[PATCH v2 1/11] drm: logicvc: Use devm_of_reserved_mem_device_init()

[Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>]

Switch to devm_of_reserved_mem_device_init() so the reserved memory
region is released automatically on probe failure or device unbind.
Replace all error paths that jumped to error_reserved_mem: with
error_early: since the manual cleanup label is no longer needed, and
remove the explicit of_reserved_mem_device_release() call in the remove
function.

Reviewed-by: Paul Kocialkowski <paulk@sys-base.io>
Acked-by: Paul Kocialkowski <paulk@sys-base.io>
Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
---
 drivers/gpu/drm/logicvc/logicvc_drm.c | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/logicvc/logicvc_drm.c b/drivers/gpu/drm/logicvc/logicvc_drm.c
index bbebf4fc7f51..d6dbe52ff0a9 100644
--- a/drivers/gpu/drm/logicvc/logicvc_drm.c
+++ b/drivers/gpu/drm/logicvc/logicvc_drm.c
@@ -306,7 +306,7 @@ static int logicvc_drm_probe(struct platform_device *pdev)
 	int irq;
 	int ret;
 
-	ret = of_reserved_mem_device_init(dev);
+	ret = devm_of_reserved_mem_device_init(dev);
 	if (ret && ret != -ENODEV) {
 		dev_err(dev, "Failed to init memory region\n");
 		goto error_early;
@@ -327,14 +327,14 @@ static int logicvc_drm_probe(struct platform_device *pdev)
 		ret = of_address_to_resource(of_node, 0, &res);
 		if (ret) {
 			dev_err(dev, "Failed to get resource from address\n");
-			goto error_reserved_mem;
+			goto error_early;
 		}
 
 		base = devm_ioremap_resource(dev, &res);
 		if (IS_ERR(base)) {
 			dev_err(dev, "Failed to map I/O base\n");
 			ret = PTR_ERR(base);
-			goto error_reserved_mem;
+			goto error_early;
 		}
 
 		logicvc_drm_regmap_config.max_register = resource_size(&res) -
@@ -345,21 +345,21 @@ static int logicvc_drm_probe(struct platform_device *pdev)
 		if (IS_ERR(regmap)) {
 			dev_err(dev, "Failed to create regmap for I/O\n");
 			ret = PTR_ERR(regmap);
-			goto error_reserved_mem;
+			goto error_early;
 		}
 	}
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0) {
 		ret = -ENODEV;
-		goto error_reserved_mem;
+		goto error_early;
 	}
 
 	logicvc = devm_drm_dev_alloc(dev, &logicvc_drm_driver,
 				     struct logicvc_drm, drm_dev);
 	if (IS_ERR(logicvc)) {
 		ret = PTR_ERR(logicvc);
-		goto error_reserved_mem;
+		goto error_early;
 	}
 
 	platform_set_drvdata(pdev, logicvc);
@@ -371,7 +371,7 @@ static int logicvc_drm_probe(struct platform_device *pdev)
 	caps = logicvc_drm_caps_match(logicvc);
 	if (!caps) {
 		ret = -EINVAL;
-		goto error_reserved_mem;
+		goto error_early;
 	}
 
 	logicvc->caps = caps;
@@ -382,7 +382,7 @@ static int logicvc_drm_probe(struct platform_device *pdev)
 	ret = logicvc_clocks_prepare(logicvc);
 	if (ret) {
 		drm_err(drm_dev, "Failed to prepare clocks\n");
-		goto error_reserved_mem;
+		goto error_early;
 	}
 
 	ret = devm_request_irq(dev, irq, logicvc_drm_irq_handler, 0,
@@ -450,9 +450,6 @@ static int logicvc_drm_probe(struct platform_device *pdev)
 error_clocks:
 	logicvc_clocks_unprepare(logicvc);
 
-error_reserved_mem:
-	of_reserved_mem_device_release(dev);
-
 error_early:
 	return ret;
 }
@@ -469,8 +466,6 @@ static void logicvc_drm_remove(struct platform_device *pdev)
 	logicvc_mode_fini(logicvc);
 
 	logicvc_clocks_unprepare(logicvc);
-
-	of_reserved_mem_device_release(dev);
 }
 
 static void logicvc_drm_shutdown(struct platform_device *pdev)
-- 
2.55.0