The current VKMS driver uses non-managed function to create encoders. It
is not an issue yet, but in order to support multiple devices easily,
convert this code to use drm and device managed helpers.

Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
---
 drivers/gpu/drm/vkms/vkms_output.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c
index 570823ecb28f589e6323036590ec05a2f633bc9b..ab9affa75b66ce9f00fe025052439405206144ec 100644
--- a/drivers/gpu/drm/vkms/vkms_output.c
+++ b/drivers/gpu/drm/vkms/vkms_output.c
@@ -13,10 +13,6 @@ static const struct drm_connector_funcs vkms_connector_funcs = {
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static const struct drm_encoder_funcs vkms_encoder_funcs = {
-	.destroy = drm_encoder_cleanup,
-};
-
 static int vkms_conn_get_modes(struct drm_connector *connector)
 {
 	int count;
@@ -84,8 +80,8 @@ int vkms_output_init(struct vkms_device *vkmsdev)
 
 	drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
 
-	ret = drm_encoder_init(dev, encoder, &vkms_encoder_funcs,
-			       DRM_MODE_ENCODER_VIRTUAL, NULL);
+	ret = drmm_encoder_init(dev, encoder, NULL,
+				DRM_MODE_ENCODER_VIRTUAL, NULL);
 	if (ret) {
 		DRM_ERROR("Failed to init encoder\n");
 		return ret;
@@ -95,7 +91,7 @@ int vkms_output_init(struct vkms_device *vkmsdev)
 	ret = drm_connector_attach_encoder(connector, encoder);
 	if (ret) {
 		DRM_ERROR("Failed to attach connector to encoder\n");
-		goto err_attach;
+		return ret;
 	}
 
 	if (vkmsdev->config->writeback) {
@@ -108,7 +104,5 @@ int vkms_output_init(struct vkms_device *vkmsdev)
 
 	return 0;
 
-err_attach:
-	drm_encoder_cleanup(encoder);
 	return ret;
 }

-- 
2.47.0

Hi Louis,

On 22/11/24 13:27, Louis Chauvet wrote:
> The current VKMS driver uses non-managed function to create encoders. It
> is not an issue yet, but in order to support multiple devices easily,
> convert this code to use drm and device managed helpers.
> 
> Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>

Reviewed-by: Maíra Canal <mcanal@igalia.com>

Best Regards,
- Maíra

> ---
>   drivers/gpu/drm/vkms/vkms_output.c | 12 +++---------
>   1 file changed, 3 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c
> index 570823ecb28f589e6323036590ec05a2f633bc9b..ab9affa75b66ce9f00fe025052439405206144ec 100644
> --- a/drivers/gpu/drm/vkms/vkms_output.c
> +++ b/drivers/gpu/drm/vkms/vkms_output.c
> @@ -13,10 +13,6 @@ static const struct drm_connector_funcs vkms_connector_funcs = {
>   	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
>   };
>   
> -static const struct drm_encoder_funcs vkms_encoder_funcs = {
> -	.destroy = drm_encoder_cleanup,
> -};
> -
>   static int vkms_conn_get_modes(struct drm_connector *connector)
>   {
>   	int count;
> @@ -84,8 +80,8 @@ int vkms_output_init(struct vkms_device *vkmsdev)
>   
>   	drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
>   
> -	ret = drm_encoder_init(dev, encoder, &vkms_encoder_funcs,
> -			       DRM_MODE_ENCODER_VIRTUAL, NULL);
> +	ret = drmm_encoder_init(dev, encoder, NULL,
> +				DRM_MODE_ENCODER_VIRTUAL, NULL);
>   	if (ret) {
>   		DRM_ERROR("Failed to init encoder\n");
>   		return ret;
> @@ -95,7 +91,7 @@ int vkms_output_init(struct vkms_device *vkmsdev)
>   	ret = drm_connector_attach_encoder(connector, encoder);
>   	if (ret) {
>   		DRM_ERROR("Failed to attach connector to encoder\n");
> -		goto err_attach;
> +		return ret;
>   	}
>   
>   	if (vkmsdev->config->writeback) {
> @@ -108,7 +104,5 @@ int vkms_output_init(struct vkms_device *vkmsdev)
>   
>   	return 0;
>   
> -err_attach:
> -	drm_encoder_cleanup(encoder);
>   	return ret;
>   }
> 

On Fri, 22 Nov 2024 17:27:57 +0100, Louis Chauvet wrote:
> The current VKMS driver uses non-managed function to create encoders. It
> is not an issue yet, but in order to support multiple devices easily,
> convert this code to use drm and device managed helpers.
> 
> Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
> 
> [ ... ]

Reviewed-by: Maxime Ripard <mripard@kernel.org>

Thanks!
Maxime