iwlwifi: use scan while idle
As idle is just a deep powersave mode for the device, it will easily scan while idle since that turns off powersave. This reduces the number of commands sent to the device when scanning. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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