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Message-Id: <aca0d89cd8c1551a83b87ffab29fcd6e1d59a61c.1525067324.git.jan.kiszka@siemens.com> Date: Mon, 30 Apr 2018 07:48:42 +0200 From: Jan Kiszka <jan.kiszka@...mens.com> To: Bjorn Helgaas <bhelgaas@...gle.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org Subject: [PATCH v2 08/10] PCI: Deprecate of_pci_get_host_bridge_resources() From: Jan Kiszka <jan.kiszka@...mens.com> There are no in-tree users remaining, all are converted to the managed variant. And it is unlikely that any out-of-tree user got the resource management right as well. So deprecate the interface and push users to the managed version instead. To avoid raising a warning when exporting a deprecated symbol, wrap the API with an inline and export an internal name. Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com> --- drivers/pci/of.c | 23 ++--------------------- include/linux/of_pci.h | 36 ++++++++++++++++++++++++++++++++---- 2 files changed, 34 insertions(+), 25 deletions(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 5a88d46a41b7..ccf8c7544e10 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -351,33 +351,14 @@ static int __of_pci_get_host_bridge_resources(struct device *dev, return err; } -/** - * of_pci_get_host_bridge_resources() - Parse PCI host bridge resources from DT - * @dev_node: device node of the host bridge having the range property - * @busno: bus number associated with the bridge root bus - * @bus_max: maximum number of buses for this bridge - * @resources: list where the range of resources will be added after DT parsing - * @io_base: pointer to a variable that will contain on return the physical - * address for the start of the I/O range. Can be NULL if the caller doesn't - * expect I/O ranges to be present in the device tree. - * - * It is the caller's job to free the @resources list. - * - * This function will parse the "ranges" property of a PCI host bridge device - * node and setup the resource mapping based on its content. It is expected - * that the property conforms with the Power ePAPR document. - * - * It returns zero if the range parsing has been successful or a standard error - * value if it failed. - */ -int of_pci_get_host_bridge_resources(struct device_node *dev_node, +int __of_pci_get_host_bridge_resources_deprecated(struct device_node *dev_node, unsigned char busno, unsigned char bus_max, struct list_head *resources, resource_size_t *io_base) { return __of_pci_get_host_bridge_resources(NULL, dev_node, busno, bus_max, resources, io_base); } -EXPORT_SYMBOL_GPL(of_pci_get_host_bridge_resources); +EXPORT_SYMBOL_GPL(__of_pci_get_host_bridge_resources_deprecated); /** * of_pci_get_host_bridge_resources() - Resource-managed parsing of PCI host diff --git a/include/linux/of_pci.h b/include/linux/of_pci.h index 08b8f02426a5..c6408bd6f862 100644 --- a/include/linux/of_pci.h +++ b/include/linux/of_pci.h @@ -71,26 +71,54 @@ of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin) #endif #if defined(CONFIG_OF_ADDRESS) -int of_pci_get_host_bridge_resources(struct device_node *dev_node, +int __of_pci_get_host_bridge_resources_deprecated(struct device_node *dev_node, unsigned char busno, unsigned char bus_max, struct list_head *resources, resource_size_t *io_base); int devm_of_pci_get_host_bridge_resources(struct device *dev, unsigned char busno, unsigned char bus_max, struct list_head *resources, resource_size_t *io_base); #else -static inline int of_pci_get_host_bridge_resources(struct device_node *dev_node, +static inline int devm_of_pci_get_host_bridge_resources(struct device *dev, unsigned char busno, unsigned char bus_max, struct list_head *resources, resource_size_t *io_base) { return -EINVAL; } +#endif -static inline int devm_of_pci_get_host_bridge_resources(struct device *dev, +/** + * of_pci_get_host_bridge_resources() - Parse PCI host bridge resources from DT + * @dev_node: device node of the host bridge having the range property + * @busno: bus number associated with the bridge root bus + * @bus_max: maximum number of buses for this bridge + * @resources: list where the range of resources will be added after DT parsing + * @io_base: pointer to a variable that will contain on return the physical + * address for the start of the I/O range. Can be NULL if the caller doesn't + * expect I/O ranges to be present in the device tree. + * + * It is the caller's job to free the @resources list. + * + * This function will parse the "ranges" property of a PCI host bridge device + * node and setup the resource mapping based on its content. It is expected + * that the property conforms with the Power ePAPR document. + * + * It returns zero if the range parsing has been successful or a standard error + * value if it failed. + * + * Note: This function is deprecated and will eventually be removed. Use + * devm_of_pci_get_host_bridge_resources() instead. + */ +static inline int __deprecated of_pci_get_host_bridge_resources( + struct device_node *dev_node, unsigned char busno, unsigned char bus_max, struct list_head *resources, resource_size_t *io_base) { +#if defined(CONFIG_OF_ADDRESS) + return __of_pci_get_host_bridge_resources_deprecated(dev_node, busno, + bus_max, resources, io_base); +#else return -EINVAL; -} #endif +} #endif -- 2.13.6
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