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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/acpi
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/acpi')
-rw-r--r--include/acpi/acpiosxf.h1
-rw-r--r--include/acpi/acpixf.h4
2 files changed, 5 insertions, 0 deletions
diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index a62720a..ab0b85c 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -144,6 +144,7 @@ void __iomem *acpi_os_map_memory(acpi_physical_address where,
acpi_size length);
void acpi_os_unmap_memory(void __iomem * logical_address, acpi_size size);
+void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size);
#ifdef ACPI_FUTURE_USAGE
acpi_status
diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index c8e8cf4..cc40102 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -130,6 +130,10 @@ acpi_get_table_header(acpi_string signature,
struct acpi_table_header *out_table_header);
acpi_status
+acpi_get_table_with_size(acpi_string signature,
+ u32 instance, struct acpi_table_header **out_table,
+ acpi_size *tbl_size);
+acpi_status
acpi_get_table(acpi_string signature,
u32 instance, struct acpi_table_header **out_table);
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