pinctrl: microchip-sgpio: lock RMW access
Protect any RMW access to the registers by a spinlock. Fixes: 7e5ea974 ("pinctrl: pinctrl-microchip-sgpio: Add pinctrl driver for Microsemi Serial GPIO") Signed-off-by: Michael Walle <michael@walle.cc> Link: https://lore.kernel.org/r/20220226204507.2511633-2-michael@walle.ccSigned-off-by: Linus Walleij <linus.walleij@linaro.org>
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