Re: [PATCH 1/4] pwm_backlight: Fix PWM levels support in non DT case

On Tue, Jan 22, 2013 at 02:39:53PM +0100, Peter Ujfalusi wrote:

It is expected that board files would have:
static unsigned int bl_levels[] = { 0, 50, 100, 150, 200, 250, };

static struct platform_pwm_backlight_data bl_data = {
	.levels = bl_levels,
	.max_brightness = ARRAY_SIZE(bl_levels),
	.dft_brightness = 4,
	.pwm_period_ns = 7812500,
};

In this case the max_brightness would be out of range in the levels array.
Decrement the received max_brightness in every case (DT or non DT) when the
levels has been provided.

What's wrong with specifying .max_brightness = ARRAY_SIZE(bl_levels) - 1
instead?

Thierry