[17/30] PCI: cpqhp: deprecate pci_get_bus_and_slot()

Commit Message

Sinan Kaya Nov. 22, 2017, 5:31 a.m. UTC

pci_get_bus_and_slot() is restrictive such that it assumes domain=0 as
where a PCI device is present. This restricts the device drivers to be
reused for other domain numbers.

Use pci_get_domain_bus_and_slot() with a domain number of 0 where we can't
extract the domain number. Other places, use the actual domain number from
the device.

Signed-off-by: Sinan Kaya <[e-mail]>
---
 drivers/pci/hotplug/cpqphp_pci.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

Patch

diff --git a/drivers/pci/hotplug/cpqphp_pci.c b/drivers/pci/hotplug/cpqphp_pci.c
index e220d49..8897a77 100644
--- a/drivers/pci/hotplug/cpqphp_pci.c
+++ b/drivers/pci/hotplug/cpqphp_pci.c
@@ -89,7 +89,9 @@  int cpqhp_configure_device(struct controller *ctrl, struct pci_func *func)
 	pci_lock_rescan_remove();
 
 	if (func->pci_dev == NULL)
-		func->pci_dev = pci_get_bus_and_slot(func->bus, PCI_DEVFN(func->device, func->function));
+		func->pci_dev = pci_get_domain_bus_and_slot(0, func->bus,
+							PCI_DEVFN(func->device,
+							func->function));
 
 	/* No pci device, we need to create it then */
 	if (func->pci_dev == NULL) {
@@ -99,7 +101,9 @@  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_get_bus_and_slot(func->bus, PCI_DEVFN(func->device, func->function));
+		func->pci_dev = pci_get_domain_bus_and_slot(0, func->bus,
+							PCI_DEVFN(func->device,
+							func->function));
 		if (func->pci_dev == NULL) {
 			dbg("ERROR: pci_dev still null\n");
 			goto out;
@@ -129,7 +133,10 @@  int cpqhp_unconfigure_device(struct pci_func *func)
 
 	pci_lock_rescan_remove();
 	for (j = 0; j < 8 ; j++) {
-		struct pci_dev *temp = pci_get_bus_and_slot(func->bus, PCI_DEVFN(func->device, j));
+		struct pci_dev *temp = pci_get_domain_bus_and_slot(0,
+							func->bus,
+							PCI_DEVFN(func->device,
+							j));
 		if (temp) {
 			pci_dev_put(temp);
 			pci_stop_and_remove_bus_device(temp);
@@ -319,6 +326,7 @@  int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
 	int cloop = 0;
 	int stop_it;
 	int index;
+	u16 devfn;
 
 	/* Decide which slots are supported */
 
@@ -416,7 +424,9 @@  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_get_bus_and_slot(new_slot->bus, (new_slot->device << 3) | new_slot->function);
+			devfn = (new_slot->device << 3) | new_slot->function;
+			new_slot->pci_dev = pci_get_domain_bus_and_slot(0,
+							new_slot->bus, devfn);
 
 			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]));