxt_hwrm_set_pause().

Fixes: e2dc9b6e38 ("bnxt_en: Don't use rtnl lock to protect link change logic in workqueue.")
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Vasundhara Volam
2020-07-11 20:48:23 -04:00
committed by Chris
parent 46bc4677a9
commit cd07cb5e17
1 changed files with 4 additions and 1 deletions
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5
drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c
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@@ -1023,8 +1023,11 @@ static int bnxt_set_pauseparam(struct net_device *dev,
if (epause->tx_pause)
link_info->req_flow_ctrl |= BNXT_LINK_PAUSE_TX;
if (netif_running(dev))
if (netif_running(dev)) {
mutex_lock(&bp->link_lock);
rc = bnxt_hwrm_set_pause(bp);
mutex_unlock(&bp->link_lock);
}
return rc;
}