From: Roel Kluin <roel.kluin@gmail.com>
Date: Thu, 6 Aug 2009 13:06:03 +0000 (+0000)
Subject: irda: fix read buffer overflow
X-Git-Tag: firefly_0821_release~13027^2~67
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5d5ceb8bdde403529ad9849f300dc80b1884550f;p=firefly-linux-kernel-4.4.55.git

irda: fix read buffer overflow

io[i] is read before the bounds check on i, order should be reversed.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/irda/w83977af_ir.c b/drivers/net/irda/w83977af_ir.c
index d0883835b0c6..fe4f2b2bff96 100644
--- a/drivers/net/irda/w83977af_ir.c
+++ b/drivers/net/irda/w83977af_ir.c
@@ -115,7 +115,7 @@ static int __init w83977af_init(void)
 
 	IRDA_DEBUG(0, "%s()\n", __func__ );
 
-	for (i=0; (io[i] < 2000) && (i < ARRAY_SIZE(dev_self)); i++) {
+	for (i=0; i < ARRAY_SIZE(dev_self) && io[i] < 2000; i++) {
 		if (w83977af_open(i, io[i], irq[i], dma[i]) == 0)
 			return 0;
 	}