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Subject[PATCH 14/15] PCI Hotplug: cpqphp: don't use pci_find_slot()
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Convert uses of pci_find_slot to modern API.

In the conversion sites, we end up calling pci_dev_put() right away.

This may seem like it misses the entire point of doing something like
pci_get_bus_and_slot(), since we drop the reference so soon, but it turns
out we don't actually do much with the returned pci_dev.

I plan on untangling cpqphp further, but clearly cpqphp never worried too
much about a properly refcounted pci_dev anyway. For now, this conversion
seems reasonable, as it gets rid of the last in-tree caller of pci_find_slot.

Signed-off-by: Alex Chiang <achiang@hp.com>
---
drivers/pci/hotplug/Kconfig | 2 +-
drivers/pci/hotplug/cpqphp_pci.c | 16 +++++++++++-----
2 files changed, 12 insertions(+), 6 deletions(-)
diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig
index 9aa4fe1..ac888cc 100644
--- a/drivers/pci/hotplug/Kconfig
+++ b/drivers/pci/hotplug/Kconfig
@@ -41,7 +41,7 @@ config HOTPLUG_PCI_FAKE

config HOTPLUG_PCI_COMPAQ
tristate "Compaq PCI Hotplug driver"
- depends on X86 && PCI_BIOS && PCI_LEGACY
+ depends on X86 && PCI_BIOS
help
Say Y here if you have a motherboard with a Compaq PCI Hotplug
controller.
diff --git a/drivers/pci/hotplug/cpqphp_pci.c b/drivers/pci/hotplug/cpqphp_pci.c
index 3e3acc7..6173b9a 100644
--- a/drivers/pci/hotplug/cpqphp_pci.c
+++ b/drivers/pci/hotplug/cpqphp_pci.c
@@ -88,7 +88,7 @@ int cpqhp_configure_device (struct controller* ctrl, struct pci_func* func)
int num;

if (func->pci_dev == NULL)
- func->pci_dev = pci_find_slot(func->bus, PCI_DEVFN(func->device, func->function));
+ func->pci_dev = pci_get_bus_and_slot(func->bus,PCI_DEVFN(func->device, func->function));

/* No pci device, we need to create it then */
if (func->pci_dev == NULL) {
@@ -98,7 +98,7 @@ int cpqhp_configure_device (struct controller* ctrl, struct pci_func* func)
if (num)
pci_bus_add_devices(ctrl->pci_dev->bus);

- func->pci_dev = pci_find_slot(func->bus, PCI_DEVFN(func->device, func->function));
+ func->pci_dev = pci_get_bus_and_slot(func->bus, PCI_DEVFN(func->device, func->function));
if (func->pci_dev == NULL) {
dbg("ERROR: pci_dev still null\n");
return 0;
@@ -111,6 +111,8 @@ int cpqhp_configure_device (struct controller* ctrl, struct pci_func* func)
pci_do_scan_bus(child);
}

+ pci_dev_put(func->pci_dev);
+
return 0;
}

@@ -122,9 +124,11 @@ int cpqhp_unconfigure_device(struct pci_func* func)
dbg("%s: bus/dev/func = %x/%x/%x\n", __func__, func->bus, func->device, func->function);

for (j=0; j<8 ; j++) {
- struct pci_dev* temp = pci_find_slot(func->bus, PCI_DEVFN(func->device, j));
- if (temp)
+ struct pci_dev* temp = pci_get_bus_and_slot(func->bus, PCI_DEVFN(func->device, j));
+ if (temp) {
+ pci_dev_put(temp);
pci_remove_bus_device(temp);
+ }
}
return 0;
}
@@ -406,7 +410,7 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
new_slot->switch_save = 0x10;
/* In case of unsupported board */
new_slot->status = DevError;
- new_slot->pci_dev = pci_find_slot(new_slot->bus, (new_slot->device << 3) | new_slot->function);
+ new_slot->pci_dev = pci_get_bus_and_slot(new_slot->bus, (new_slot->device << 3) | new_slot->function);

for (cloop = 0; cloop < 0x20; cloop++) {
rc = pci_bus_read_config_dword(ctrl->pci_bus, PCI_DEVFN(device, function), cloop << 2, (u32 *) & (new_slot-> config_space [cloop]));
@@ -414,6 +418,8 @@ int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
return rc;
}

+ pci_dev_put(new_slot->pci_dev);
+
function++;

stop_it = 0;


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