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| author | Richard Alpe <richard.alpe@ericsson.com> | 2012-04-20 15:24:50 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2012-05-05 05:05:22 -0700 |
| commit | 1f56f45df9f19cdb87bb90020163046f09df9b45 (patch) | |
| tree | be6b3056c85a34fbc98af38389390d294df79c97 /drivers/net/ethernet/chelsio | |
| parent | 7b9f7e3500ae118bbd5833425e318647da8901f4 (diff) | |
| download | blackbird-op-linux-1f56f45df9f19cdb87bb90020163046f09df9b45.tar.gz blackbird-op-linux-1f56f45df9f19cdb87bb90020163046f09df9b45.zip | |
e1000e: clear REQ and GNT in EECD (82571 && 82572)
Clear the REQ and GNT bit in the eeprom control register (EECD).
This is required if the eeprom is to be accessed with auto read
EERD register.
After a cold reset this doesn't matter but if PBIST MAC test was
executed before booting, the register was left in a dirty state
(the 2 bits where set), which caused the read operation to time out
and returning 0.
Reference (page 312):
http://download.intel.com/design/network/manuals/316080.pdf
Reported-by: Aleksandar Igic <aleksandar.igic@dektech.com.au>
Signed-off-by: Richard Alpe <richard.alpe@ericsson.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/chelsio')
0 files changed, 0 insertions, 0 deletions
