| commit | d0efa8f23a644f7cb7d1f8e78dd9a223efa412a3 | |
| author | Tushar Dave <tushar.n.dave@intel.com> | |
| Thu, 12 Jul 2012 08:56:56 +0000 (12 08:56 +0000) | ||
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | |
| Sat, 14 Jul 2012 07:43:27 +0000 (14 00:43 -0700) | ||
| tree | 6211ea45128d665f9489cada230fec0ef62da221 | treesnapshot (tar.gz zip) |
| parent | 7ac2908e4b2edaec60e9090ddb4d9ceb76c05e7d | commitdiff |
e1000e: Correct link check logic for 82571 serdes
SYNCH bit and IV bit of RXCW register are sticky. Before examining these bits,
RXCW should be read twice to filter out one-time false events and have correct
values for these bits. Incorrect values of these bits in link check logic can
cause weird link stability issues if auto-negotiation fails.
CC: stable <stable@vger.kernel.org> [2.6.38+]
Reported-by: Dean Nelson <dnelson@redhat.com>
Signed-off-by: Tushar Dave <tushar.n.dave@intel.com>
Reviewed-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>
SYNCH bit and IV bit of RXCW register are sticky. Before examining these bits,
RXCW should be read twice to filter out one-time false events and have correct
values for these bits. Incorrect values of these bits in link check logic can
cause weird link stability issues if auto-negotiation fails.
CC: stable <stable@vger.kernel.org> [2.6.38+]
Reported-by: Dean Nelson <dnelson@redhat.com>
Signed-off-by: Tushar Dave <tushar.n.dave@intel.com>
Reviewed-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>
| drivers/net/ethernet/intel/e1000e/82571.c | diffblobblamehistory |