linux-kernel - [PATCH 1/1] Char: mxser, fix ISA board lookup

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Message-Id: <1243612393-2111-1-git-send-email-jirislaby@gmail.com>
Date:	Fri, 29 May 2009 17:53:13 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	alan@...rguk.ukuu.org.uk
Cc:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Jiri Slaby <jirislaby@...il.com>,
	"Peter Botha" <peterb@...dcircle.co.za>
Subject: [PATCH 1/1] Char: mxser, fix ISA board lookup

From: "Peter Botha" <peterb@...dcircle.co.za>

There's a bug in the mxser kernel module that still appears in the 2.6.29.4
kernel.

mxser_get_ISA_conf takes a ioaddress as it's first argument, by passing the
not of the ioaddr, you're effectively passing 0
which means it won't be able to talk to an ISA card.
I have tested this, and removing the ! fixes the problem.

Cc: "Peter Botha" <peterb@...dcircle.co.za>
Signed-off-by: Jiri Slaby <jirislaby@...il.com>
---
 drivers/char/mxser.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 6dfef56..9533f43 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -2715,7 +2715,7 @@ static int __init mxser_module_init(void)
 			continue;
 
 		brd = &mxser_boards[m];
-		retval = mxser_get_ISA_conf(!ioaddr[b], brd);
+		retval = mxser_get_ISA_conf(ioaddr[b], brd);
 		if (retval <= 0) {
 			brd->info = NULL;
 			continue;
-- 
1.6.3

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