linux-kernel - Re: [PATCH] drm/ssd130x: Replace simple display helpers with the atomic helpers

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Message-ID: <54a22137-61f6-4af8-dd80-301d180e553a@redhat.com>
Date:   Mon, 5 Sep 2022 13:23:35 +0200
From:   Javier Martinez Canillas <javierm@...hat.com>
To:     Thomas Zimmermann <tzimmermann@...e.de>,
        linux-kernel@...r.kernel.org
Cc:     David Airlie <airlied@...ux.ie>, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] drm/ssd130x: Replace simple display helpers with the
 atomic helpers

On 9/5/22 13:00, Javier Martinez Canillas wrote:
>>> +static void ssd130x_encoder_helper_atomic_enable(struct drm_encoder *encoder,
>>> +						 struct drm_atomic_state *state)
>>> +{
>>> +	struct drm_device *drm = encoder->dev;
>>> +	struct ssd130x_device *ssd130x = drm_to_ssd130x(drm);
>>> +	int ret;
>>> +
>>> +	ret = ssd130x_power_on(ssd130x);
>>> +	if (ret)
>>>   		return;
>>>   
>>> -	ssd130x_fb_blit_rect(plane_state->fb, &shadow_plane_state->data[0], &dst_clip);
>>> +	ret = ssd130x_init(ssd130x);
>>> +	if (ret)
>>> +		return ssd130x_power_off(ssd130x);
>>
>> It returns a value from a function returning 'void'?
>>
> 
> Right. I'll fix it in v2 as well.
>  

Actually, this return statement is correct since ssd130x_power_off()
return value is 'void' as well.

-- 
Best regards,

Javier Martinez Canillas
Core Platforms
Red Hat