iwlwifi: remove per-device debug level
There's no need for the per-device debug level that we expose in debugfs since the module parameter is writable in sysfs. At the same time, simplify code by changing iwl_get_debug_level(shrd) & IWL_DL_ISR) to iwl_have_debug_level(IWL_DL_ISR) Signed-off-by: NJohannes Berg <johannes.berg@intel.com> Signed-off-by: NWey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
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