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[net-next,v2,10/10] i40e: initialize params before notifying of l2_param_changes

Message ID 20170327235210.28652-11-jeffrey.t.kirsher@intel.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Kirsher, Jeffrey T March 27, 2017, 11:52 p.m. UTC 
From: Jacob Keller <jacob.e.keller@intel.com>

Probably due to some mis-merging fix a bug associated with commits
d7ce6422d6e6 ("i40e: don't check params until after checking for client
instance", 2017-02-09) and 3140aa9a78c9 ("i40e: KISS the client
interface", 2017-03-14)

The first commit tried to move the initialization of the params
structure so that we didn't bother doing this if we didn't have a client
interface. You can already see that it looks fishy because of the
indentation. The second commit refactors a bunch of the interface, and
incorrectly drops the params initialization.

I believe what occurred is that internally the two patches were
re-ordered, and the merge conflicts as a result were performed
incorrectly.

Fix the use of an uninitialized variable by correctly initializing the
params variable via i40e_client_get_params().

Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---
 drivers/net/ethernet/intel/i40e/i40e_client.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/drivers/net/ethernet/intel/i40e/i40e_client.c b/drivers/net/ethernet/intel/i40e/i40e_client.c
index a9f0d22a7cf4..191028b1489b 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_client.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_client.c
@@ -147,6 +147,8 @@  void i40e_notify_client_of_l2_param_changes(struct i40e_vsi *vsi)
 		dev_dbg(&vsi->back->pdev->dev, "Client is not open, abort l2 param change\n");
 		return;
 	}
+	memset(&params, 0, sizeof(params));
+	i40e_client_get_params(vsi, &params);
 	memcpy(&cdev->lan_info.params, &params, sizeof(struct i40e_params));
 	cdev->client->ops->l2_param_change(&cdev->lan_info, cdev->client,
 					   &params);