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From: Chris Zhong <zyw@rock-chips.com>
To: heiko@sntech.de, linux-rockchip@lists.infradead.org,
	mark.yao@rock-chips.com, treding@nvidia.com
Cc: Chris Zhong <zyw@rock-chips.com>,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
Subject: [PATCH v5 05/11] drm: bridge: allow some funcs to be optional
Date: Thu, 26 Nov 2015 15:50:19 +0800	[thread overview]
Message-ID: <1448524225-5489-6-git-send-email-zyw@rock-chips.com> (raw)
In-Reply-To: <1448524225-5489-1-git-send-email-zyw@rock-chips.com>

Check the validity of post_disable/pre_enable in bridge->funcs before
call them.

Signed-off-by: Chris Zhong <zyw@rock-chips.com>
---

Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None

 drivers/gpu/drm/drm_bridge.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index 6b8f721..8f29330 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -223,7 +223,8 @@ void drm_bridge_post_disable(struct drm_bridge *bridge)
 	if (!bridge)
 		return;
 
-	bridge->funcs->post_disable(bridge);
+	if (bridge->funcs->post_disable)
+		bridge->funcs->post_disable(bridge);
 
 	drm_bridge_post_disable(bridge->next);
 }
@@ -273,7 +274,8 @@ void drm_bridge_pre_enable(struct drm_bridge *bridge)
 
 	drm_bridge_pre_enable(bridge->next);
 
-	bridge->funcs->pre_enable(bridge);
+	if (bridge->funcs->pre_enable)
+		bridge->funcs->pre_enable(bridge);
 }
 EXPORT_SYMBOL(drm_bridge_pre_enable);
 
-- 
2.6.3

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  parent reply	other threads:[~2015-11-26  7:50 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-11-26  7:50 [PATCH v5 0/11] Add mipi dsi support for rk3288 Chris Zhong
     [not found] ` <1448524225-5489-1-git-send-email-zyw-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2015-11-26  7:50   ` [PATCH v5 01/11] clk: rockchip: add id for mipidsi sclk on rk3288 Chris Zhong
     [not found]     ` <1448524225-5489-2-git-send-email-zyw-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
2015-11-26 13:57       ` Heiko Stübner
2015-11-26  7:50   ` [PATCH v5 06/11] Documentation: dt-bindings: Add bindings for DW MIPI DSI Chris Zhong
2015-11-26  7:50   ` [PATCH v5 10/11] ARM: dts: rockchip: add rk3288 mipi_dsi nodes Chris Zhong
2015-11-26  7:50 ` [PATCH v5 02/11] clk: rockchip: add mipidsi clocks on rk3288 Chris Zhong
2015-11-26 13:58   ` Heiko Stübner
2015-11-26  7:50 ` [PATCH v5 03/11] drm/rockchip: return a true clock rate to adjusted_mode Chris Zhong
2015-11-26  7:50 ` [PATCH v5 04/11] drm/dsi: Add a helper to get bits per pixel of MIPI DSI pixel format Chris Zhong
2015-11-26  7:50 ` Chris Zhong [this message]
2015-11-26  7:50 ` [PATCH v5 07/11] drm/bridge: Add Synopsys DesignWare MIPI DSI host controller driver Chris Zhong
2015-11-26  7:50 ` [PATCH v5 08/11] drm: rockchip: Support Synopsys DesignWare MIPI DSI host controller Chris Zhong
2015-11-26  7:50 ` [PATCH v5 09/11] Documentation: dt-bindings: Add bindings for rk3288 DW MIPI DSI driver Chris Zhong
2015-11-26  7:50 ` [PATCH v5 11/11] ARM: dts: rockchip: add support mipi panel tv080wum-nl0 for rk3288-evb Chris Zhong

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