e1000e: Fix check_for_link return value with autoneg off

commit 4e7dc08e57c95673d2edaba8983c3de4dd1f65f5 upstream.

When autoneg is off, the .check_for_link callback functions clear the
get_link_status flag and systematically return a "pseudo-error". This means
that the link is not detected as up until the next execution of the
e1000_watchdog_task() 2 seconds later.

Fixes: 19110cfbb34d ("e1000e: Separate signaling for link check/link up")
Signed-off-by: Benjamin Poirier <bpoirier@suse.com>
Acked-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
[bwh: Backported to 3.2: adjust filename, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c
index 72b994e..55895af 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c
+++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c
@@ -746,7 +746,7 @@ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw)
         * we have already determined whether we have link or not.
         */
        if (!mac->autoneg) {
-               ret_val = -E1000_ERR_CONFIG;
+               ret_val = 1;
                goto out;
        }
 

diff --git a/drivers/net/ethernet/intel/e1000e/lib.c b/drivers/net/ethernet/intel/e1000e/lib.c
index 8224a12..bfc80c3 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/lib.c
+++ b/drivers/net/ethernet/intel/e1000e/lib.c
@@ -478,10 +478,8 @@ s32 e1000e_check_for_copper_link(struct e1000_hw *hw)
         * If we are forcing speed/duplex, then we simply return since
         * we have already determined whether we have link or not.
         */
-       if (!mac->autoneg) {
-               ret_val = -E1000_ERR_CONFIG;
-               return ret_val;
-       }
+       if (!mac->autoneg)
+               return 1;
 
        /*
         * Auto-Neg is enabled.  Auto Speed Detection takes care