linux-kernel - [PATCH 12/14] drm/panel/himax-hx83102: Use refcounted allocation in place of devm

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Message-Id: <20250710-b4-driver-convert-last-part-july-v1-12-de73ba81b2f5@redhat.com>
Date: Thu, 10 Jul 2025 23:31:23 -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>, 
 Florian Fainelli <florian.fainelli@...adcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>, 
 Sumit Semwal <sumit.semwal@...aro.org>, 
 Casey Connolly <casey.connolly@...aro.org>, 
 Jerry Han <hanxu5@...qin.corp-partner.google.com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 linux-rpi-kernel@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
 Anusha Srivatsa <asrivats@...hat.com>
Subject: [PATCH 12/14] drm/panel/himax-hx83102: 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-himax-hx83102.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-himax-hx83102.c b/drivers/gpu/drm/panel/panel-himax-hx83102.c
index 66abfc44e424829e295f5848153d548176b9dda9..4c432d207634d2d976a9e7cb7744b1fefa10420d 100644
--- a/drivers/gpu/drm/panel/panel-himax-hx83102.c
+++ b/drivers/gpu/drm/panel/panel-himax-hx83102.c
@@ -989,8 +989,6 @@ static int hx83102_panel_add(struct hx83102 *ctx)
 
 	ctx->base.prepare_prev_first = true;
 
-	drm_panel_init(&ctx->base, dev, &hx83102_drm_funcs,
-		       DRM_MODE_CONNECTOR_DSI);
 	err = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation);
 	if (err < 0)
 		return dev_err_probe(dev, err, "failed to get orientation\n");
@@ -1013,9 +1011,11 @@ static int hx83102_probe(struct mipi_dsi_device *dsi)
 	int ret;
 	const struct hx83102_panel_desc *desc;
 
-	ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);
-	if (!ctx)
-		return -ENOMEM;
+	ctx = devm_drm_panel_alloc(&dsi->dev, __typeof(*ctx), base,
+				   &hx83102_drm_funcs, DRM_MODE_CONNECTOR_DSI);
+
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
 
 	desc = of_device_get_match_data(&dsi->dev);
 	dsi->lanes = 4;

-- 
2.48.1