octeontx2-pf: Send UP messages to VF only when VF is up.

[ Upstream commit dfcf6355f53b1796cf7fd50a4f27b18ee6a3497a ]

When PF sending link status messages to VF, it is possible
that by the time link_event_task work function is executed
VF might have brought down. Hence before sending VF link
status message check whether VF is up to receive it.

Fixes: ad513ed938c9 ("octeontx2-vf: Link event notification support")
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index f85d38fab3211eaaf3d8f47b17fa6ceb3f269fe2..b40bd0e467514848fee22f1e32f86cb4c9d129c3 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -3122,6 +3122,9 @@ static void otx2_vf_link_event_task(struct work_struct *work)
        vf_idx = config - config->pf->vf_configs;
        pf = config->pf;
 
+       if (config->intf_down)
+               return;
+
        mutex_lock(&pf->mbox.lock);
 
        dwork = &config->link_event_work;