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path: root/drivers/gpu/drm/tegra/rgb.c
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Diffstat (limited to 'drivers/gpu/drm/tegra/rgb.c')
-rw-r--r--drivers/gpu/drm/tegra/rgb.c32
1 files changed, 26 insertions, 6 deletions
diff --git a/drivers/gpu/drm/tegra/rgb.c b/drivers/gpu/drm/tegra/rgb.c
index fc66bbd913b2..ff5a749710db 100644
--- a/drivers/gpu/drm/tegra/rgb.c
+++ b/drivers/gpu/drm/tegra/rgb.c
@@ -200,6 +200,11 @@ static const struct drm_encoder_helper_funcs tegra_rgb_encoder_helper_funcs = {
.atomic_check = tegra_rgb_encoder_atomic_check,
};
+static void tegra_dc_of_node_put(void *data)
+{
+ of_node_put(data);
+}
+
int tegra_dc_rgb_probe(struct tegra_dc *dc)
{
struct device_node *np;
@@ -207,7 +212,14 @@ int tegra_dc_rgb_probe(struct tegra_dc *dc)
int err;
np = of_get_child_by_name(dc->dev->of_node, "rgb");
- if (!np || !of_device_is_available(np))
+ if (!np)
+ return -ENODEV;
+
+ err = devm_add_action_or_reset(dc->dev, tegra_dc_of_node_put, np);
+ if (err < 0)
+ return err;
+
+ if (!of_device_is_available(np))
return -ENODEV;
rgb = devm_kzalloc(dc->dev, sizeof(*rgb), GFP_KERNEL);
@@ -225,26 +237,28 @@ int tegra_dc_rgb_probe(struct tegra_dc *dc)
rgb->clk = devm_clk_get(dc->dev, NULL);
if (IS_ERR(rgb->clk)) {
dev_err(dc->dev, "failed to get clock\n");
- return PTR_ERR(rgb->clk);
+ err = PTR_ERR(rgb->clk);
+ goto remove;
}
rgb->clk_parent = devm_clk_get(dc->dev, "parent");
if (IS_ERR(rgb->clk_parent)) {
dev_err(dc->dev, "failed to get parent clock\n");
- return PTR_ERR(rgb->clk_parent);
+ err = PTR_ERR(rgb->clk_parent);
+ goto remove;
}
err = clk_set_parent(rgb->clk, rgb->clk_parent);
if (err < 0) {
dev_err(dc->dev, "failed to set parent clock: %d\n", err);
- return err;
+ goto remove;
}
rgb->pll_d_out0 = clk_get_sys(NULL, "pll_d_out0");
if (IS_ERR(rgb->pll_d_out0)) {
err = PTR_ERR(rgb->pll_d_out0);
dev_err(dc->dev, "failed to get pll_d_out0: %d\n", err);
- return err;
+ goto remove;
}
if (dc->soc->has_pll_d2_out0) {
@@ -252,13 +266,19 @@ int tegra_dc_rgb_probe(struct tegra_dc *dc)
if (IS_ERR(rgb->pll_d2_out0)) {
err = PTR_ERR(rgb->pll_d2_out0);
dev_err(dc->dev, "failed to get pll_d2_out0: %d\n", err);
- return err;
+ goto put_pll;
}
}
dc->rgb = &rgb->output;
return 0;
+
+put_pll:
+ clk_put(rgb->pll_d_out0);
+remove:
+ tegra_output_remove(&rgb->output);
+ return err;
}
void tegra_dc_rgb_remove(struct tegra_dc *dc)