pcibios_root_bridge_prepare() in powerpc set
root bus speed, it's not the preparation for
pci host bridge. Rename it for better readability,
and we could move pcibios_root_bridge_prepare()
to pci_create_host_bridge(), in which root bus
is not created. We will clean up these weak functions,
and add pci_host_bridge_ops to do the same thing
in later patch.
Signed-off-by: Yijing Wang <wangyij...@huawei.com>
---
arch/powerpc/include/asm/machdep.h | 2 +-
arch/powerpc/kernel/pci-common.c | 8 +++-----
arch/powerpc/platforms/pseries/pci.c | 8 ++++----
arch/powerpc/platforms/pseries/setup.c | 2 +-
drivers/pci/probe.c | 5 +++++
5 files changed, 14 insertions(+), 11 deletions(-)
diff --git a/arch/powerpc/include/asm/machdep.h
b/arch/powerpc/include/asm/machdep.h
index c8175a3..b811d12 100644
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -129,7 +129,7 @@ struct machdep_calls {
void (*pcibios_fixup)(void);
int (*pci_probe_mode)(struct pci_bus *);
void (*pci_irq_fixup)(struct pci_dev *dev);
- int (*pcibios_root_bridge_prepare)(struct pci_host_bridge
+ void (*pcibios_set_root_bus_speed)(struct pci_host_bridge
*bridge);
/* To setup PHBs when using automatic OF platform driver for PCI */
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 9913f6c..2c58200 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -767,12 +767,10 @@ int pci_proc_domain(struct pci_bus *bus)
return 1;
}
-int pcibios_root_bridge_prepare(struct pci_host_bridge *bridge)
+void pcibios_set_root_bus_speed(struct pci_host_bridge *bridge)
{
- if (ppc_md.pcibios_root_bridge_prepare)
- return ppc_md.pcibios_root_bridge_prepare(bridge);
-
- return 0;
+ if (ppc_md.pcibios_set_root_bus_speed)
+ return ppc_md.pcibios_set_root_bus_speed(bridge);
}
/* This header fixup will do the resource fixup for all devices as they are
diff --git a/arch/powerpc/platforms/pseries/pci.c
b/arch/powerpc/platforms/pseries/pci.c
index fe16a50..89ff79c 100644
--- a/arch/powerpc/platforms/pseries/pci.c
+++ b/arch/powerpc/platforms/pseries/pci.c
@@ -110,7 +110,7 @@ static void fixup_winbond_82c105(struct pci_dev* dev)
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105,
fixup_winbond_82c105);
-int pseries_root_bridge_prepare(struct pci_host_bridge *bridge)
+void pseries_set_root_bus_speed(struct pci_host_bridge *bridge)
{
struct device_node *dn, *pdn;
struct pci_bus *bus;
@@ -121,7 +121,7 @@ int pseries_root_bridge_prepare(struct pci_host_bridge
*bridge)
dn = pcibios_get_phb_of_node(bus);
if (!dn)
- return 0;
+ return;
for (pdn = dn; pdn != NULL; pdn = of_get_next_parent(pdn)) {
rc = of_property_read_u32_array(pdn,
@@ -135,7 +135,7 @@ int pseries_root_bridge_prepare(struct pci_host_bridge
*bridge)
if (rc) {
pr_debug("no ibm,pcie-link-speed-stats property\n");
- return 0;
+ return;
}
switch (pcie_link_speed_stats[0]) {
@@ -168,5 +168,5 @@ int pseries_root_bridge_prepare(struct pci_host_bridge
*bridge)
break;
}
- return 0;
+ return;
}
diff --git a/arch/powerpc/platforms/pseries/setup.c
b/arch/powerpc/platforms/pseries/setup.c
index e445b67..b196c0d 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -496,7 +496,7 @@ static void __init pSeries_setup_arch(void)
ppc_md.enable_pmcs = power4_enable_pmcs;
}
- ppc_md.pcibios_root_bridge_prepare = pseries_root_bridge_prepare;
+ ppc_md.pcibios_set_root_bus_speed = pseries_set_root_bus_speed;
if (firmware_has_feature(FW_FEATURE_SET_MODE)) {
long rc;
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 0ac2bf6..418a426 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1856,6 +1856,10 @@ int __weak pcibios_root_bridge_prepare(struct
pci_host_bridge *bridge)
return 0;
}
+void __weak pcibios_set_root_bus_speed(struct pci_host_bridge *bridge)
+{
+}
+
void __weak pcibios_add_bus(struct pci_bus *bus)
{
}
@@ -1893,6 +1897,7 @@ static struct pci_bus *__pci_create_root_bus(
if (error)
goto put_dev;
+ pcibios_set_root_bus_speed(bridge);
device_enable_async_suspend(b->bridge);
pci_set_bus_of_node(b);
--
1.7.1
--
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