i40e: Increase delay to 1 s after global EMP reset

BugLink: https://bugs.launchpad.net/bugs/1959879
commit 9b13bd53134c9ddd544a790125199fdbdb505e67 upstream.

Recently simplified i40e_rebuild causes that FW sometimes
is not ready after NVM update, the ping does not return.

Increase the delay in case of EMP reset.
Old delay of 300 ms was introduced for specific cards for 710 series.
Now it works for all the cards and delay was increased.

Fixes: 1fa51a650e1d ("i40e: Add delay after EMP reset for firmware to recover")
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Paolo Pisati <paolo.pisati@canonical.com>

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index cc1cefdd4cdaccf3e58876aa11a55b233caac548..0530c20f679f7be6dcab4056ba01cebf43e64a28 100644 (file)
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -10574,15 +10574,9 @@ static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired)
        }
        i40e_get_oem_version(&pf->hw);
 
-       if (test_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state) &&
-           ((hw->aq.fw_maj_ver == 4 && hw->aq.fw_min_ver <= 33) ||
-            hw->aq.fw_maj_ver < 4) && hw->mac.type == I40E_MAC_XL710) {
-               /* The following delay is necessary for 4.33 firmware and older
-                * to recover after EMP reset. 200 ms should suffice but we
-                * put here 300 ms to be sure that FW is ready to operate
-                * after reset.
-                */
-               mdelay(300);
+       if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state)) {
+               /* The following delay is necessary for firmware update. */
+               mdelay(1000);
        }
 
        /* re-verify the eeprom if we just had an EMP reset */