linux-kernel - [PATCH v2 29/30] panel/lcd-olinuxino: Use refcounted allocation in place of devm

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Message-Id: <20250403-b4-drm_panel_mass_convert_part2-v2-29-260c8a44c56b@redhat.com>
Date: Thu, 03 Apr 2025 10:16:36 -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 29/30] panel/lcd-olinuxino: 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-olimex-lcd-olinuxino.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-olimex-lcd-olinuxino.c b/drivers/gpu/drm/panel/panel-olimex-lcd-olinuxino.c
index 94ae8c8270b8fbdf47009dac6232ddf6885c2369..66f99982f360fe4445b0c0cbc1e57c4db4be5eda 100644
--- a/drivers/gpu/drm/panel/panel-olimex-lcd-olinuxino.c
+++ b/drivers/gpu/drm/panel/panel-olimex-lcd-olinuxino.c
@@ -175,9 +175,11 @@ static int lcd_olinuxino_probe(struct i2c_client *client)
 				     I2C_FUNC_SMBUS_READ_I2C_BLOCK))
 		return -ENODEV;
 
-	lcd = devm_kzalloc(dev, sizeof(*lcd), GFP_KERNEL);
-	if (!lcd)
-		return -ENOMEM;
+	lcd = devm_drm_panel_alloc(dev, struct lcd_olinuxino, panel,
+				   &lcd_olinuxino_funcs,
+				   DRM_MODE_CONNECTOR_DPI);
+	if (IS_ERR(lcd))
+		return PTR_ERR(lcd);
 
 	i2c_set_clientdata(client, lcd);
 	lcd->dev = dev;
@@ -234,9 +236,6 @@ static int lcd_olinuxino_probe(struct i2c_client *client)
 	if (IS_ERR(lcd->enable_gpio))
 		return PTR_ERR(lcd->enable_gpio);
 
-	drm_panel_init(&lcd->panel, dev, &lcd_olinuxino_funcs,
-		       DRM_MODE_CONNECTOR_DPI);
-
 	ret = drm_panel_of_backlight(&lcd->panel);
 	if (ret)
 		return ret;

-- 
2.48.1