From: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
To: linux-sh@vger.kernel.org
Subject: [PATCH 2/2] sh: Add sh_io_port_base check in __ioport_map function
Date: Sun, 27 Mar 2011 04:31:47 +0000 [thread overview]
Message-ID: <1301200307-5321-2-git-send-email-iwamatsu@nigauri.org> (raw)
sh_io_port_base is initialized with -1.
When user use sh_io_port_base, IO port address -1 slips off.
This revise it if sh_io_port_base was set -1.
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
arch/sh/kernel/ioport.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/sh/kernel/ioport.c b/arch/sh/kernel/ioport.c
index e3ad610..30937e9 100644
--- a/arch/sh/kernel/ioport.c
+++ b/arch/sh/kernel/ioport.c
@@ -19,6 +19,10 @@ void __iomem *__ioport_map(unsigned long addr, unsigned int size)
if (sh_mv.mv_ioport_map)
return sh_mv.mv_ioport_map(addr, size);
+ /* Don't use sh_io_port_base */
+ if (sh_io_port_base = -1)
+ return (void __iomem *)addr;
+
return (void __iomem *)(addr + sh_io_port_base);
}
EXPORT_SYMBOL(__ioport_map);
--
1.7.4.1
next reply other threads:[~2011-03-27 4:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-27 4:31 Nobuhiro Iwamatsu [this message]
2011-03-27 6:37 ` [PATCH 2/2] sh: Add sh_io_port_base check in __ioport_map function Daniel Palmer
2011-03-27 7:45 ` Nobuhiro Iwamatsu
2011-03-28 14:08 ` Daniel Palmer
2011-03-28 23:29 ` Nobuhiro Iwamatsu
2011-03-30 7:37 ` Daniel Palmer
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