linux-kernel - [PATCH] sungem: limit reaches -1, but 0 tested

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Message-ID: <4984473C.1040508@gmail.com>
Date:	Sat, 31 Jan 2009 13:42:36 +0100
From:	Roel Kluin <roel.kluin@...il.com>
To:	netdev@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>
Subject: [PATCH] sungem: limit reaches -1, but 0 tested

With a postfix decrement these reach -1 rather than 0,
but after the loop it is tested to have become 0.

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
diff --git a/drivers/net/sungem_phy.c b/drivers/net/sungem_phy.c
index 61843fd..78f8cee 100644
--- a/drivers/net/sungem_phy.c
+++ b/drivers/net/sungem_phy.c
@@ -79,7 +79,7 @@ static int reset_one_mii_phy(struct mii_phy* phy, int phy_id)
 
 	udelay(100);
 
-	while (limit--) {
+	while (--limit) {
 		val = __phy_read(phy, phy_id, MII_BMCR);
 		if ((val & BMCR_RESET) == 0)
 			break;
--
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