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In case of error, the function syscon_node_to_regmap() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Fixes: 25348160e9a4 ("video: ARM CLCD: add special panel hook for Versatiles") Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>