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From: Marco Felsch <m.felsch@pengutronix.de>
To: p.zabel@pengutronix.de, airlied@linux.ie, daniel@ffwll.ch,
	shawnguo@kernel.org, stefan@agner.ch, rmk+kernel@armlinux.org.uk
Cc: kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org
Subject: [PATCH 03/17] drm/imx: parallel-display: move panel/bridge detection to fail early
Date: Thu, 27 Feb 2020 17:21:11 +0100	[thread overview]
Message-ID: <20200227162125.10450-4-m.felsch@pengutronix.de> (raw)
In-Reply-To: <20200227162125.10450-1-m.felsch@pengutronix.de>

We do some string parsing and string comparison in front of
drm_of_find_panel_or_bridge(). All this work is useless if the call
fails. Move drm_of_find_panel_or_bridge() infront of the parsing work to
fail early.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 drivers/gpu/drm/imx/parallel-display.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index 1f08fe8337d7..6ee028faa9a8 100644
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -200,6 +200,11 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 	if (!imxpd)
 		return -ENOMEM;
 
+	/* port@1 is the output port */
+	ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, &imxpd->bridge);
+	if (ret && ret != -ENODEV)
+		return ret;
+
 	edidp = of_get_property(np, "edid", &imxpd->edid_len);
 	if (edidp)
 		imxpd->edid = devm_kmemdup(dev, edidp, imxpd->edid_len,
@@ -218,10 +223,6 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 	}
 	imxpd->bus_format = bus_format;
 
-	/* port@1 is the output port */
-	ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, &imxpd->bridge);
-	if (ret && ret != -ENODEV)
-		return ret;
 
 	imxpd->dev = dev;
 
-- 
2.20.1


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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Marco Felsch <m.felsch@pengutronix.de>
To: p.zabel@pengutronix.de, airlied@linux.ie, daniel@ffwll.ch,
	shawnguo@kernel.org, stefan@agner.ch, rmk+kernel@armlinux.org.uk
Cc: kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org
Subject: [PATCH 03/17] drm/imx: parallel-display: move panel/bridge detection to fail early
Date: Thu, 27 Feb 2020 17:21:11 +0100	[thread overview]
Message-ID: <20200227162125.10450-4-m.felsch@pengutronix.de> (raw)
In-Reply-To: <20200227162125.10450-1-m.felsch@pengutronix.de>

We do some string parsing and string comparison in front of
drm_of_find_panel_or_bridge(). All this work is useless if the call
fails. Move drm_of_find_panel_or_bridge() infront of the parsing work to
fail early.

Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
---
 drivers/gpu/drm/imx/parallel-display.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index 1f08fe8337d7..6ee028faa9a8 100644
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -200,6 +200,11 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 	if (!imxpd)
 		return -ENOMEM;
 
+	/* port@1 is the output port */
+	ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, &imxpd->bridge);
+	if (ret && ret != -ENODEV)
+		return ret;
+
 	edidp = of_get_property(np, "edid", &imxpd->edid_len);
 	if (edidp)
 		imxpd->edid = devm_kmemdup(dev, edidp, imxpd->edid_len,
@@ -218,10 +223,6 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 	}
 	imxpd->bus_format = bus_format;
 
-	/* port@1 is the output port */
-	ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, &imxpd->bridge);
-	if (ret && ret != -ENODEV)
-		return ret;
 
 	imxpd->dev = dev;
 
-- 
2.20.1

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

  parent reply	other threads:[~2020-02-27 16:23 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-27 16:21 [PATCH 00/17] DRM: imx spring-cleaning Marco Felsch
2020-02-27 16:21 ` Marco Felsch
2020-02-27 16:21 ` [PATCH 01/17] drm/imx: drop useless best_encoder callback Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 02/17] drm/imx: parallel-display: fix edid memory leak Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` Marco Felsch [this message]
2020-02-27 16:21   ` [PATCH 03/17] drm/imx: parallel-display: move panel/bridge detection to fail early Marco Felsch
2020-02-27 16:21 ` [PATCH 04/17] drm/imx: parallel-display: detach panel within drm_encoder destroy Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 05/17] drm/imx: parallel-display: split encoder and decoder states Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 06/17] imx/drm: parallel-display: split attach function Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 07/17] drm/imx: tve: add regulator_disable devm_action Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 08/17] drm/imx: tve: split global state container Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 09/17] drm/imx: imx-ldb: remove useless enum Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 10/17] drm/imx: imx-ldb: fix edid memory leak Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 11/17] drm/imx: imx-ldb: release ldb-channel resources within encoder destroy Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 12/17] drm/imx: remove imx_drm_encoder_destroy helper Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 13/17] drm/imx: imx-ldb: split imx_ldb devres allocation context Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 14/17] drm/imx: imx-ldb: add ldb_is_dual helper Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 15/17] drm/imx: imx-ldb: split encoder and decoder states Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 16/17] drm/imx: imx-ldb: refactor imx_ldb_bind Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 16:21 ` [PATCH 17/17] drm/imx: fix drm_mode_config_cleanup race condition Marco Felsch
2020-02-27 16:21   ` Marco Felsch
2020-02-27 17:29   ` Daniel Vetter
2020-02-27 17:29     ` Daniel Vetter
2020-02-27 17:44     ` Lucas Stach
2020-02-27 17:44       ` Lucas Stach
2020-02-27 18:14       ` Daniel Vetter
2020-02-27 18:14         ` Daniel Vetter
2020-02-27 18:23         ` Marco Felsch
2020-02-27 18:23           ` Marco Felsch
2020-03-02 18:07         ` Philipp Zabel
2020-03-02 18:07           ` Philipp Zabel
2020-03-02 21:32           ` Daniel Vetter
2020-03-02 21:32             ` Daniel Vetter

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