[tip:x86/mm] arch/x86/kernel/e820.c: quiet sparse noise about plain integer as NULL pointer

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Commit-ID:  706d9a9c8b5758390036b9980a2b12d809599777
Gitweb:     http://git.kernel.org/tip/706d9a9c8b5758390036b9980a2b12d809599777
Author:     H Hartley Sweeten <hartleys@xxxxxxxxxxxxxxxxxxx>
AuthorDate: Tue, 15 Nov 2011 14:48:56 -0800
Committer:  Ingo Molnar <mingo@xxxxxxx>
CommitDate: Mon, 5 Dec 2011 17:10:20 +0100

arch/x86/kernel/e820.c: quiet sparse noise about plain integer as NULL pointer

The last parameter to sort() is a pointer to the function used
to swap items.  This parameter should be NULL, not 0, when not
used.  This quiets the following sparse warning:

 warning: Using plain integer as NULL pointer

Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: hartleys@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
 arch/x86/kernel/e820.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index f655f80..d6bd853 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -296,7 +296,7 @@ int __init sanitize_e820_map(struct e820entry *biosmap, int max_nr_map,
 	chg_nr = chgidx;
 
 	/* sort change-point list by memory addresses (low -> high) */
-	sort(change_point, chg_nr, sizeof *change_point, cpcompare, 0);
+	sort(change_point, chg_nr, sizeof *change_point, cpcompare, NULL);
 
 	/* create a new bios memory map, removing overlaps */
 	overlap_entries = 0;	 /* number of entries in the overlap table */
--
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