[PATCH 18/42] drm: kmb: Use devm_of_reserved_mem_device_init()

[Mukesh Ojha]

Use the devres-managed devm_of_reserved_mem_device_init() instead of
the manual of_reserved_mem_device_init()/of_reserved_mem_device_release()
pair, letting the device resource manager handle cleanup automatically.
Also simplify the IRQ error path since the release before init was a no-op.

Signed-off-by: Mukesh Ojha <mukesh.ojha at oss.qualcomm.com>
---
 drivers/gpu/drm/kmb/kmb_drv.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/kmb/kmb_drv.c b/drivers/gpu/drm/kmb/kmb_drv.c
index 7c2eb1152fc2..88fe377940f3 100644
--- a/drivers/gpu/drm/kmb/kmb_drv.c
+++ b/drivers/gpu/drm/kmb/kmb_drv.c
@@ -140,13 +140,12 @@ static int kmb_hw_init(struct drm_device *drm, unsigned long flags)
 	/* Allocate LCD interrupt resources */
 	irq_lcd = platform_get_irq(pdev, 0);
 	if (irq_lcd < 0) {
-		ret = irq_lcd;
 		drm_err(&kmb->drm, "irq_lcd not found");
-		goto setup_fail;
+		return irq_lcd;
 	}
 
 	/* Get the optional framebuffer memory resource */
-	ret = of_reserved_mem_device_init(drm->dev);
+	ret = devm_of_reserved_mem_device_init(drm->dev);
 	if (ret && ret != -ENODEV)
 		return ret;
 
@@ -155,11 +154,6 @@ static int kmb_hw_init(struct drm_device *drm, unsigned long flags)
 	kmb->irq_lcd = irq_lcd;
 
 	return 0;
-
- setup_fail:
-	of_reserved_mem_device_release(drm->dev);
-
-	return ret;
 }
 
 static const struct drm_mode_config_funcs kmb_mode_config_funcs = {
@@ -465,8 +459,6 @@ static void kmb_remove(struct platform_device *pdev)
 	pm_runtime_put_sync(drm->dev);
 	pm_runtime_disable(drm->dev);
 
-	of_reserved_mem_device_release(drm->dev);
-
 	/* Release clks */
 	kmb_display_clk_disable(kmb);
 
-- 
2.53.0