Input: stmfts - acknowledge that setting brightness is a blocking call
We need to turn regulators on and off when switching brightness, and that may block, therefore we have to set stmfts_brightness_set() as LED's brightness_set_blocking() method. Fixes: 78bcac7b ("Input: add support for the STMicroelectronics FingerTip touchscreen") Acked-by: NAndi Shyti <andi@etezian.org> Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
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