Hi Andy, Thank you for your review. Changes since the previous submission are highlighted below. On Topstar U931 Notebooks, an issue prevents the WLAN toggle key from being properly managed by the Embedded Controller and successfully disconnect the adapter. A specific ACPI method allows to toggle the WLAN LED state regardless. These are barebone laptops, sold under quite a lot of brands and configurations, with different firmwares and so on. I can only say for sure that this issue is present for all the models sold under a specific brand, that's why I'm reluctant to enable this by default with a DMI check. Thus, the new `led_workaround` option registers this LED with the corresponding subsystem, making possible to use a software-based trigger (rfkill for instance to synchronize the LED with the softkill state). Thank you for your time, -- Guillaume Douézan-Grard Changes since v1: * leave devices names unchanged for ABI compatibility, * fix label names, * separate module authors definition, * add commit description to Patch 3. Guillaume Douézan-Grard (4): platform/x86: topstar-laptop: non-functional changes platform/x86: topstar-laptop: change to generic module platform/x86: topstar-laptop: add platform device platform/x86: topstar-laptop: add optional WLAN LED workaround drivers/platform/x86/Kconfig | 2 + drivers/platform/x86/topstar-laptop.c | 334 ++++++++++++++++++++++++++-------- 2 files changed, 265 insertions(+), 71 deletions(-) -- 2.14.3