linux-kernel - [PATCH 02/10] panel/arm-versatile: Use the refcounted allocation in place of devm

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Message-Id: <20250401-b4-drm-panel-mass-driver-convert-v1-2-cdd7615e1f93@redhat.com>
Date: Tue, 01 Apr 2025 12:03:45 -0400
From: Anusha Srivatsa <asrivats@...hat.com>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <quic_jesszhan@...cinc.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Linus Walleij <linus.walleij@...aro.org>, Joel Selvaraj <jo@...amily.in>, 
 Douglas Anderson <dianders@...omium.org>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Anusha Srivatsa <asrivats@...hat.com>
Subject: [PATCH 02/10] panel/arm-versatile: Use the refcounted allocation
 in place of devm_kzalloc()

Move to using the new API devm_drm_panel_alloc() to allocate the
panel.

Signed-off-by: Anusha Srivatsa <asrivats@...hat.com>
---
 drivers/gpu/drm/panel/panel-arm-versatile.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-arm-versatile.c b/drivers/gpu/drm/panel/panel-arm-versatile.c
index 503ecea72c5eac6614ecb280a0669d64c9d85b90..ea5119018df47832bd6b2a859c602484b8c66b33 100644
--- a/drivers/gpu/drm/panel/panel-arm-versatile.c
+++ b/drivers/gpu/drm/panel/panel-arm-versatile.c
@@ -306,9 +306,11 @@ static int versatile_panel_probe(struct platform_device *pdev)
 		return PTR_ERR(map);
 	}
 
-	vpanel = devm_kzalloc(dev, sizeof(*vpanel), GFP_KERNEL);
-	if (!vpanel)
-		return -ENOMEM;
+	vpanel = devm_drm_panel_alloc(dev, struct versatile_panel, panel,
+				      &versatile_panel_drm_funcs,
+				      DRM_MODE_CONNECTOR_DPI);
+	if (IS_ERR(vpanel))
+		return PTR_ERR(vpanel);
 
 	ret = regmap_read(map, SYS_CLCD, &val);
 	if (ret) {
@@ -348,9 +350,6 @@ static int versatile_panel_probe(struct platform_device *pdev)
 			dev_info(dev, "panel mounted on IB2 daughterboard\n");
 	}
 
-	drm_panel_init(&vpanel->panel, dev, &versatile_panel_drm_funcs,
-		       DRM_MODE_CONNECTOR_DPI);
-
 	drm_panel_add(&vpanel->panel);
 
 	return 0;

-- 
2.48.1