netdev - [PATCH] postfix decrement error in smc911x

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <472E59B1.80206@tiscali.nl>
Date:	Mon, 05 Nov 2007 00:45:53 +0100
From:	Roel Kluin <12o3l@...cali.nl>
To:	netdev@...r.kernel.org
Subject: [PATCH] postfix decrement error in smc911x_reset(); drivers/net/smc911x.c

If timeout causes the loop to end, a postfix decrement causes its value to 
become 4294967295 (unsigned int), not 0.

Signed-off-by: Roel Kluin <12o3l@...cali.nl>
---
diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index dd18af0..41f3c8f 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -243,7 +243,7 @@ static void smc911x_reset(struct net_device *dev)
 		do {
 			udelay(10);
 			reg = SMC_GET_PMT_CTRL() & PMT_CTRL_READY_;
-		} while ( timeout-- && !reg);
+		} while ( --timeout && !reg);
 		if (timeout == 0) {
 			PRINTK("%s: smc911x_reset timeout waiting for PM restore\n", dev->name);
 			return;

-
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html