drm/imx/ipuv3: Convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is (mostly) ignored
and this typically results in resource leaks. To improve here there is a
quest to make the remove callback return void. In the first step of this
quest all drivers are converted to .remove_new() which already returns
void.

Trivially convert the ipuv3 imx drivers from always returning zero in
the remove callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230507162616.1368908-23-u.kleine-koenig@pengutronix.de

6 files changed, 12 insertions, 20 deletions

diff --git a/drivers/gpu/drm/imx/ipuv3/dw_hdmi-imx.c b/drivers/gpu/drm/imx/ipuv3/dw_hdmi-imx.c
index a2277a0d6d06..0006ea52b83c 100644
--- a/drivers/gpu/drm/imx/ipuv3/dw_hdmi-imx.c
+++ b/drivers/gpu/drm/imx/ipuv3/dw_hdmi-imx.c
@@ -255,19 +255,17 @@ static int dw_hdmi_imx_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int dw_hdmi_imx_remove(struct platform_device *pdev)
+static void dw_hdmi_imx_remove(struct platform_device *pdev)
 {
 	struct imx_hdmi *hdmi = platform_get_drvdata(pdev);
 
 	component_del(&pdev->dev, &dw_hdmi_imx_ops);
 	dw_hdmi_remove(hdmi->hdmi);
-
-	return 0;
 }
 
 static struct platform_driver dw_hdmi_imx_platform_driver = {
 	.probe  = dw_hdmi_imx_probe,
-	.remove = dw_hdmi_imx_remove,
+	.remove_new = dw_hdmi_imx_remove,
 	.driver = {
 		.name = "dwhdmi-imx",
 		.of_match_table = dw_hdmi_imx_dt_ids,
diff --git a/drivers/gpu/drm/imx/ipuv3/imx-drm-core.c b/drivers/gpu/drm/imx/ipuv3/imx-drm-core.c
index 4a866ac60fff..352fa31ab4ed 100644
--- a/drivers/gpu/drm/imx/ipuv3/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/ipuv3/imx-drm-core.c
@@ -292,10 +292,9 @@ static int imx_drm_platform_probe(struct platform_device *pdev)
 	return ret;
 }
 
-static int imx_drm_platform_remove(struct platform_device *pdev)
+static void imx_drm_platform_remove(struct platform_device *pdev)
 {
 	component_master_del(&pdev->dev, &imx_drm_ops);
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -324,7 +323,7 @@ MODULE_DEVICE_TABLE(of, imx_drm_dt_ids);
 
 static struct platform_driver imx_drm_pdrv = {
 	.probe		= imx_drm_platform_probe,
-	.remove		= imx_drm_platform_remove,
+	.remove_new	= imx_drm_platform_remove,
 	.driver		= {
 		.name	= "imx-drm",
 		.pm	= &imx_drm_pm_ops,
diff --git a/drivers/gpu/drm/imx/ipuv3/imx-ldb.c b/drivers/gpu/drm/imx/ipuv3/imx-ldb.c
index c45fc8f4744d..989eca32d325 100644
--- a/drivers/gpu/drm/imx/ipuv3/imx-ldb.c
+++ b/drivers/gpu/drm/imx/ipuv3/imx-ldb.c
@@ -737,7 +737,7 @@ free_child:
 	return ret;
 }
 
-static int imx_ldb_remove(struct platform_device *pdev)
+static void imx_ldb_remove(struct platform_device *pdev)
 {
 	struct imx_ldb *imx_ldb = platform_get_drvdata(pdev);
 	int i;
@@ -750,12 +750,11 @@ static int imx_ldb_remove(struct platform_device *pdev)
 	}
 
 	component_del(&pdev->dev, &imx_ldb_ops);
-	return 0;
 }
 
 static struct platform_driver imx_ldb_driver = {
 	.probe		= imx_ldb_probe,
-	.remove		= imx_ldb_remove,
+	.remove_new	= imx_ldb_remove,
 	.driver		= {
 		.of_match_table = imx_ldb_dt_ids,
 		.name	= DRIVER_NAME,
diff --git a/drivers/gpu/drm/imx/ipuv3/imx-tve.c b/drivers/gpu/drm/imx/ipuv3/imx-tve.c
index d6832f506322..b49bddb85535 100644
--- a/drivers/gpu/drm/imx/ipuv3/imx-tve.c
+++ b/drivers/gpu/drm/imx/ipuv3/imx-tve.c
@@ -645,10 +645,9 @@ static int imx_tve_probe(struct platform_device *pdev)
 	return component_add(dev, &imx_tve_ops);
 }
 
-static int imx_tve_remove(struct platform_device *pdev)
+static void imx_tve_remove(struct platform_device *pdev)
 {
 	component_del(&pdev->dev, &imx_tve_ops);
-	return 0;
 }
 
 static const struct of_device_id imx_tve_dt_ids[] = {
@@ -659,7 +658,7 @@ MODULE_DEVICE_TABLE(of, imx_tve_dt_ids);
 
 static struct platform_driver imx_tve_driver = {
 	.probe		= imx_tve_probe,
-	.remove		= imx_tve_remove,
+	.remove_new	= imx_tve_remove,
 	.driver		= {
 		.of_match_table = imx_tve_dt_ids,
 		.name	= "imx-tve",
diff --git a/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c
index 5f26090b0c98..8819e40d5e6e 100644
--- a/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3/ipuv3-crtc.c
@@ -441,10 +441,9 @@ static int ipu_drm_probe(struct platform_device *pdev)
 	return component_add(dev, &ipu_crtc_ops);
 }
 
-static int ipu_drm_remove(struct platform_device *pdev)
+static void ipu_drm_remove(struct platform_device *pdev)
 {
 	component_del(&pdev->dev, &ipu_crtc_ops);
-	return 0;
 }
 
 struct platform_driver ipu_drm_driver = {
@@ -452,5 +451,5 @@ struct platform_driver ipu_drm_driver = {
 		.name = "imx-ipuv3-crtc",
 	},
 	.probe = ipu_drm_probe,
-	.remove = ipu_drm_remove,
+	.remove_new = ipu_drm_remove,
 };
diff --git a/drivers/gpu/drm/imx/ipuv3/parallel-display.c b/drivers/gpu/drm/imx/ipuv3/parallel-display.c
index 0fa0b590830b..70349739dd89 100644
--- a/drivers/gpu/drm/imx/ipuv3/parallel-display.c
+++ b/drivers/gpu/drm/imx/ipuv3/parallel-display.c
@@ -353,11 +353,9 @@ static int imx_pd_probe(struct platform_device *pdev)
 	return component_add(dev, &imx_pd_ops);
 }
 
-static int imx_pd_remove(struct platform_device *pdev)
+static void imx_pd_remove(struct platform_device *pdev)
 {
 	component_del(&pdev->dev, &imx_pd_ops);
-
-	return 0;
 }
 
 static const struct of_device_id imx_pd_dt_ids[] = {
@@ -368,7 +366,7 @@ MODULE_DEVICE_TABLE(of, imx_pd_dt_ids);
 
 static struct platform_driver imx_pd_driver = {
 	.probe		= imx_pd_probe,
-	.remove		= imx_pd_remove,
+	.remove_new	= imx_pd_remove,
 	.driver		= {
 		.of_match_table = imx_pd_dt_ids,
 		.name	= "imx-parallel-display",