diff options
| author | Sudarsana Reddy Kalluru <sudarsana.kalluru@cavium.com> | 2018-07-18 22:50:03 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-05 09:18:35 +0200 |
| commit | af130c7f1d432510034bdd10332188ec46dcc04c (patch) | |
| tree | d9da94d2e6b0616549cd8cd440efd039455e193d /drivers/net/ethernet/qlogic | |
| parent | 7193329df84d8d346585e22ea1b800b8fa177124 (diff) | |
qed: Fix possible race for the link state value.
[ Upstream commit 58874c7b246109d8efb2b0099d1aa296d6bfc3fa ]
There's a possible race where driver can read link status in mid-transition
and see that virtual-link is up yet speed is 0. Since in this
mid-transition we're guaranteed to see a mailbox from MFW soon, we can
afford to treat this as link down.
Fixes: cc875c2e ("qed: Add link support")
Signed-off-by: Sudarsana Reddy Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/ethernet/qlogic')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_mcp.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_mcp.c b/drivers/net/ethernet/qlogic/qed/qed_mcp.c index 20d048cdcb88..c898006abb32 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_mcp.c +++ b/drivers/net/ethernet/qlogic/qed/qed_mcp.c @@ -420,6 +420,7 @@ static void qed_mcp_handle_link_change(struct qed_hwfn *p_hwfn, break; default: p_link->speed = 0; + p_link->link_up = 0; } /* Correct speed according to bandwidth allocation */ |