target/linux/brcm2708/patches-4.4/0449-gpu-drm-vc4_hdmi-add-missing-of_node_put-after-calli.patch

   1 From cededb2870ab15fcf79f063a83f5f37421e5bdfc Mon Sep 17 00:00:00 2001
   2 From: Peter Chen <peter.chen@nxp.com>
   3 Date: Tue, 5 Jul 2016 10:04:54 +0800
   4 Subject: [PATCH] gpu: drm: vc4_hdmi: add missing of_node_put after calling
   5  of_parse_phandle
   6
   7 of_node_put needs to be called when the device node which is got
   8 from of_parse_phandle has finished using.
   9
  10 Signed-off-by: Peter Chen <peter.chen@nxp.com>
  11 Reviewed-by: Eric Anholt <eric@anholt.net>
  12 (cherry picked from commit 027a697677b0d5ff211773596d96f84078ceda80)
  13 ---
  14  drivers/gpu/drm/vc4/vc4_hdmi.c | 13 +++++++------
  15  1 file changed, 7 insertions(+), 6 deletions(-)
  16
  17 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c
  18 +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
  19 @@ -467,12 +467,6 @@ static int vc4_hdmi_bind(struct device *
  20         if (IS_ERR(hdmi->hd_regs))
  21                 return PTR_ERR(hdmi->hd_regs);
  22
  23 -       ddc_node = of_parse_phandle(dev->of_node, "ddc", 0);
  24 -       if (!ddc_node) {
  25 -               DRM_ERROR("Failed to find ddc node in device tree\n");
  26 -               return -ENODEV;
  27 -       }
  28 -
  29         hdmi->pixel_clock = devm_clk_get(dev, "pixel");
  30         if (IS_ERR(hdmi->pixel_clock)) {
  31                 DRM_ERROR("Failed to get pixel clock\n");
  32 @@ -484,7 +478,14 @@ static int vc4_hdmi_bind(struct device *
  33                 return PTR_ERR(hdmi->hsm_clock);
  34         }
  35
  36 +       ddc_node = of_parse_phandle(dev->of_node, "ddc", 0);
  37 +       if (!ddc_node) {
  38 +               DRM_ERROR("Failed to find ddc node in device tree\n");
  39 +               return -ENODEV;
  40 +       }
  41 +
  42         hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node);
  43 +       of_node_put(ddc_node);
  44         if (!hdmi->ddc) {
  45                 DRM_DEBUG("Failed to get ddc i2c adapter by node\n");
  46                 return -EPROBE_DEFER;