This is a note to let you know that I've just added the patch titled
i40e: Fix overwriting flow control settings during driver loading
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
i40e-fix-overwriting-flow-control-settings-during-dr.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2791a3cd3fa8bf04aa87e20beea915138e7eb29d
Author: Mateusz Palczewski <mateusz.palczewski@xxxxxxxxx>
Date: Tue Nov 24 15:08:27 2020 +0000
i40e: Fix overwriting flow control settings during driver loading
[ Upstream commit 4cdb9f80dcd46aab3c0020b4a6920c22735c5d6e ]
During driver loading flow control settings were written to FW
using a variable which was always zero, since it was being set
only by ethtool. This behavior has been corrected and driver
no longer overwrites the default FW/NVM settings.
Fixes: 373149fc99a0 ("i40e: Decrease the scope of rtnl lock")
Signed-off-by: Dawid Lukwinski <dawid.lukwinski@xxxxxxxxx>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@xxxxxxxxx>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx>
Tested-by: Tony Brelinski <tonyx.brelinski@xxxxxxxxx>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index e41f7acc0e1fa..c63de06c98df2 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -9959,7 +9959,6 @@ static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired)
int old_recovery_mode_bit = test_bit(__I40E_RECOVERY_MODE, pf->state);
struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
struct i40e_hw *hw = &pf->hw;
- u8 set_fc_aq_fail = 0;
i40e_status ret;
u32 val;
int v;
@@ -10085,13 +10084,6 @@ static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired)
i40e_stat_str(&pf->hw, ret),
i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
- /* make sure our flow control settings are restored */
- ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
- if (ret)
- dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
- i40e_stat_str(&pf->hw, ret),
- i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
-
/* Rebuild the VSIs and VEBs that existed before reset.
* They are still in our local switch element arrays, so only
* need to rebuild the switch model in the HW.
@@ -14774,7 +14766,6 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
int err;
u32 val;
u32 i;
- u8 set_fc_aq_fail;
err = pci_enable_device_mem(pdev);
if (err)
@@ -15096,24 +15087,6 @@ static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
}
INIT_LIST_HEAD(&pf->vsi[pf->lan_vsi]->ch_list);
- /* Make sure flow control is set according to current settings */
- err = i40e_set_fc(hw, &set_fc_aq_fail, true);
- if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
- dev_dbg(&pf->pdev->dev,
- "Set fc with err %s aq_err %s on get_phy_cap\n",
- i40e_stat_str(hw, err),
- i40e_aq_str(hw, hw->aq.asq_last_status));
- if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
- dev_dbg(&pf->pdev->dev,
- "Set fc with err %s aq_err %s on set_phy_config\n",
- i40e_stat_str(hw, err),
- i40e_aq_str(hw, hw->aq.asq_last_status));
- if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
- dev_dbg(&pf->pdev->dev,
- "Set fc with err %s aq_err %s on get_link_info\n",
- i40e_stat_str(hw, err),
- i40e_aq_str(hw, hw->aq.asq_last_status));
-
/* if FDIR VSI was set up, start it now */
for (i = 0; i < pf->num_alloc_vsi; i++) {
if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
