Follow the advice of the Documentation/filesystems/sysfs.rst
and show() should only use sysfs_emit() or sysfs_emit_at()
when formatting the value to be returned to user space.
Signed-off-by: NXuezhi Zhang <zhangxuezhi1@coolpad.com>
Reviewed-by: NShuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20221014110606.599352-1-zhangxuezhi3@gmail.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>