linux-kernel - [PATCH v2 18/30] panel/lincolntech-lcd197: Use refcounted allocation in place of devm

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Message-Id: <20250403-b4-drm_panel_mass_convert_part2-v2-18-260c8a44c56b@redhat.com>
Date: Thu, 03 Apr 2025 10:16:25 -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>, 
 Icenowy Zheng <icenowy@...c.io>, Jagan Teki <jagan@...rulasolutions.com>, 
 Ondrej Jirman <megi@....cz>, Javier Martinez Canillas <javierm@...hat.com>, 
 Michael Trimarchi <michael@...rulasolutions.com>, 
 Michael Walle <mwalle@...nel.org>, Jagan Teki <jagan@...eble.ai>, 
 Guido Günther <agx@...xcpu.org>, 
 Purism Kernel Team <kernel@...i.sm>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Jianhua Lu <lujianhua000@...il.com>, Stefan Mavrodiev <stefan@...mex.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Anusha Srivatsa <asrivats@...hat.com>
Subject: [PATCH v2 18/30] panel/lincolntech-lcd197: Use 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>
---
v2: none.
---
 drivers/gpu/drm/panel/panel-lincolntech-lcd197.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-lincolntech-lcd197.c b/drivers/gpu/drm/panel/panel-lincolntech-lcd197.c
index 032c542aab0f788e8a244721c838d9d740af98fb..54ad17704072213b00292df487a9f28cffd45f6c 100644
--- a/drivers/gpu/drm/panel/panel-lincolntech-lcd197.c
+++ b/drivers/gpu/drm/panel/panel-lincolntech-lcd197.c
@@ -190,9 +190,11 @@ static int lincoln_lcd197_panel_probe(struct mipi_dsi_device *dsi)
 	dsi->mode_flags = (MIPI_DSI_MODE_VIDEO |
 			   MIPI_DSI_MODE_VIDEO_BURST);
 
-	lcd = devm_kzalloc(&dsi->dev, sizeof(*lcd), GFP_KERNEL);
-	if (!lcd)
-		return -ENOMEM;
+	ctx = devm_drm_panel_alloc(dev, struct lincoln_lcd197_panel, panel,
+				   &lincoln_lcd197_panel_funcs,
+				   DRM_MODE_CONNECTOR_DSI);
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	mipi_dsi_set_drvdata(dsi, lcd);
 	lcd->dsi = dsi;
@@ -214,9 +216,6 @@ static int lincoln_lcd197_panel_probe(struct mipi_dsi_device *dsi)
 		return dev_err_probe(dev, PTR_ERR(lcd->reset_gpio),
 				     "failed to get reset gpio");
 
-	drm_panel_init(&lcd->panel, dev,
-		       &lincoln_lcd197_panel_funcs, DRM_MODE_CONNECTOR_DSI);
-
 	err = drm_panel_of_backlight(&lcd->panel);
 	if (err)
 		return err;

-- 
2.48.1