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ARM: tegra: Prevent dynamically ioremapping device io memory

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Change-Id: I893a42bd773b1acdf2b83f8602fe1aa6a8ea6741
Signed-off-by: Colin Cross <ccross@android.com>
This commit is contained in:
Colin Cross
2011-01-21 17:04:36 -08:00
parent 5d8b46b6df
commit 3edd9628c0
1 changed files with 13 additions and 1 deletions
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14
arch/arm/mach-tegra/io.c
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@@ -86,8 +86,20 @@ void __init tegra_map_common_io(void)
void __iomem *tegra_ioremap(unsigned long p, size_t size, unsigned int type)
{
void __iomem *v = IO_ADDRESS(p);
if (v == NULL)
/*
* __arm_ioremap fails to set the domain of ioremapped memory
* correctly, only use it on physical memory.
*/
if (v == NULL && p < SZ_1G)
v = __arm_ioremap(p, size, type);
/*
* If the physical address was not physical memory or statically
* mapped, there's nothing we can do to map it safely.
*/
BUG_ON(v == NULL);
return v;
}
EXPORT_SYMBOL(tegra_ioremap);