4.9-stable review patch. If anyone has any objections, please let me know.
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From: Benjamin Poirier bpoirier@suse.com
[ Upstream commit 4e7dc08e57c95673d2edaba8983c3de4dd1f65f5 ]
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 Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/intel/e1000e/ich8lan.c | 2 +- drivers/net/ethernet/intel/e1000e/mac.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/intel/e1000e/ich8lan.c +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c @@ -1600,7 +1600,7 @@ static s32 e1000_check_for_copper_link_i * we have already determined whether we have link or not. */ if (!mac->autoneg) - return -E1000_ERR_CONFIG; + return 1;
/* Auto-Neg is enabled. Auto Speed Detection takes care * of MAC speed/duplex configuration. So we only need to --- a/drivers/net/ethernet/intel/e1000e/mac.c +++ b/drivers/net/ethernet/intel/e1000e/mac.c @@ -450,7 +450,7 @@ s32 e1000e_check_for_copper_link(struct * we have already determined whether we have link or not. */ if (!mac->autoneg) - return -E1000_ERR_CONFIG; + return 1;
/* Auto-Neg is enabled. Auto Speed Detection takes care * of MAC speed/duplex configuration. So we only need to