From 3a0f52928a0a06a7c4c735cd325ca646a1e40fae Mon Sep 17 00:00:00 2001 From: Anjali Singhai Jain Date: Wed, 27 Jul 2016 12:02:30 -0700 Subject: [PATCH] i40e: Fix a bug where a client close can be called before an open is complete The client->open call in this path was not protected with the client instance mutex, and hence the client->close can get initiated before the open completes. Change-Id: I0ed60c38868dd3f44966b6ed49a063d0e5b7edf5 Signed-off-by: Anjali Singhai Jain Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/i40e/i40e_client.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.c b/drivers/net/ethernet/intel/i40e/i40e_client.c index e6b9263f5c0d..8726269188f3 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_client.c +++ b/drivers/net/ethernet/intel/i40e/i40e_client.c @@ -541,6 +541,7 @@ void i40e_client_subtask(struct i40e_pf *pf) client->name, pf->hw.pf_id, pf->hw.bus.device, pf->hw.bus.func); + mutex_lock(&i40e_client_instance_mutex); /* Send an Open request to the client */ atomic_inc(&cdev->ref_cnt); if (client->ops && client->ops->open) @@ -554,6 +555,7 @@ void i40e_client_subtask(struct i40e_pf *pf) atomic_dec(&client->ref_cnt); continue; } + mutex_unlock(&i40e_client_instance_mutex); } mutex_unlock(&i40e_client_mutex); } -- GitLab