9b4d7b5c81
Use DEVICE_ATTR_RO() helper macro instead of DEVICE_ATTR(), which is simpler and more readable. Due to the name of the read function of the sysfs attribute is normalized, there is a natural association. Link: https://lore.kernel.org/linux-media/20210603071009.11438-1-thunder.leizhen@huawei.com Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>