Messages in this thread Patch in this message | | | Date | Tue, 21 Feb 2006 01:16:04 +0100 | From | Edgar Hucek <> | Subject | [PATCH 1/1] EFI iounpam fix for acpi_os_unmap_memory take two |
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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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