parport: Use request_muxed_region for IT87 probe and lock
Alan Cox [Wed, 4 May 2011 09:18:42 +0000 (10:18 +0100)]
This is needed as part of making the various IT87 drivers actually co-exist
politely with each other, and with other superio devices that may be muxed
on 0x2E/0x2F.

It can be applied before or after the other patches by Nat Gurumoorthy without
problem.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/parport/parport_pc.c

index a3755ff..d3c0665 100644 (file)
@@ -1621,7 +1621,7 @@ static void __devinit detect_and_report_it87(void)
        u8 origval, r;
        if (verbose_probing)
                printk(KERN_DEBUG "IT8705 Super-IO detection, now testing port 2E ...\n");
-       if (!request_region(0x2e, 2, __func__))
+       if (!request_muxed_region(0x2e, 2, __func__))
                return;
        origval = inb(0x2e);            /* Save original value */
        outb(0x87, 0x2e);