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Subject[PATCH v6 11/30] PCI: Save sysdata in pci_host_bridge drvdata
Date
Save platform specific sysdata in pci_host_bridge
drvdata, host bridge specific operation need to
access it before the pci bus creation.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
---
drivers/pci/host-bridge.c | 4 +++-
drivers/pci/pci.h | 4 +++-
drivers/pci/probe.c | 18 ++++++++----------
3 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c
index 0bb08ef..3c34c49 100644
--- a/drivers/pci/host-bridge.c
+++ b/drivers/pci/host-bridge.c
@@ -23,7 +23,8 @@ static void pci_release_host_bridge_dev(struct device *dev)
}

struct pci_host_bridge *pci_create_host_bridge(
- struct device *parent, u32 db, struct list_head *resources)
+ struct device *parent, u32 db,
+ struct list_head *resources, void *sysdata)
{
int error;
int bus = PCI_BUSNUM(db);
@@ -58,6 +59,7 @@ struct pci_host_bridge *pci_create_host_bridge(
host->dev.parent = parent;
INIT_LIST_HEAD(&host->windows);
host->dev.release = pci_release_host_bridge_dev;
+ dev_set_drvdata(&host->dev, sysdata);
dev_set_name(&host->dev, "pci%04x:%02x", host->domain,
host->busnum);

diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 3de5e51..79a8894 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -324,6 +324,8 @@ static inline int pci_dev_specific_reset(struct pci_dev *dev, int probe)
#endif

struct pci_host_bridge *pci_create_host_bridge(
- struct device *parent, u32 dombus, struct list_head *resources);
+ struct device *parent, u32 dombus,
+ struct list_head *resources, void *sysdata);
+
void pci_free_host_bridge(struct pci_host_bridge *host);
#endif /* DRIVERS_PCI_H */
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 7238fa3..c8e074d 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1866,8 +1866,7 @@ void __weak pcibios_remove_bus(struct pci_bus *bus)
}

static struct pci_bus *__pci_create_root_bus(
- struct pci_host_bridge *bridge, struct pci_ops *ops,
- void *sysdata)
+ struct pci_host_bridge *bridge, struct pci_ops *ops)
{
int error;
struct pci_bus *b;
@@ -1883,7 +1882,7 @@ static struct pci_bus *__pci_create_root_bus(
if (!b)
return NULL;

- b->sysdata = sysdata;
+ b->sysdata = dev_get_drvdata(&bridge->dev);
b->ops = ops;
b->number = b->busn_res.start = bridge->busnum;
pci_bus_assign_domain_nr(b, parent);
@@ -1955,11 +1954,11 @@ struct pci_bus *pci_create_root_bus(struct device *parent, u32 db,
{
struct pci_host_bridge *host;

- host = pci_create_host_bridge(parent, db, resources);
+ host = pci_create_host_bridge(parent, db, resources, sysdata);
if (!host)
return NULL;

- return __pci_create_root_bus(host, ops, sysdata);
+ return __pci_create_root_bus(host, ops);
}

int pci_bus_insert_busn_res(struct pci_bus *b, int bus, int bus_max)
@@ -2026,8 +2025,7 @@ void pci_bus_release_busn_res(struct pci_bus *b)
}

static struct pci_bus *__pci_scan_root_bus(
- struct pci_host_bridge *host, struct pci_ops *ops,
- void *sysdata)
+ struct pci_host_bridge *host, struct pci_ops *ops)
{
struct resource_entry *window;
bool found = false;
@@ -2040,7 +2038,7 @@ static struct pci_bus *__pci_scan_root_bus(
break;
}

- b = __pci_create_root_bus(host, ops, sysdata);
+ b = __pci_create_root_bus(host, ops);
if (!b) {
pci_free_host_bridge(host);
return NULL;
@@ -2066,11 +2064,11 @@ struct pci_bus *pci_scan_root_bus(struct device *parent, u32 db,
{
struct pci_host_bridge *host;

- host = pci_create_host_bridge(parent, db, resources);
+ host = pci_create_host_bridge(parent, db, resources, sysdata);
if (!host)
return NULL;

- return __pci_scan_root_bus(host, ops, sysdata);
+ return __pci_scan_root_bus(host, ops);
}
EXPORT_SYMBOL(pci_scan_root_bus);

--
1.7.1


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