Being able to get back a pci_controller struct back by searching for it means we can do things like dynamically allocate them or not have to expose the static structures to all users.
Signed-off-by: Kumar Gala galak@kernel.crashing.org --- drivers/pci/pci.c | 11 +++++++++++ include/pci.h | 1 + 2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 702ac67..74ef4ec 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -165,6 +165,17 @@ struct pci_controller *pci_bus_to_hose (int bus) return NULL; }
+struct pci_controller *find_hose_by_cfg_addr(void *cfg_addr) +{ + struct pci_controller *hose; + + for (hose = hose_head; hose; hose = hose->next) + if (hose->cfg_addr == cfg_addr) + return hose; + + return NULL; +} + int pci_last_busno(void) { struct pci_controller *hose = hose_head; diff --git a/include/pci.h b/include/pci.h index c456006..e80b6bd 100644 --- a/include/pci.h +++ b/include/pci.h @@ -511,6 +511,7 @@ extern int pci_hose_write_config_word_via_dword(struct pci_controller *hose, extern void *pci_map_bar(pci_dev_t pdev, int bar, int flags); extern void pci_register_hose(struct pci_controller* hose); extern struct pci_controller* pci_bus_to_hose(int bus); +extern struct pci_controller *find_hose_by_cfg_addr(void *cfg_addr);
extern int pci_hose_scan(struct pci_controller *hose); extern int pci_hose_scan_bus(struct pci_controller *hose, int bus);