/************************************************************************

 *      ieee80211 phy1: Failed to select rate control algorithm

 * 说明：

 *     MT7601u驱动rate control algorithm。

 *

 *                                      2017-9-15 深圳 龙华樟坑村 曾剑锋

 ***********************************************************************/

一、参考文档：

    . Failed to select rate control algorithm

        http://rt2x00.serialmonkey.com/phpBB-static/5/t-5066.html

    . Wireless not working with AR9285 wireless chip.

        https://forums.gentoo.org/viewtopic-p-7572800.html

二、解决办法：

    . 参考：

        CONFIG_MAC80211_RC_PID is not set

        CONFIG_MAC80211_RC_MINSTREL is not set

    . make menuconfig

        .config - Backports from "Linux" "v4.2.6-0-g1c02865" (backports "v4.2.6-1-0-g90

        ──────────────────────────────────────────────────────────────────────────────

          Backports from "Linux" "v4.2.6-0-g1c02865" (backports "v4.2.6-1-0-g90118c

         │  Arrow keys navigate the menu.  <Enter> selects submenus --->.          │

         │  Highlighted letters are hotkeys.  Pressing <Y> includes, <N> excludes, │

         │  <M> modularizes features.  Press <Esc><Esc> to exit, <?> for Help, </> │

         │  for Search.  Legend: [*] built-in  [ ] excluded  <M> module  < >       │

         │ ┌────^(-)─────────────────────────────────────────────────────────────┐ │

         │ │    [*]   cfg80211 wireless extensions compatibility                 │ │

         │ │    <M> Generic IEEE 802.11 Networking Stack (mac80211)              │ │

         │ │    [*] Minstrel                                                     │ │

         │ │    [*]   Minstrel .11n support                                   │ │

         │ │    [ ]     Minstrel .11ac support                                │ │

         │ │        Default rate control algorithm (Minstrel)  --->              │ │

         │ │    [*] Enable mac80211 mesh networking (pre-.11s) support        │ │

         │ │    [ ] Enable LED triggers                                          │ │

         │ │    [*] Export mac80211 internals in DebugFS                         │ │

         │ └────v(+)─────────────────────────────────────────────────────────────┘ │

         ├─────────────────────────────────────────────────────────────────────────┤

         │        <Select>    < Exit >    < Help >    < Save >    < Load >         │

         └─────────────────────────────────────────────────────────────────────────┘