[PATCH v6 07/10] drm/rockchip: inno_hdmi: Fix error handling path

Jeffy Chen
2017-10-19T03:48:09Z

Add missing error handling in bind().

Fixes: 412d4ae6b7a5 ("drm/rockchip: hdmi: add Innosilicon HDMI support")
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---

Changes in v6: None
Changes in v5:
Call the destroy hook in the error handling path like in unbind().
Update cleanup order in unbind().

drivers/gpu/drm/rockchip/inno_hdmi.c | 22 +++++++++++++++++-----
1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index ee584d87111f..9a96ff6b022b 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -851,8 +851,10 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,
}

irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- return irq;
+ if (irq < 0) {
+ ret = irq;
+ goto err_disable_clk;
+ }

inno_hdmi_reset(hdmi);

@@ -860,7 +862,7 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,
if (IS_ERR(hdmi->ddc)) {
ret = PTR_ERR(hdmi->ddc);
hdmi->ddc = NULL;
- return ret;
+ goto err_disable_clk;
}

/*
@@ -874,7 +876,7 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,

ret = inno_hdmi_register(drm, hdmi);
if (ret)
- return ret;
+ goto err_put_adapter;

dev_set_drvdata(dev, hdmi);

@@ -884,7 +886,17 @@ static int inno_hdmi_bind(struct device *dev, struct device *master,
ret = devm_request_threaded_irq(dev, irq, inno_hdmi_hardirq,
inno_hdmi_irq, IRQF_SHARED,
dev_name(dev), hdmi);
+ if (ret < 0)
+ goto err_cleanup_hdmi;

+ return 0;
+err_cleanup_hdmi:
+ hdmi->connector.funcs->destroy(&hdmi->connector);
+ hdmi->encoder.funcs->destroy(&hdmi->encoder);
+err_put_adapter:
+ i2c_put_adapter(hdmi->ddc);
+err_disable_clk:
+ clk_disable_unprepare(hdmi->pclk);
return ret;
}

@@ -896,8 +908,8 @@ static void inno_hdmi_unbind(struct device *dev, struct device *master,
hdmi->connector.funcs->destroy(&hdmi->connector);
hdmi->encoder.funcs->destroy(&hdmi->encoder);

- clk_disable_unprepare(hdmi->pclk);
i2c_put_adapter(hdmi->ddc);
+ clk_disable_unprepare(hdmi->pclk);
}

static const struct component_ops inno_hdmi_ops = {
--
2.11.0