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Commit 1ca5d2f0 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by David Woodhouse
Browse files

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: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Reported-by: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent fed457a8

drivers/mtd/maps/physmap.c

+5 −2
Original line number Diff line number Diff line
@@ -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;