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mtd/maps/physmap: catch failure to register MTD_PHYSMAP_COMPAT device 

If the default Kconfig values are used with MTD_PHYSMAP_COMPAT you end
up with a resource where end < start.  This causes __request_resource to
return a conflict which then returns an -EBUSY error code.  The current
physmap.c code just assumes that the platfom_device_register will always
succeed.

Catch this failure during the physmap_init and propogate the error.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reported-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
H Hartley Sweeten 2010-04-02 17:46:30 -05:00 committed by David Woodhouse
parent fed457a836
commit 1ca5d2f019
1 changed files with 5 additions and 2 deletions
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7
drivers/mtd/maps/physmap.c
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@ -264,8 +264,11 @@ static int __init physmap_init(void)
err = platform_driver_register(&physmap_flash_driver);
#ifdef CONFIG_MTD_PHYSMAP_COMPAT
if (err == 0)
platform_device_register(&physmap_flash);
if (err == 0) {
err = platform_device_register(&physmap_flash);
if (err)
platform_driver_unregister(&physmap_flash_driver);
}
#endif
return err;