rapidio: fix RapidIO sysfs hierarchy

This set of RapidIO patches extends support for standard error recovery
mechanism and adds new IDT Gen2 sRIO switch devices - CPS-1848 and
CPS-1616. Implementation of the standard error-stopped state recovery
mechanism (as defined by the RapidIO specification) is required for the
new switches.

Version 2 of this set of patches addresses received comments and fixes an
error notification setup issue found in the idt_gen2.c after the first
version was released.

This patch:

Make RapidIO devices appear in /sys/devices/rapidio directory instead of
top of /sys/devices directory.

Signed-off-by: Alexandre Bounine <[e-mail]>
Cc: Thomas Moll <[e-mail]>
Cc: Matt Porter <[e-mail]>
Cc: Li Yang <[e-mail]>
Cc: Kumar Gala <[e-mail]>
Cc: Micha Nelissen <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/rapidio/rio-driver.c

···
       out:return 0;
 }
 
-static struct device rio_bus = {
+struct device rio_bus = {
 	.init_name = "rapidio",
 };
 

drivers/rapidio/rio-scan.c

···
 	}
 
 	rdev->dev.bus = &rio_bus_type;
+	rdev->dev.parent = &rio_bus;
 
 	device_initialize(&rdev->dev);
 	rdev->dev.release = rio_release_dev;

include/linux/rio.h

···
 #define RIO_PW_MSG_SIZE		64
 
 extern struct bus_type rio_bus_type;
+extern struct device rio_bus;
 extern struct list_head rio_devices;	/* list of all devices */
 
 struct rio_mport;