| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <35efe707d03c886f1ac1e0c9634810c9da59c88a.1525067324.git.jan.kiszka@siemens.com>
Date: Mon, 30 Apr 2018 07:48:37 +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 03/10] PCI: Factor out __of_pci_get_host_bridge_resources()
From: Jan Kiszka <jan.kiszka@...mens.com>
This will be needed for sharing the core logic between current
of_pci_get_host_bridge_resources() and upcoming
devm_of_pci_get_host_bridge_resources().
Already rename the dev parameter to dev_node in order to free the
namespace for a real device parameter.
No functional changes.
Signed-off-by: Jan Kiszka <jan.kiszka@...mens.com>
---
drivers/pci/of.c | 63 ++++++++++++++++++++++++++++----------------------
include/linux/of_pci.h | 4 ++--
2 files changed, 38 insertions(+), 29 deletions(-)
diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index a28355c273ae..375de447a58e 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -243,26 +243,8 @@ void of_pci_check_probe_only(void)
EXPORT_SYMBOL_GPL(of_pci_check_probe_only);
#if defined(CONFIG_OF_ADDRESS)
-/**
- * of_pci_get_host_bridge_resources - Parse PCI host bridge resources from DT
- * @dev: 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,
+static int __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)
{
@@ -281,15 +263,15 @@ int of_pci_get_host_bridge_resources(struct device_node *dev,
if (!bus_range)
return -ENOMEM;
- pr_info("host bridge %pOF ranges:\n", dev);
+ pr_info("host bridge %pOF ranges:\n", dev_node);
- err = of_pci_parse_bus_range(dev, bus_range);
+ err = of_pci_parse_bus_range(dev_node, bus_range);
if (err) {
bus_range->start = busno;
bus_range->end = bus_max;
bus_range->flags = IORESOURCE_BUS;
pr_info(" No bus range found for %pOF, using %pR\n",
- dev, bus_range);
+ dev_node, bus_range);
} else {
if (bus_range->end > bus_range->start + bus_max)
bus_range->end = bus_range->start + bus_max;
@@ -297,7 +279,7 @@ int of_pci_get_host_bridge_resources(struct device_node *dev,
pci_add_resource(resources, bus_range);
/* Check for ranges property */
- err = of_pci_range_parser_init(&parser, dev);
+ err = of_pci_range_parser_init(&parser, dev_node);
if (err)
goto parse_failed;
@@ -327,7 +309,7 @@ int of_pci_get_host_bridge_resources(struct device_node *dev,
goto parse_failed;
}
- err = of_pci_range_to_resource(&range, dev, res);
+ err = of_pci_range_to_resource(&range, dev_node, res);
if (err) {
kfree(res);
continue;
@@ -336,13 +318,13 @@ int of_pci_get_host_bridge_resources(struct device_node *dev,
if (resource_type(res) == IORESOURCE_IO) {
if (!io_base) {
pr_err("I/O range found for %pOF. Please provide an io_base pointer to save CPU base address\n",
- dev);
+ dev_node);
err = -EINVAL;
goto conversion_failed;
}
if (*io_base != (resource_size_t)OF_BAD_ADDR)
pr_warn("More than one I/O resource converted for %pOF. CPU base address for old range lost!\n",
- dev);
+ dev_node);
*io_base = range.cpu_addr;
}
@@ -359,6 +341,33 @@ int of_pci_get_host_bridge_resources(struct device_node *dev,
pci_free_resource_list(resources);
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,
+ unsigned char busno, unsigned char bus_max,
+ struct list_head *resources, resource_size_t *io_base)
+{
+ return __of_pci_get_host_bridge_resources(dev_node, busno,
+ bus_max, resources, io_base);
+}
EXPORT_SYMBOL_GPL(of_pci_get_host_bridge_resources);
#endif /* CONFIG_OF_ADDRESS */
diff --git a/include/linux/of_pci.h b/include/linux/of_pci.h
index 091033a6b836..74eec1943ad2 100644
--- a/include/linux/of_pci.h
+++ b/include/linux/of_pci.h
@@ -71,11 +71,11 @@ 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,
+int 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);
#else
-static inline int of_pci_get_host_bridge_resources(struct device_node *dev,
+static inline int 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)
{
--
2.13.6
Powered by blists - more mailing lists