e1000e: extend timeout for ethtool link test diagnostic

With some PHYs supported by this driver, link establishment can take a
little longer when connected to certain switches.  Extend the timeout to
reduce the number of false diagnostic failures, and cleanup a code style
issue in the same function.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/net/e1000e/ethtool.c b/drivers/net/e1000e/ethtool.c
index d4e51aa231b9..8e276dc4b848 100644
--- a/drivers/net/e1000e/ethtool.c
+++ b/drivers/net/e1000e/ethtool.c
@@ -1666,10 +1666,13 @@ static int e1000_link_test(struct e1000_adapter *adapter, u64 *data)
         } else {
                 hw->mac.ops.check_for_link(hw);
                 if (hw->mac.autoneg)
-                        msleep(4000);
+                        /*
+                         * On some Phy/switch combinations, link establishment
+                         * can take a few seconds more than expected.
+                         */
+                        msleep(5000);
 
-                if (!(er32(STATUS) &
-                      E1000_STATUS_LU))
+                if (!(er32(STATUS) & E1000_STATUS_LU))
                         *data = 1;
         }
         return *data;