commit f47edc6dab11801c2e97088ba7bbce042ded867c
author Roel Kluin <roel.kluin@gmail.com> Fri May 22 16:46:52 2009 +0800
committer Li Yang <leoli@freescale.com> Fri May 22 16:46:52 2009 +0800
tree 99de3f248d23b997813ba0da149359601ed281e1
parent 0899d6349c60e4021224b51c8c97f49b829dfefd

fsldma: fix check on potential fdev->chan[] overflow

Fix the check of potential array overflow when using corrupted channel
device tree nodes.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Li Yang <leoli@freescale.com>

drivers/dma/fsldma.c

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index da8a8ed..391b1bd 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -830,7 +830,7 @@
 			new_fsl_chan->reg.end - new_fsl_chan->reg.start + 1);
 
 	new_fsl_chan->id = ((new_fsl_chan->reg.start - 0x100) & 0xfff) >> 7;
-	if (new_fsl_chan->id > FSL_DMA_MAX_CHANS_PER_DEVICE) {
+	if (new_fsl_chan->id >= FSL_DMA_MAX_CHANS_PER_DEVICE) {
 		dev_err(fdev->dev, "There is no %d channel!\n",
 				new_fsl_chan->id);
 		err = -EINVAL;