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commitd8e9806005upstream. Currently, the driver will attempt to set the mode on all devices with a center button, but some devices with a center button lack LEDs, and attempting to set the LEDs on devices without LEDs results in the kernel error message of the form: "leds input8::wacom-0.1: Setting an LED's brightness failed (-32)" This is because the generic codepath erroneously assumes that the BUTTON_CENTER usage indicates that the device has LEDs, the previously ignored TOUCH_RING_SETTING usage is a more accurate indication of the existence of LEDs on the device. Fixes:10c55cacb8("HID: wacom: generic: support LEDs") Cc: <stable@vger.kernel.org> # v4.11+ Signed-off-by: Aaron Armstrong Skomra <aaron.skomra@wacom.com> Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.