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Commit 70874462 authored by Chunfeng Yun's avatar Chunfeng Yun Committed by Kishon Vijay Abraham I
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phy: core: Get a refcount to phy in devm_of_phy_get_by_index() 



On driver detach, devm_phy_release() will put a refcount to
the phy, so gets a refconut to it before return.

Signed-off-by: default avatarChunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent a8c24724

drivers/phy/phy-core.c

+15 −6
Original line number Diff line number Diff line
@@ -636,8 +636,9 @@ EXPORT_SYMBOL_GPL(devm_of_phy_get); 
 * @np: node containing the phy

 * @index: index of the phy

 *

 * Gets the phy using _of_phy_get(), and associates a device with it using

 * devres. On driver detach, release function is invoked on the devres data,

 * Gets the phy using _of_phy_get(), then gets a refcount to it,

 * and associates a device with it using devres. On driver detach,

 * release function is invoked on the devres data,

 * then, devres data is freed.

 *

 */
@@ -651,13 +652,21 @@ struct phy *devm_of_phy_get_by_index(struct device *dev, struct device_node *np, 
		return ERR_PTR(-ENOMEM);



	phy = _of_phy_get(np, index);

	if (!IS_ERR(phy)) {

		*ptr = phy;

		devres_add(dev, ptr);

	} else {

	if (IS_ERR(phy)) {

		devres_free(ptr);

		return phy;

	}



	if (!try_module_get(phy->ops->owner)) {

		devres_free(ptr);

		return ERR_PTR(-EPROBE_DEFER);

	}



	get_device(&phy->dev);



	*ptr = phy;

	devres_add(dev, ptr);



	return phy;

}

EXPORT_SYMBOL_GPL(devm_of_phy_get_by_index);