linux-kernel - [PATCH 4.9 014/241] drm/sun4i: Set drm_crtc.port to the underlying TCONs output port node

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20180319180751.766649626@linuxfoundation.org>
Date:   Mon, 19 Mar 2018 19:04:39 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Chen-Yu Tsai <wens@...e.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.9 014/241] drm/sun4i: Set drm_crtc.port to the underlying TCONs output port node

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Chen-Yu Tsai <wens@...e.org>


[ Upstream commit 7544860733d158e3edbf309f27e79e258c8f66bd ]

The way drm_of_find_possible_crtcs works is it tries to match the
remote-endpoint of the given node's various endpoints to all the
crtc's .port field. Thus we need to set drm_crtc.port to the output
port node of the underlying TCON.

Signed-off-by: Chen-Yu Tsai <wens@...e.org>
Signed-off-by: Maxime Ripard <maxime.ripard@...e-electrons.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/sun4i/sun4i_crtc.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/gpu/drm/sun4i/sun4i_crtc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_crtc.c
@@ -19,6 +19,7 @@
 #include <linux/clk-provider.h>
 #include <linux/ioport.h>
 #include <linux/of_address.h>
+#include <linux/of_graph.h>
 #include <linux/of_irq.h>
 #include <linux/regmap.h>
 
@@ -136,5 +137,9 @@ struct sun4i_crtc *sun4i_crtc_init(struc
 
 	drm_crtc_helper_add(&scrtc->crtc, &sun4i_crtc_helper_funcs);
 
+	/* Set crtc.port to output port node of the tcon */
+	scrtc->crtc.port = of_graph_get_port_by_id(drv->tcon->dev->of_node,
+						   1);
+
 	return scrtc;
 }