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driver core: platform: provide platform_device_set_of_node_from_dev()

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Provide a platform-specific variant of device_set_of_node_from_dev(). In
addition to bumping the reference count of the OF node being assigned,
it also assigns the fwnode of the platform device.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260706-pdev-fwnode-ref-v3-4-1ff028e33779@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bartosz Golaszewski
2026-07-06 14:44:16 +02:00
committed by Greg Kroah-Hartman
parent 8877c06885
commit 5b84ef0b02
2 changed files with 18 additions and 0 deletions
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16
drivers/base/platform.c
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@@ -730,6 +730,22 @@ void platform_device_set_fwnode(struct platform_device *pdev,
}
EXPORT_SYMBOL_GPL(platform_device_set_fwnode);
/**
* platform_device_set_of_node_from_dev - reuse OF node of another device
* @pdev: platform device to set the node for
* @dev2: device whose OF node to reuse
*
* Reuses the OF node of another device in this platform device while
* internally keeping track of reference counting.
*/
void platform_device_set_of_node_from_dev(struct platform_device *pdev,
const struct device *dev2)
{
device_set_of_node_from_dev(&pdev->dev, dev2);
pdev->dev.fwnode = of_fwnode_handle(pdev->dev.of_node);
}
EXPORT_SYMBOL_GPL(platform_device_set_of_node_from_dev);
/**
* platform_device_add - add a platform device to device hierarchy
* @pdev: platform device we're adding

2
include/linux/platform_device.h
View File

@@ -268,6 +268,8 @@ void platform_device_set_of_node(struct platform_device *pdev,
struct device_node *np);
void platform_device_set_fwnode(struct platform_device *pdev,
struct fwnode_handle *fwnode);
void platform_device_set_of_node_from_dev(struct platform_device *pdev,
const struct device *dev2);
extern int platform_device_add(struct platform_device *pdev);
extern void platform_device_del(struct platform_device *pdev);
extern void platform_device_put(struct platform_device *pdev);