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Message-Id: <1393506599-11561-2-git-send-email-Liviu.Dudau@arm.com>
Date: Thu, 27 Feb 2014 13:09:57 +0000
From: Liviu Dudau <Liviu.Dudau@....com>
To: linux-pci <linux-pci@...r.kernel.org>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Catalin Marinas <Catalin.Marinas@....com>,
Will Deacon <Will.Deacon@....com>,
linaro-kernel <linaro-kernel@...ts.linaro.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
LAKML <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v2 1/3] Fix ioport_map() for !CONFIG_GENERIC_IOMAP cases.
The inline version of ioport_map() that gets used when !CONFIG_GENERIC_IOMAP
is wrong. It returns a mapped (i.e. virtual) address that can start from
zero and completely ignores the PCI_IOBASE and IO_SPACE_LIMIT that most
architectures that use !CONFIG_GENERIC_MAP define.
Signed-off-by: Liviu Dudau <Liviu.Dudau@....com>
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index d5afe96..df72051 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -331,7 +331,7 @@ static inline void iounmap(void __iomem *addr)
#ifndef CONFIG_GENERIC_IOMAP
static inline void __iomem *ioport_map(unsigned long port, unsigned int nr)
{
- return (void __iomem *) port;
+ return (void __iomem *)(PCI_IOBASE + (port & IO_SPACE_LIMIT));
}
static inline void ioport_unmap(void __iomem *p)
--
1.9.0
--
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