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PCI: Add pci_free_host_bridge() interface 

Commit a52d1443bb ("PCI: Export host bridge registration interface")
exported the pci_alloc_host_bridge() interface so that PCI host controllers
drivers can make use of it.

Introduce pci_alloc_host_bridge() kernel counterpart to free the host
bridge data structures, pci_free_host_bridge(), export it and update kernel
functions releasing host bridge objects allocated memory to make use of it.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Lorenzo Pieralisi 2017-06-28 15:13:52 -05:00 committed by Bjorn Helgaas
parent a1c0050a17
commit dff79b91b8
2 changed files with 10 additions and 3 deletions
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12
drivers/pci/probe.c
View File

@ -517,9 +517,7 @@ static void pci_release_host_bridge_dev(struct device *dev)
if (bridge->release_fn) if (bridge->release_fn)
bridge->release_fn(bridge); bridge->release_fn(bridge);
pci_free_resource_list(&bridge->windows); pci_free_host_bridge(bridge);
kfree(bridge);
} }
struct pci_host_bridge *pci_alloc_host_bridge(size_t priv) struct pci_host_bridge *pci_alloc_host_bridge(size_t priv)
@ -537,6 +535,14 @@ struct pci_host_bridge *pci_alloc_host_bridge(size_t priv)
} }
EXPORT_SYMBOL(pci_alloc_host_bridge); EXPORT_SYMBOL(pci_alloc_host_bridge);
void pci_free_host_bridge(struct pci_host_bridge *bridge)
{
pci_free_resource_list(&bridge->windows);
kfree(bridge);
}
EXPORT_SYMBOL(pci_free_host_bridge);
static const unsigned char pcix_bus_speed[] = { static const unsigned char pcix_bus_speed[] = {
PCI_SPEED_UNKNOWN, /* 0 */ PCI_SPEED_UNKNOWN, /* 0 */
PCI_SPEED_66MHz_PCIX, /* 1 */ PCI_SPEED_66MHz_PCIX, /* 1 */

1
include/linux/pci.h
View File

@ -458,6 +458,7 @@ static inline struct pci_host_bridge *pci_host_bridge_from_priv(void *priv)
} }
struct pci_host_bridge *pci_alloc_host_bridge(size_t priv); struct pci_host_bridge *pci_alloc_host_bridge(size_t priv);
void pci_free_host_bridge(struct pci_host_bridge *bridge);
int pci_register_host_bridge(struct pci_host_bridge *bridge); int pci_register_host_bridge(struct pci_host_bridge *bridge);
struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus); struct pci_host_bridge *pci_find_host_bridge(struct pci_bus *bus);