1:  9c5e4b222fc6 ! 1:  00ec218d502a wifi: iwlegacy: unregister the LED if 3945 hardware registration fails
    @@ Metadata
      ## Commit message ##
         wifi: iwlegacy: unregister the LED if 3945 hardware registration fails
     
    -    If ieee80211_register_hw() fails during 3945 setup, later LED callbacks
    -    can access hardware and driver state that probe has already freed.
    +    If ieee80211_register_hw() fails during 3945 probe, the LED class device
    +    stays registered after probe frees the il_priv that embeds it. The next
    +    LED trigger registration, or a write to the LED's sysfs brightness file,
    +    then uses freed memory.
     
    -    il3945_setup_mac() registers the LED before the mac80211 hardware, but
    -    its registration error path does not call il_leds_exit(). The analogous
    -    4965 failure releases the driver and reaches its existing remove cleanup.
    +    il3945_setup_mac() registers the LED before the mac80211 hardware, and
    +    il3945_pci_probe() unwinds a registration failure without calling
    +    il_leds_exit(). 4965 already performs this cleanup: when
    +    il4965_mac_setup_register() fails, il4965_ucode_callback() calls
    +    device_release_driver(), and il4965_pci_remove() then calls
    +    il_leds_exit().
     
         Unregister the 3945 LED before unwinding a failed hardware registration.