| Message ID | 1556112344-15305-1-git-send-email-fabien.dessenne@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | media: stm32-dcmi: return appropriate error codes during probe | expand |
Acked-by: Hugues Fruchet <hugues.fruchet@st.com> On 4/24/19 3:25 PM, Fabien Dessenne wrote: > During probe, return the provided errors value instead of -ENODEV. > This allows the driver to be deferred probed if needed. > > Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> > --- > drivers/media/platform/stm32/stm32-dcmi.c | 14 ++++++++------ > 1 file changed, 8 insertions(+), 6 deletions(-) > > diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c > index 906e71b..b9dad0a 100644 > --- a/drivers/media/platform/stm32/stm32-dcmi.c > +++ b/drivers/media/platform/stm32/stm32-dcmi.c > @@ -1672,7 +1672,7 @@ static int dcmi_probe(struct platform_device *pdev) > dcmi->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL); > if (IS_ERR(dcmi->rstc)) { > dev_err(&pdev->dev, "Could not get reset control\n"); > - return -ENODEV; > + return PTR_ERR(dcmi->rstc); > } > > /* Get bus characteristics from devicetree */ > @@ -1687,7 +1687,7 @@ static int dcmi_probe(struct platform_device *pdev) > of_node_put(np); > if (ret) { > dev_err(&pdev->dev, "Could not parse the endpoint\n"); > - return -ENODEV; > + return ret; > } > > if (ep.bus_type == V4L2_MBUS_CSI2_DPHY) { > @@ -1700,8 +1700,9 @@ static int dcmi_probe(struct platform_device *pdev) > > irq = platform_get_irq(pdev, 0); > if (irq <= 0) { > - dev_err(&pdev->dev, "Could not get irq\n"); > - return -ENODEV; > + if (irq != -EPROBE_DEFER) > + dev_err(&pdev->dev, "Could not get irq\n"); > + return irq; > } > > dcmi->res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > @@ -1721,12 +1722,13 @@ static int dcmi_probe(struct platform_device *pdev) > dev_name(&pdev->dev), dcmi); > if (ret) { > dev_err(&pdev->dev, "Unable to request irq %d\n", irq); > - return -ENODEV; > + return ret; > } > > mclk = devm_clk_get(&pdev->dev, "mclk"); > if (IS_ERR(mclk)) { > - dev_err(&pdev->dev, "Unable to get mclk\n"); > + if (PTR_ERR(mclk) != -EPROBE_DEFER) > + dev_err(&pdev->dev, "Unable to get mclk\n"); > return PTR_ERR(mclk); > } > >
diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c index 906e71b..b9dad0a 100644 --- a/drivers/media/platform/stm32/stm32-dcmi.c +++ b/drivers/media/platform/stm32/stm32-dcmi.c @@ -1672,7 +1672,7 @@ static int dcmi_probe(struct platform_device *pdev) dcmi->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL); if (IS_ERR(dcmi->rstc)) { dev_err(&pdev->dev, "Could not get reset control\n"); - return -ENODEV; + return PTR_ERR(dcmi->rstc); } /* Get bus characteristics from devicetree */ @@ -1687,7 +1687,7 @@ static int dcmi_probe(struct platform_device *pdev) of_node_put(np); if (ret) { dev_err(&pdev->dev, "Could not parse the endpoint\n"); - return -ENODEV; + return ret; } if (ep.bus_type == V4L2_MBUS_CSI2_DPHY) { @@ -1700,8 +1700,9 @@ static int dcmi_probe(struct platform_device *pdev) irq = platform_get_irq(pdev, 0); if (irq <= 0) { - dev_err(&pdev->dev, "Could not get irq\n"); - return -ENODEV; + if (irq != -EPROBE_DEFER) + dev_err(&pdev->dev, "Could not get irq\n"); + return irq; } dcmi->res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -1721,12 +1722,13 @@ static int dcmi_probe(struct platform_device *pdev) dev_name(&pdev->dev), dcmi); if (ret) { dev_err(&pdev->dev, "Unable to request irq %d\n", irq); - return -ENODEV; + return ret; } mclk = devm_clk_get(&pdev->dev, "mclk"); if (IS_ERR(mclk)) { - dev_err(&pdev->dev, "Unable to get mclk\n"); + if (PTR_ERR(mclk) != -EPROBE_DEFER) + dev_err(&pdev->dev, "Unable to get mclk\n"); return PTR_ERR(mclk); }
During probe, return the provided errors value instead of -ENODEV. This allows the driver to be deferred probed if needed. Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> --- drivers/media/platform/stm32/stm32-dcmi.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-)