Re: [PATCH] gma500: clean up an excessive and confusing helper

From: Patrik Jakobsson
Date: Mon Feb 01 2016 - 03:12:39 EST


On Fri, Jan 29, 2016 at 8:37 PM, Alan <gnomes@xxxxxxxxxxxxxxxxxxx> wrote:
> From: Alan Cox <alan@xxxxxxxxxxxxxxx>
>
> This is a left over from the great clean ups in the past. It's confusing as
> it returns an int, yet has one caller that never uses it. The caller already
> has all the right private variables local so the entire function can be
> replaced by a simple if call.
>
> Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>

Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@xxxxxxxxx>

> ---
> drivers/gpu/drm/gma500/framebuffer.c | 20 ++++----------------
> 1 file changed, 4 insertions(+), 16 deletions(-)
>
> diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
> index cb95765..033d894 100644
> --- a/drivers/gpu/drm/gma500/framebuffer.c
> +++ b/drivers/gpu/drm/gma500/framebuffer.c
> @@ -674,29 +674,17 @@ static const struct drm_mode_config_funcs psb_mode_funcs = {
> .output_poll_changed = psbfb_output_poll_changed,
> };
>
> -static int psb_create_backlight_property(struct drm_device *dev)
> -{
> - struct drm_psb_private *dev_priv = dev->dev_private;
> - struct drm_property *backlight;
> -
> - if (dev_priv->backlight_property)
> - return 0;
> -
> - backlight = drm_property_create_range(dev, 0, "backlight", 0, 100);
> -
> - dev_priv->backlight_property = backlight;
> -
> - return 0;
> -}
> -
> static void psb_setup_outputs(struct drm_device *dev)
> {
> struct drm_psb_private *dev_priv = dev->dev_private;
> struct drm_connector *connector;
>
> drm_mode_create_scaling_mode_property(dev);
> - psb_create_backlight_property(dev);
>
> + /* It is ok for this to fail - we just don't get backlight control */
> + if (!dev_priv->backlight_property)
> + dev_priv->backlight_property = drm_property_create_range(dev, 0,
> + "backlight", 0, 100);
> dev_priv->ops->output_init(dev);
>
> list_for_each_entry(connector, &dev->mode_config.connector_list,
>