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Subject[PATCH v5 4/4] base/platform: Remove code duplication
Date
Failure path of platform_device_add was almost the same as
platform_device_del. Refactor same code in a function.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
---
drivers/base/platform.c | 60 +++++++++++++++++++++----------------------------
1 file changed, 25 insertions(+), 35 deletions(-)

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 5a29387e5ff6..cba8e0e83bfc 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -298,6 +298,25 @@ int platform_device_add_data(struct platform_device *pdev, const void *data,
}
EXPORT_SYMBOL_GPL(platform_device_add_data);

+static void platform_device_cleanout(struct platform_device *pdev, int n_res)
+{
+ int i;
+
+ if (pdev->id_auto) {
+ ida_simple_remove(&platform_devid_ida, pdev->id);
+ pdev->id = PLATFORM_DEVID_AUTO;
+ }
+
+ for (i = 0; i < n_res; i++) {
+ struct resource *r = &pdev->resource[i];
+ unsigned long type = resource_type(r);
+
+ if ((type == IORESOURCE_MEM || type == IORESOURCE_IO) &&
+ r->parent)
+ release_resource(r);
+ }
+}
+
/**
* platform_device_add - add a platform device to device hierarchy
* @pdev: platform device we're adding
@@ -371,23 +390,8 @@ 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;
-
- /* Failure path */
- if (pdev->id_auto) {
- ida_simple_remove(&platform_devid_ida, pdev->id);
- pdev->id = PLATFORM_DEVID_AUTO;
- }
-
- while (--i >= 0) {
- struct resource *r = &pdev->resource[i];
- unsigned long type = resource_type(r);
-
- if ((type == IORESOURCE_MEM || type == IORESOURCE_IO) &&
- r->parent)
- release_resource(r);
- }
+ if (ret)
+ platform_device_cleanout(pdev, i);

return ret;
}
@@ -403,25 +407,11 @@ EXPORT_SYMBOL_GPL(platform_device_add);
*/
void platform_device_del(struct platform_device *pdev)
{
- int i;
-
- if (pdev) {
- device_del(&pdev->dev);
-
- if (pdev->id_auto) {
- ida_simple_remove(&platform_devid_ida, pdev->id);
- pdev->id = PLATFORM_DEVID_AUTO;
- }
-
- for (i = 0; i < pdev->num_resources; i++) {
- struct resource *r = &pdev->resource[i];
- unsigned long type = resource_type(r);
+ if (!pdev)
+ return;

- if ((type == IORESOURCE_MEM || type == IORESOURCE_IO) &&
- r->parent)
- release_resource(r);
- }
- }
+ device_del(&pdev->dev);
+ platform_device_cleanout(pdev, pdev->num_resources);
}
EXPORT_SYMBOL_GPL(platform_device_del);

--
2.1.4


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