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Message-Id: <1448524225-5489-6-git-send-email-zyw@rock-chips.com> Date: Thu, 26 Nov 2015 15:50:19 +0800 From: Chris Zhong <zyw@...k-chips.com> To: heiko@...ech.de, linux-rockchip@...ts.infradead.org, mark.yao@...k-chips.com, treding@...dia.com Cc: Chris Zhong <zyw@...k-chips.com>, David Airlie <airlied@...ux.ie>, dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org Subject: [PATCH v5 05/11] drm: bridge: allow some funcs to be optional Check the validity of post_disable/pre_enable in bridge->funcs before call them. Signed-off-by: Chris Zhong <zyw@...k-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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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