• Wey-Yi Guy's avatar
    iwlwifi: add function to reset/tune radio if needed · afbdd69a
    Wey-Yi Guy authored
    Adding "radio reset" function to help reset and stabilize the radio.
    During normal operation, sometime for unknown reason, radio encounter
    problem and can not recover by itself; the best way to
    recover from it is to reset and re-tune the radio. Currently, there is
    no RF reset command available, but since radio will get reset when
    switching channel, use internal hw scan request to force radio
    reset and get back to normal operation state.
    The internal hw scan will only perform passive scan on the first
    available channel (not the channel being used) in associated state. The
    request should be ignored if already performing scan operation or STA is
    not in associated state.
    Also include an "internal_scan" debugfs file to help trigger the
    internal scan from user mode.
    Signed-off-by: default avatarWey-Yi Guy <wey-yi.w.guy@intel.com>
    Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>