linux-kernel - [PATCH 2/3] mips: use the the PCI controller's io_map

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Date:	Mon, 30 Jan 2012 14:18:53 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Kevin Cernekee <cernekee@...il.com>
Cc:	Ralf Baechle <ralf@...ux-mips.org>,
	Paul Mundt <lethal@...ux-sh.org>,
	Arnd Bergmann <arnd@...db.de>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Myron Stowe <myron.stowe@...hat.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Lucas De Marchi <lucas.demarchi@...fusion.mobi>,
	Dmitry Kasatkin <dmitry.kasatkin@...el.com>,
	James Morris <jmorris@...ei.org>,
	"John W. Linville" <linville@...driver.com>,
	Michael Witten <mfwitten@...il.com>, linux-mips@...ux-mips.org,
	linux-kernel@...r.kernel.org, linux-sh@...r.kernel.org,
	linux-arch@...r.kernel.org
Subject: [PATCH 2/3] mips: use the the PCI controller's io_map_base

commit eab90291d35438bcebf7c3dc85be66d0f24e3002
failed to take into account the PCI controller's
io_map_base for mapping IO BARs.
This also caused a new warning on mips.

Fix this, without re-introducing code duplication,
by setting NO_GENERIC_PCI_IOPORT_MAP
and supplying a mips-specific __pci_ioport_map.

Reported-by: Kevin Cernekee <cernekee@...il.com>
Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
---
 arch/mips/Kconfig         |    1 +
 arch/mips/lib/iomap-pci.c |    4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index c4c1312..5ab6e89 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2356,6 +2356,7 @@ config PCI
 	depends on HW_HAS_PCI
 	select PCI_DOMAINS
 	select GENERIC_PCI_IOMAP
+	select NO_GENERIC_PCI_IOPORT_MAP
 	help
 	  Find out whether you have a PCI motherboard. PCI is the name of a
 	  bus system, i.e. the way the CPU talks to the other stuff inside
diff --git a/arch/mips/lib/iomap-pci.c b/arch/mips/lib/iomap-pci.c
index 2635b1a..fd35daa 100644
--- a/arch/mips/lib/iomap-pci.c
+++ b/arch/mips/lib/iomap-pci.c
@@ -10,8 +10,8 @@
 #include <linux/module.h>
 #include <asm/io.h>
 
-static void __iomem *ioport_map_pci(struct pci_dev *dev,
-                                     unsigned long port, unsigned int nr)
+void __iomem *__pci_ioport_map(struct pci_dev *dev,
+			       unsigned long port, unsigned int nr)
 {
 	struct pci_controller *ctrl = dev->bus->sysdata;
 	unsigned long base = ctrl->io_map_base;
-- 
1.7.8.2.325.g247f9

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