i40e: Correcting mutex usage in client code

Orabug: 24568124

Correcting the mutex usage, in client_subtask(), mutex_unlock has
to be called just before client_del_instance() since this function opens
and later closes the same mutex again.
Similarly in client_is_registered removing the mutex since it closes
the mutex twice.

This is a patch suggested by RDMA team.

Change-ID: Icce519c266e4221b8a2a72a15ba5bf01750e5852
Signed-off-by: Avinash Dayanand <avinash.dayanand@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
(cherry picked from commit 0d8ab54a4119880bb9cb4680da1f5e9068d0d333)
Signed-off-by: Brian Maly <brian.maly@oracle.com>
Signed-off-by: Dhaval Giani <dhaval.giani@oracle.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.c b/drivers/net/ethernet/intel/i40e/i40e_client.c
index 09a37cfcffd6956d27ecc49783d46040ae561f53..5404b32c9adf136753dc9af4be0b98a2f4a35a7a 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_client.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_client.c
@@ -576,6 +576,7 @@ void i40e_client_subtask(struct i40e_pf *pf)
                        set_bit(__I40E_CLIENT_INSTANCE_OPENED, &cdev->state);
                } else {
                        /* remove client instance */
+                       mutex_unlock(&i40e_client_instance_mutex);
                        i40e_client_del_instance(pf, client);
                        atomic_dec(&client->ref_cnt);
                        continue;