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authorYinghai Lu <yhlu.kernel@gmail.com>2009-02-07 15:39:41 -0800
committerIngo Molnar <mingo@elte.hu>2009-02-09 13:35:07 +0100
commit7d97277b754d3ee098a5ec69b6aaafb00c94e2f2 (patch)
tree457ff6256a2da2f39f93500453a6a643ab29ef2b /include/linux/acpi.h
parent05876f88ed9a66b26af613e222795ae790616252 (diff)
downloadop-kernel-dev-7d97277b754d3ee098a5ec69b6aaafb00c94e2f2.zip
op-kernel-dev-7d97277b754d3ee098a5ec69b6aaafb00c94e2f2.tar.gz
acpi/x86: introduce __apci_map_table, v4
to prevent wrongly overwriting fixmap that still want to use. ACPI used to rely on low mappings being all linearly mapped and grew a habit: it never really unmapped certain kinds of tables after use. This can cause problems - for example the hypothetical case when some spurious access still references it. v2: remove prev_map and prev_size in __apci_map_table v3: let acpi_os_unmap_memory() call early_iounmap too, so remove extral calling to early_acpi_os_unmap_memory v4: fix typo in one acpi_get_table_with_size calling Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Acked-by: Len Brown <len.brown@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/acpi.h')
-rw-r--r--include/linux/acpi.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 6fce2fc..d59f0fa 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -79,6 +79,7 @@ typedef int (*acpi_table_handler) (struct acpi_table_header *table);
typedef int (*acpi_table_entry_handler) (struct acpi_subtable_header *header, const unsigned long end);
char * __acpi_map_table (unsigned long phys_addr, unsigned long size);
+void __init __acpi_unmap_table(char *map, unsigned long size);
int early_acpi_boot_init(void);
int acpi_boot_init (void);
int acpi_boot_table_init (void);
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