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Subject[PATCH 1/1] EFI iounpam fix for acpi_os_unmap_memory take two
When EFI is enabled acpi_os_unmap_memory trys to unmap memory
which was not mapped by acpi_os_map_memory.

Signed-off-by: Edgar Hucek <hostmaster@ed-soft.at>

diff -uNr linux-2.6.16-rc4.orig/drivers/acpi/osl.c linux-2.6.16-rc4/drivers/acpi/osl.c
--- linux-2.6.16-rc4.orig/drivers/acpi/osl.c 2006-02-19 18:48:58.000000000 +0100
+++ linux-2.6.16-rc4/drivers/acpi/osl.c 2006-02-20 15:31:44.000000000 +0100
@@ -208,7 +208,13 @@

void acpi_os_unmap_memory(void __iomem * virt, acpi_size size)
{
- iounmap(virt);
+ if(efi_enabled) {
+ if (!(EFI_MEMORY_WB & efi_mem_attributes(virt_to_phys(virt)))) {
+ iounmap(virt);
+ }
+ } else {
+ iounmap(virt);
+ }
}
EXPORT_SYMBOL_GPL(acpi_os_unmap_memory);

-
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