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From: Luca Ceresoli <luca.ceresoli@bootlin.com>
To: Andrzej Hajda <andrzej.hajda@intel.com>,
	 Neil Armstrong <neil.armstrong@linaro.org>,
	Robert Foss <rfoss@kernel.org>,
	 Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
	 Jonas Karlman <jonas@kwiboo.se>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	 Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	 Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	 David Airlie <airlied@gmail.com>,
	Simona Vetter <simona@ffwll.ch>,  Marek Vasut <marex@denx.de>,
	Stefan Agner <stefan@agner.ch>,  Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	 Pengutronix Kernel Team <kernel@pengutronix.de>,
	 Fabio Estevam <festevam@gmail.com>,
	Inki Dae <inki.dae@samsung.com>,
	 Jagan Teki <jagan@amarulasolutions.com>,
	 Marek Szyprowski <m.szyprowski@samsung.com>
Cc: "Thomas Petazzoni" <thomas.petazzoni@bootlin.com>,
	"Anusha Srivatsa" <asrivats@redhat.com>,
	"Paul Kocialkowski" <paulk@sys-base.io>,
	"Dmitry Baryshkov" <lumag@kernel.org>,
	"Hervé Codina" <herve.codina@bootlin.com>,
	"Hui Pu" <Hui.Pu@gehealthcare.com>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
	"Luca Ceresoli" <luca.ceresoli@bootlin.com>
Subject: [PATCH v7 07/11] drm/mxsfb: put the bridge returned by drm_bridge_chain_get_first_bridge()
Date: Fri, 14 Mar 2025 11:31:20 +0100	[thread overview]
Message-ID: <20250314-drm-bridge-refcount-v7-7-152571f8c694@bootlin.com> (raw)
In-Reply-To: <20250314-drm-bridge-refcount-v7-0-152571f8c694@bootlin.com>

The bridge returned by drm_bridge_chain_get_first_bridge() is
refcounted. Put it when done. Use a scope-based free action to catch all
the code paths.

Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>

---

This patch was added in v7.
---
 drivers/gpu/drm/mxsfb/lcdif_kms.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/mxsfb/lcdif_kms.c b/drivers/gpu/drm/mxsfb/lcdif_kms.c
index dbd42cc1da87f82ef9cd4ccc70cdecbe56035174..21311cf5efee7d26c80316bffe80dd2bfed02238 100644
--- a/drivers/gpu/drm/mxsfb/lcdif_kms.c
+++ b/drivers/gpu/drm/mxsfb/lcdif_kms.c
@@ -433,7 +433,6 @@ static int lcdif_crtc_atomic_check(struct drm_crtc *crtc,
 	struct drm_connector *connector;
 	struct drm_encoder *encoder;
 	struct drm_bridge_state *bridge_state;
-	struct drm_bridge *bridge;
 	u32 bus_format, bus_flags;
 	bool format_set = false, flags_set = false;
 	int ret, i;
@@ -448,6 +447,8 @@ static int lcdif_crtc_atomic_check(struct drm_crtc *crtc,
 
 	/* Try to find consistent bus format and flags across first bridges. */
 	for_each_new_connector_in_state(state, connector, connector_state, i) {
+		struct drm_bridge *bridge __free(drm_bridge_put) = NULL;
+
 		if (!connector_state->crtc)
 			continue;
 

-- 
2.48.1



  parent reply	other threads:[~2025-03-14 10:45 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-14 10:31 [PATCH v7 00/11] drm/bridge: add devm_drm_bridge_alloc() with bridge refcount Luca Ceresoli
2025-03-14 10:31 ` [PATCH v7 01/11] drm/bridge: add devm_drm_bridge_alloc() Luca Ceresoli
2025-03-14 17:58   ` Maxime Ripard
2025-03-14 10:31 ` [PATCH v7 02/11] drm/bridge: add support for refcounting Luca Ceresoli
2025-03-14 18:04   ` Maxime Ripard
2025-03-17 14:56     ` Luca Ceresoli
2025-03-14 10:31 ` [PATCH v7 03/11] drm/bridge: get/put the bridge reference in drm_bridge_add/remove() Luca Ceresoli
2025-03-14 18:04   ` Maxime Ripard
2025-03-14 10:31 ` [PATCH v7 04/11] drm/bridge: get/put the bridge reference in drm_bridge_attach/detach() Luca Ceresoli
2025-03-14 18:05   ` Maxime Ripard
2025-03-14 10:31 ` [PATCH v7 05/11] drm/bridge: add a cleanup action for scope-based drm_bridge_put() invocation Luca Ceresoli
2025-03-14 18:08   ` Maxime Ripard
2025-03-17 14:57     ` Luca Ceresoli
2025-03-14 10:31 ` [PATCH v7 06/11] drm/bridge: get the bridge returned by drm_bridge_chain_get_first_bridge() Luca Ceresoli
2025-03-14 18:10   ` Maxime Ripard
2025-03-17 14:57     ` Luca Ceresoli
2025-03-14 10:31 ` Luca Ceresoli [this message]
2025-03-14 18:11   ` [PATCH v7 07/11] drm/mxsfb: put " Maxime Ripard
2025-03-14 10:31 ` [PATCH v7 08/11] drm/atomic-helper: " Luca Ceresoli
2025-03-14 18:12   ` Maxime Ripard
2025-03-14 10:31 ` [PATCH v7 09/11] drm/probe-helper: " Luca Ceresoli
2025-03-14 18:12   ` Maxime Ripard
2025-03-14 10:31 ` [PATCH v7 10/11] drm/bridge: ti-sn65dsi83: use dynamic lifetime management Luca Ceresoli
2025-03-14 18:17   ` Maxime Ripard
2025-03-14 10:31 ` [PATCH v7 11/11] drm/bridge: samsung-dsim: " Luca Ceresoli
2025-03-14 18:18   ` Maxime Ripard
2025-03-14 18:21 ` [PATCH v7 00/11] drm/bridge: add devm_drm_bridge_alloc() with bridge refcount Maxime Ripard
2025-03-17 14:56   ` Luca Ceresoli
2025-03-19 16:16     ` Maxime Ripard
2025-03-20  7:41       ` Luca Ceresoli

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