diff options
| author | Yinghai Lu <yhlu.kernel@gmail.com> | 2009-02-07 15:39:41 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-09 13:35:07 +0100 |
| commit | 7d97277b754d3ee098a5ec69b6aaafb00c94e2f2 (patch) | |
| tree | 457ff6256a2da2f39f93500453a6a643ab29ef2b /drivers/acpi/bus.c | |
| parent | 05876f88ed9a66b26af613e222795ae790616252 (diff) | |
| download | olio-linux-3.10-7d97277b754d3ee098a5ec69b6aaafb00c94e2f2.tar.xz olio-linux-3.10-7d97277b754d3ee098a5ec69b6aaafb00c94e2f2.zip | |
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 'drivers/acpi/bus.c')
| -rw-r--r-- | drivers/acpi/bus.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index fb1be7b5dbc..765fd1c56cd 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -694,12 +694,6 @@ void __init acpi_early_init(void) if (!acpi_strict) acpi_gbl_enable_interpreter_slack = TRUE; - /* - * Doing a zero-sized mapping will clear out the previous - * __acpi_map_table() mapping, if any. - */ - __acpi_map_table(0, 0); - acpi_gbl_permanent_mmap = 1; status = acpi_reallocate_root_table(); |