linux-kernel - [PATCH 7/7] gpu: drm: vc4_hdmi: add missing of_node_put after calling of_parse

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Message-ID: <1467684294-20111-8-git-send-email-peter.chen@nxp.com>
Date:	Tue, 5 Jul 2016 10:04:54 +0800
From:	Peter Chen <peter.chen@....com>
To:	<airlied@...ux.ie>
CC:	<dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>,
	"Peter Chen" <peter.chen@....com>, Eric Anholt <eric@...olt.net>
Subject: [PATCH 7/7] gpu: drm: vc4_hdmi: add missing of_node_put after calling of_parse_phandle

of_node_put needs to be called when the device node which is got
from of_parse_phandle has finished using.

Cc: Eric Anholt <eric@...olt.net>
Signed-off-by: Peter Chen <peter.chen@....com>
---
 drivers/gpu/drm/vc4/vc4_hdmi.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index fd2644d..26b6b06 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -465,12 +465,6 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 	if (IS_ERR(hdmi->hd_regs))
 		return PTR_ERR(hdmi->hd_regs);
 
-	ddc_node = of_parse_phandle(dev->of_node, "ddc", 0);
-	if (!ddc_node) {
-		DRM_ERROR("Failed to find ddc node in device tree\n");
-		return -ENODEV;
-	}
-
 	hdmi->pixel_clock = devm_clk_get(dev, "pixel");
 	if (IS_ERR(hdmi->pixel_clock)) {
 		DRM_ERROR("Failed to get pixel clock\n");
@@ -482,7 +476,14 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 		return PTR_ERR(hdmi->hsm_clock);
 	}
 
+	ddc_node = of_parse_phandle(dev->of_node, "ddc", 0);
+	if (!ddc_node) {
+		DRM_ERROR("Failed to find ddc node in device tree\n");
+		return -ENODEV;
+	}
+
 	hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node);
+	of_node_put(ddc_node);
 	if (!hdmi->ddc) {
 		DRM_DEBUG("Failed to get ddc i2c adapter by node\n");
 		return -EPROBE_DEFER;
-- 
1.9.1