linux-kernel - [PATCH 1/6] drm/panel/visionox-g2647fb105: Use refcounted allocation in place of devm

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Message-Id: <20250708-b4-simple-panel-api-convert-july-v1-1-630902123ea1@redhat.com>
Date: Tue, 08 Jul 2025 15:35:13 -0500
From: Anusha Srivatsa <asrivats@...hat.com>
To: Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <jessica.zhang@....qualcomm.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>
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>, 
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Anusha Srivatsa <asrivats@...hat.com>
Subject: [PATCH 1/6] drm/panel/visionox-g2647fb105: Use refcounted
 allocation in place of devm_kzalloc()

Move to using the new API devm_drm_panel_alloc() to allocate the
panel. In the call to the new API, avoid using explicit type and use
__typeof() for more type safety.

Signed-off-by: Anusha Srivatsa <asrivats@...hat.com>
---
 drivers/gpu/drm/panel/panel-visionox-g2647fb105.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-visionox-g2647fb105.c b/drivers/gpu/drm/panel/panel-visionox-g2647fb105.c
index 413849f7b4dec97e9afa2df2843ef25898ed2549..eac6ec6e71d17285431b1cef3cb46d133f0648d9 100644
--- a/drivers/gpu/drm/panel/panel-visionox-g2647fb105.c
+++ b/drivers/gpu/drm/panel/panel-visionox-g2647fb105.c
@@ -207,9 +207,11 @@ static int visionox_g2647fb105_probe(struct mipi_dsi_device *dsi)
 	struct visionox_g2647fb105 *ctx;
 	int ret;
 
-	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
-	if (!ctx)
-		return -ENOMEM;
+	ctx = devm_drm_panel_alloc(dev, __typeof(*ctx), panel,
+				   &visionox_g2647fb105_panel_funcs,
+				   DRM_MODE_CONNECTOR_DSI);
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	ret = devm_regulator_bulk_get_const(dev,
 					    ARRAY_SIZE(visionox_g2647fb105_supplies),
@@ -233,8 +235,6 @@ static int visionox_g2647fb105_probe(struct mipi_dsi_device *dsi)
 
 	ctx->panel.prepare_prev_first = true;
 
-	drm_panel_init(&ctx->panel, dev, &visionox_g2647fb105_panel_funcs,
-		       DRM_MODE_CONNECTOR_DSI);
 	ctx->panel.prepare_prev_first = true;
 
 	ctx->panel.backlight = visionox_g2647fb105_create_backlight(dsi);

-- 
2.48.1