From 2cc0bab8616a3d0ae1bae11f5cf16a582424aa91 Mon Sep 17 00:00:00 2001
From: Roel Kluin <roel.kluin@gmail.com>
Date: Fri, 18 Sep 2009 12:44:18 -0700
Subject: [PATCH] ARM: STMP3xxx: deallocation with negative index of
 descriptors[]

The last deallocation is invalid. In the last iteration, i is -1.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: dmitry pervushin <dpervushin@embeddedalley.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
 arch/arm/plat-stmp3xxx/dma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/plat-stmp3xxx/dma.c b/arch/arm/plat-stmp3xxx/dma.c
index d2f4977..ef88f25 100644
--- a/arch/arm/plat-stmp3xxx/dma.c
+++ b/arch/arm/plat-stmp3xxx/dma.c
@@ -264,7 +264,7 @@ int stmp3xxx_dma_make_chain(int ch, struct stmp37xx_circ_dma_chain *chain,
 					stmp3xxx_dma_free_command(ch,
 								  &descriptors
 								  [i]);
-				} while (i-- >= 0);
+				} while (i-- > 0);
 			}
 			return err;
 		}
-- 
2.7.4