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ARM/PCI: Move align_resource function pointer to pci_host_bridge structure

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Commit b3a72384fe ("ARM/PCI: Replace pci_sys_data->align_resource with
global function pointer") introduced an ARM-specific align_resource()
function pointer.  This is not portable to other arches and doesn't work
for platforms with two different PCIe host bridge controllers.

Move the function pointer to the pci_host_bridge structure so each host
bridge driver can specify its own align_resource() function.

Signed-off-by: Gabriele Paoloni <gabriele.paoloni@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Gabriele Paoloni
2015-11-11 09:12:25 +08:00
committed by Bjorn Helgaas
parent 9f55cf5654
commit 7c7a0e9453
3 changed files with 20 additions and 10 deletions
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9
include/linux/pci.h
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@@ -412,9 +412,18 @@ struct pci_host_bridge {
void (*release_fn)(struct pci_host_bridge *);
void *release_data;
unsigned int ignore_reset_delay:1; /* for entire hierarchy */
/* Resource alignment requirements */
resource_size_t (*align_resource)(struct pci_dev *dev,
const struct resource *res,
resource_size_t start,
resource_size_t size,
resource_size_t align);
};
#define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev)
struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus);
void pci_set_host_bridge_release(struct pci_host_bridge *bridge,
void (*release_fn)(struct pci_host_bridge *),
void *release_data);