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Chen Ni
7249271521
[ Upstream commit797cc011ae] The devm_gpiod_get_optional() function may return an ERR_PTR in case of genuine GPIO acquisition errors, not just NULL which indicates the legitimate absence of an optional GPIO. Add an IS_ERR() check after the call in sky81452_bl_parse_dt(). On error, return the error code to ensure proper failure handling rather than proceeding with invalid pointers. Fixes:e1915eec54("backlight: sky81452: Convert to GPIO descriptors") Signed-off-by: Chen Ni <nichen@iscas.ac.cn> Reviewed-by: Linus Walleij <linusw@kernel.org> Reviewed-by: Daniel Thompson (RISCstar) <danielt@kernel.org> Link: https://patch.msgid.link/20260203021625.578678-1-nichen@iscas.ac.cn Signed-off-by: Lee Jones <lee@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>