linux-kernel - [PATCH] x86/PCI: Fix compile errors when CONFIG

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Date:   Wed, 20 Oct 2021 12:21:02 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Myron Stowe <myron.stowe@...hat.com>,
        Juha-Pekka Heikkila <juhapekka.heikkila@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>
Cc:     Hans de Goede <hdegoede@...hat.com>, linux-acpi@...r.kernel.org,
        linux-pci@...r.kernel.org, x86@...nel.org,
        linux-kernel@...r.kernel.org, kernel test robot <lkp@...el.com>
Subject: [PATCH] x86/PCI: Fix compile errors when CONFIG_PCI is disabled

arch/x86/include/asm/pci_x86.h uses a number of data -types and defines
without including the headers which define these.

Instead so far it has been relying on files including it including the
necessary headers first.

Recently a include <asm/pci_x86.h> was added to arch/x86/kernel/resource.c
which does not include the necessary headers first.

Add the missing includes to arch/x86/include/asm/pci_x86.h to fix the
compile errors (with certain .config-s) when it is included from
arch/x86/kernel/resource.c.

Fixes: f10507a66e36 ("x86/PCI: Ignore E820 reservations for bridge windows on newer systems")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
---
 arch/x86/include/asm/pci_x86.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h
index 0bb4e7dd0ffc..c5413d8007ed 100644
--- a/arch/x86/include/asm/pci_x86.h
+++ b/arch/x86/include/asm/pci_x86.h
@@ -5,7 +5,10 @@
  *	(c) 1999 Martin Mares <mj@....cz>
  */
 
+#include <linux/errno.h>
+#include <linux/init.h>
 #include <linux/ioport.h>
+#include <linux/spinlock.h>
 
 #undef DEBUG
 
-- 
2.31.1