Subject: [RFC PATCH v2 3/13] unify argument of firmware_map_add_early/hotplug

From: Yasuaki Ishimatsu <[email-masked]>
Date: Tue, 3 Jul 2012 14:55:22 +0900

There are two ways to create /sys/firmware/memmap/X sysfs:

  - firmware_map_add_early
    When the system starts, it is calledd from e820_reserve_resources()
  - firmware_map_add_hotplug
    When the memory is hot plugged, it is called from add_memory()

But these functions are called without unifying value of end argument as below:

  - end argument of firmware_map_add_early()   : start + size - 1
  - end argument of firmware_map_add_hogplug() : start + size

The patch unifies them to "start + size - 1".

CC: David Rientjes <[email-masked]>
CC: Jiang Liu <[email-masked]>
CC: Len Brown <[email-masked]>
CC: Benjamin Herrenschmidt <[email-masked]>
CC: Paul Mackerras <[email-masked]>
CC: Christoph Lameter <[email-masked]>
Cc: Minchan Kim <[email-masked]>
CC: Andrew Morton <[email-masked]>
CC: KOSAKI Motohiro <[email-masked]>
Signed-off-by: Yasuaki Ishimatsu <[email-masked]>

---
 mm/memory_hotplug.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-3.5-rc4/mm/memory_hotplug.c
===================================================================
--- linux-3.5-rc4.orig/mm/memory_hotplug.c	2012-07-03 14:21:58.332264022 +0900
+++ linux-3.5-rc4/mm/memory_hotplug.c	2012-07-03 14:22:00.190240794 +0900
@@ -642,7 +642,7 @@ int __ref add_memory(int nid, u64 start,
 	}

 	/* create new memmap entry */
-	firmware_map_add_hotplug(start, start + size, "System RAM");
+	firmware_map_add_hotplug(start, start + size - 1, "System RAM");

 	goto out;