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PCIE: check and return bus_register errors 

Have pcie_port_bus_register() notice and return errors.
Mark it __must_check so that its caller(s) must check its return value.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Randy Dunlap 2006-07-08 22:58:25 -07:00 committed by Greg Kroah-Hartman
parent 6397c75cbc
commit 20d516602c
3 changed files with 11 additions and 5 deletions
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2
drivers/pci/pcie/portdrv.h
View File

@ -39,7 +39,7 @@ extern int pcie_port_device_suspend(struct pci_dev *dev, pm_message_t state);
extern int pcie_port_device_resume(struct pci_dev *dev); extern int pcie_port_device_resume(struct pci_dev *dev);
#endif #endif
extern void pcie_port_device_remove(struct pci_dev *dev); extern void pcie_port_device_remove(struct pci_dev *dev);
extern void pcie_port_bus_register(void); extern int pcie_port_bus_register(void);
extern void pcie_port_bus_unregister(void); extern void pcie_port_bus_unregister(void);
#endif /* _PORTDRV_H_ */ #endif /* _PORTDRV_H_ */

5
drivers/pci/pcie/portdrv_core.c
View File

@ -6,6 +6,7 @@
* Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com) * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)
*/ */
#include <linux/compiler.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/pci.h> #include <linux/pci.h>
#include <linux/kernel.h> #include <linux/kernel.h>
@ -402,9 +403,9 @@ void pcie_port_device_remove(struct pci_dev *dev)
pci_disable_msi(dev); pci_disable_msi(dev);
} }
void pcie_port_bus_register(void) int __must_check pcie_port_bus_register(void)
{ {
bus_register(&pcie_port_bus_type); return bus_register(&pcie_port_bus_type);
} }
void pcie_port_bus_unregister(void) void pcie_port_bus_unregister(void)

9
drivers/pci/pcie/portdrv_pci.c
View File

@ -129,12 +129,17 @@ static struct pci_driver pcie_portdrv = {
static int __init pcie_portdrv_init(void) static int __init pcie_portdrv_init(void)
{ {
int retval = 0; int retval;
pcie_port_bus_register(); retval = pcie_port_bus_register();
if (retval) {
printk(KERN_WARNING "PCIE: bus_register error: %d\n", retval);
goto out;
}
retval = pci_register_driver(&pcie_portdrv); retval = pci_register_driver(&pcie_portdrv);
if (retval) if (retval)
pcie_port_bus_unregister(); pcie_port_bus_unregister();
out:
return retval; return retval;
} }