iwlwifi: mvm: add use_ps-poll debugfs power option
By default, when uapsd is not used, the ucode uses null data packet to exit power-save and get then pending frames. However, some tests require the explicit usage of ps-poll. Allow setting use_ps_poll power option (through debugfs) to configure the ucode to use ps-poll instead. The ucode configuration is done by setting the advanced-pm flag while setting all the ACs to non-upasd mode. Signed-off-by: NEliad Peller <eliadx.peller@intel.com> Reviewed-by: NJohannes Berg <johannes.berg@intel.com> Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>
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