Sean, On 06/23/2016 10:10 PM, Sean Paul wrote:
On Tue, Jun 14, 2016 at 7:46 AM, Yakir Yang <ykk@xxxxxxxxxxxxxx> wrote:Some boards don't need to declare a panel device node, like the display interface is DP monitors, so it's necessary to make the panel detect to an optional action. Signed-off-by: Yakir Yang <ykk@xxxxxxxxxxxxxx> Acked-by: Mark Yao <mark.yao@xxxxxxxxxxxxxx> --- Changes in v3: - Add the acked flag from Mark. Changes in v2: None drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 48 ++++++++++++------------- 1 file changed, 22 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c index bcd9ecc..da2e844 100644 --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c @@ -332,38 +332,34 @@ static int rockchip_dp_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *panel_node, *port, *endpoint; + struct drm_panel *panel = NULL; struct rockchip_dp_device *dp; - struct drm_panel *panel; port = of_graph_get_port_by_id(dev->of_node, 1); - if (!port) { - dev_err(dev, "can't find output port\n"); - return -EINVAL; - } - - endpoint = of_get_child_by_name(port, "endpoint"); - of_node_put(port); - if (!endpoint) { - dev_err(dev, "no output endpoint found\n"); - return -EINVAL; - } - - panel_node = of_graph_get_remote_port_parent(endpoint); - of_node_put(endpoint); - if (!panel_node) { - dev_err(dev, "no output node found\n"); - return -EINVAL; - } - - panel = of_drm_find_panel(panel_node); - if (!panel) { - DRM_ERROR("failed to find panel\n"); + if (port) { + endpoint = of_get_child_by_name(port, "endpoint"); + of_node_put(port); + if (!endpoint) { + dev_err(dev, "no output endpoint found\n"); + return -EINVAL; + } + + panel_node = of_graph_get_remote_port_parent(endpoint); + of_node_put(endpoint); + if (!panel_node) { + dev_err(dev, "no output node found\n"); + return -EINVAL; + } + + panel = of_drm_find_panel(panel_node); + if (!panel) { + DRM_ERROR("failed to find panel\n"); + of_node_put(panel_node); + return -EPROBE_DEFER; + } of_node_put(panel_node);Minor nit: Move of_node_put(panel_node) directly below of_drm_find_panel to avoid duplicating it in both error and normal paths (like you've done above).
Yep, done. Thanks, - Yakir
Sean- return -EPROBE_DEFER; } - of_node_put(panel_node); - dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL); if (!dp) return -ENOMEM; -- 1.9.1 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
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