x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F

Martin reported that the Supermicro X8DTH-i/6/iF/6F advertises incorrect
host bridge windows via _CRS:

  pci_root PNP0A08:00: host bridge window [io  0xf000-0xffff]
  pci_root PNP0A08:01: host bridge window [io  0xf000-0xffff]

Both bridges advertise the 0xf000-0xffff window, which cannot be correct.

Work around this by ignoring _CRS on this system.  The downside is that we
may not assign resources correctly to hot-added PCI devices (if they are
possible on this system).

Link: https://bugzilla.kernel.org/show_bug.cgi?id=42606
Reported-by: Martin Burnicki <martin.burnicki@meinberg.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org

path: root/include/soc/at91/atmel-secumod.h

/*
 * Atmel Security Module register offsets and bit definitions.
 *
 * Copyright (C) 2016 Atmel
 *
 * Author: Alexandre Belloni <alexandre.belloni@free-electrons.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#ifndef _LINUX_SOC_AT91_ATMEL_SECUMOD_H
#define _LINUX_SOC_AT91_ATMEL_SECUMOD_H

#define AT91_SECUMOD_RAMRDY	0x14
#define AT91_SECUMOD_RAMRDY_READY	BIT(0)

#endif /* _LINUX_SOC_AT91_ATMEL_SECUMOD_H */