igb: Clarify idleslope config constraints
authorJesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>
Fri, 10 Nov 2017 22:21:50 +0000 (14:21 -0800)
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>
Wed, 24 Jan 2018 20:27:48 +0000 (12:27 -0800)
commit0da6090ff70935d71f1c023def59e741f3ae322b
tree6d7ca4f60b1ab69bf3438d2239c6eecc40cb17d3
parentb701cacdbcfb65a5ba38d9d4121c12a0a4eaa01a
igb: Clarify idleslope config constraints

By design, the idleslope increments are restricted to 16.384kbps steps.
Add a comment to igb_main.c making that explicit and add one example
that illustrates the impact of that.

Signed-off-by: Jesus Sanchez-Palencia <jesus.sanchez-palencia@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
drivers/net/ethernet/intel/igb/igb_main.c