[v3,15/16] drm/sprd: Convert to platform remove callback returning void

Commit Message

Uwe Kleine-König Nov. 2, 2023, 4:56 p.m. UTC

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 sprd drm drivers from always returning zero in the
remove callback to the void returning variant.

Reviewed-by: Thomas Zimmermann <[e-mail]>
Reviewed-by: Jyri Sarha <[e-mail]>
Signed-off-by: Uwe Kleine-König <[e-mail]>
---
 drivers/gpu/drm/sprd/sprd_dpu.c | 6 ++----
 drivers/gpu/drm/sprd/sprd_drm.c | 5 ++---
 drivers/gpu/drm/sprd/sprd_dsi.c | 6 ++----
 3 files changed, 6 insertions(+), 11 deletions(-)

Patch

diff --git a/drivers/gpu/drm/sprd/sprd_dpu.c b/drivers/gpu/drm/sprd/sprd_dpu.c
index 48183bbd0590..deb3bb96e2a8 100644
--- a/drivers/gpu/drm/sprd/sprd_dpu.c
+++ b/drivers/gpu/drm/sprd/sprd_dpu.c
@@ -859,16 +859,14 @@  static int sprd_dpu_probe(struct platform_device *pdev)
 	return component_add(&pdev->dev, &dpu_component_ops);
 }
 
-static int sprd_dpu_remove(struct platform_device *pdev)
+static void sprd_dpu_remove(struct platform_device *pdev)
 {
 	component_del(&pdev->dev, &dpu_component_ops);
-
-	return 0;
 }
 
 struct platform_driver sprd_dpu_driver = {
 	.probe = sprd_dpu_probe,
-	.remove = sprd_dpu_remove,
+	.remove_new = sprd_dpu_remove,
 	.driver = {
 		.name = "sprd-dpu-drv",
 		.of_match_table = dpu_match_table,
diff --git a/drivers/gpu/drm/sprd/sprd_drm.c b/drivers/gpu/drm/sprd/sprd_drm.c
index 0aa39156f2fa..a74cd0caf645 100644
--- a/drivers/gpu/drm/sprd/sprd_drm.c
+++ b/drivers/gpu/drm/sprd/sprd_drm.c
@@ -138,10 +138,9 @@  static int sprd_drm_probe(struct platform_device *pdev)
 	return drm_of_component_probe(&pdev->dev, component_compare_of, &drm_component_ops);
 }
 
-static int sprd_drm_remove(struct platform_device *pdev)
+static void sprd_drm_remove(struct platform_device *pdev)
 {
 	component_master_del(&pdev->dev, &drm_component_ops);
-	return 0;
 }
 
 static void sprd_drm_shutdown(struct platform_device *pdev)
@@ -164,7 +163,7 @@  MODULE_DEVICE_TABLE(of, drm_match_table);
 
 static struct platform_driver sprd_drm_driver = {
 	.probe = sprd_drm_probe,
-	.remove = sprd_drm_remove,
+	.remove_new = sprd_drm_remove,
 	.shutdown = sprd_drm_shutdown,
 	.driver = {
 		.name = "sprd-drm-drv",
diff --git a/drivers/gpu/drm/sprd/sprd_dsi.c b/drivers/gpu/drm/sprd/sprd_dsi.c
index d7b143a75601..0b69c140eab3 100644
--- a/drivers/gpu/drm/sprd/sprd_dsi.c
+++ b/drivers/gpu/drm/sprd/sprd_dsi.c
@@ -1051,18 +1051,16 @@  static int sprd_dsi_probe(struct platform_device *pdev)
 	return mipi_dsi_host_register(&dsi->host);
 }
 
-static int sprd_dsi_remove(struct platform_device *pdev)
+static void sprd_dsi_remove(struct platform_device *pdev)
 {
 	struct sprd_dsi *dsi = dev_get_drvdata(&pdev->dev);
 
 	mipi_dsi_host_unregister(&dsi->host);
-
-	return 0;
 }
 
 struct platform_driver sprd_dsi_driver = {
 	.probe = sprd_dsi_probe,
-	.remove = sprd_dsi_remove,
+	.remove_new = sprd_dsi_remove,
 	.driver = {
 		.name = "sprd-dsi-drv",
 		.of_match_table = dsi_match_table,