diff options
| author | Thierry Reding <treding@nvidia.com> | 2016-11-25 11:57:10 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <helgaas@kernel.org> | 2016-12-07 12:05:48 -0600 |
| commit | 5909406598d9fab58be860b72dff9409bff11653 (patch) | |
| tree | ac32f861756ae7f87003e25b70f64932ba6665fc | |
| parent | 37d6a0a6f4700ad3ae7bbf8db38b4557e97b3fe4 (diff) | |
PCI: Allow driver-specific data in host bridge
Provide a way to allocate driver-specific data along with a PCI host bridge
structure. The bridge's ->private field points to this data.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
| -rw-r--r-- | drivers/pci/probe.c | 6 | ||||
| -rw-r--r-- | include/linux/pci.h | 11 |
2 files changed, 14 insertions, 3 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 4853c8fbd701..cf9cb6f30782 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -521,11 +521,11 @@ static void pci_release_host_bridge_dev(struct device *dev) kfree(bridge); } -static struct pci_host_bridge *pci_alloc_host_bridge(void) +static struct pci_host_bridge *pci_alloc_host_bridge(size_t priv) { struct pci_host_bridge *bridge; - bridge = kzalloc(sizeof(*bridge), GFP_KERNEL); + bridge = kzalloc(sizeof(*bridge) + priv, GFP_KERNEL); if (!bridge) return NULL; @@ -2253,7 +2253,7 @@ static struct pci_bus *pci_create_root_bus_msi(struct device *parent, int error; struct pci_host_bridge *bridge; - bridge = pci_alloc_host_bridge(); + bridge = pci_alloc_host_bridge(0); if (!bridge) return NULL; diff --git a/include/linux/pci.h b/include/linux/pci.h index f79634612fbf..beacb17e81fb 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -434,10 +434,21 @@ struct pci_host_bridge { resource_size_t start, resource_size_t size, resource_size_t align); + unsigned long private[0] ____cacheline_aligned; }; #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev) +static inline void *pci_host_bridge_priv(struct pci_host_bridge *bridge) +{ + return (void *)bridge->private; +} + +static inline struct pci_host_bridge *pci_host_bridge_from_priv(void *priv) +{ + return container_of(priv, struct pci_host_bridge, private); +} + struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus); void pci_set_host_bridge_release(struct pci_host_bridge *bridge, |