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Subject[PATCH v1 2/4] driver core: platform: Refactor error path in a couple places
Date
The usual pattern is to bail out on the error case. Besides that
one of the labels is redundant as we may return directly. Refactor
platform_device_add() and platform_dma_configure() accordingly.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/base/platform.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index d81f05c4fccd..2b8645911d51 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -678,7 +678,7 @@ int platform_device_add(struct platform_device *pdev)
*/
ret = ida_alloc(&platform_devid_ida, GFP_KERNEL);
if (ret < 0)
- goto err_out;
+ return ret;
pdev->id = ret;
pdev->id_auto = true;
dev_set_name(&pdev->dev, "%s.%d.auto", pdev->name, pdev->id);
@@ -712,8 +712,10 @@ int platform_device_add(struct platform_device *pdev)
dev_name(&pdev->dev), dev_name(pdev->dev.parent));

ret = device_add(&pdev->dev);
- if (ret == 0)
- return ret;
+ if (ret)
+ goto failed;
+
+ return 0;

failed:
if (pdev->id_auto) {
@@ -727,7 +729,6 @@ int platform_device_add(struct platform_device *pdev)
release_resource(r);
}

- err_out:
return ret;
}
EXPORT_SYMBOL_GPL(platform_device_add);
@@ -1453,12 +1454,12 @@ static int platform_dma_configure(struct device *dev)
attr = acpi_get_dma_attr(to_acpi_device_node(dev->fwnode));
ret = acpi_dma_configure(dev, attr);
}
+ if (ret || drv->driver_managed_dma)
+ return ret;

- if (!ret && !drv->driver_managed_dma) {
- ret = iommu_device_use_default_domain(dev);
- if (ret)
- arch_teardown_dma_ops(dev);
- }
+ ret = iommu_device_use_default_domain(dev);
+ if (ret)
+ arch_teardown_dma_ops(dev);

return ret;
}
--
2.40.0.1.gaa8946217a0b
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