char: mxser, fix ISA board lookup

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

mxser_get_ISA_conf takes a ioaddress as its 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" <>
Signed-off-by: Jiri Slaby <>
Acked-by: Alan Cox <>
Cc: <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index a420e8d..13f8871 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -2711,7 +2711,7 @@
 		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;