diff options
| author | Lv Zheng <lv.zheng@intel.com> | 2016-12-14 15:04:39 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-12-21 02:36:38 +0100 |
| commit | 6b11d1d677132816252004426ef220ccd3c92d2f (patch) | |
| tree | a512975fe6a4602264de5cbccd8926d0c121a0e6 /drivers/iommu/dmar.c | |
| parent | 66360faa4333babc53836c7b59a0cff68cb0a9c6 (diff) | |
ACPI / osl: Remove acpi_get_table_with_size()/early_acpi_os_unmap_memory() users
This patch removes the users of the deprectated APIs:
acpi_get_table_with_size()
early_acpi_os_unmap_memory()
The following APIs should be used instead of:
acpi_get_table()
acpi_put_table()
The deprecated APIs are invented to be a replacement of acpi_get_table()
during the early stage so that the early mapped pointer will not be stored
in ACPICA core and thus the late stage acpi_get_table() won't return a
wrong pointer. The mapping size is returned just because it is required by
early_acpi_os_unmap_memory() to unmap the pointer during early stage.
But as the mapping size equals to the acpi_table_header.length
(see acpi_tb_init_table_descriptor() and acpi_tb_validate_table()), when
such a convenient result is returned, driver code will start to use it
instead of accessing acpi_table_header to obtain the length.
Thus this patch cleans up the drivers by replacing returned table size with
acpi_table_header.length, and should be a no-op.
Reported-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/iommu/dmar.c')
| -rw-r--r-- | drivers/iommu/dmar.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index 58470f5ced04..be74545a416a 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -68,7 +68,6 @@ DECLARE_RWSEM(dmar_global_lock); LIST_HEAD(dmar_drhd_units); struct acpi_table_header * __initdata dmar_tbl; -static acpi_size dmar_tbl_size; static int dmar_dev_scope_status = 1; static unsigned long dmar_seq_ids[BITS_TO_LONGS(DMAR_UNITS_SUPPORTED)]; @@ -541,9 +540,7 @@ static int __init dmar_table_detect(void) acpi_status status = AE_OK; /* if we could find DMAR table, then there are DMAR devices */ - status = acpi_get_table_with_size(ACPI_SIG_DMAR, 0, - (struct acpi_table_header **)&dmar_tbl, - &dmar_tbl_size); + status = acpi_get_table(ACPI_SIG_DMAR, 0, &dmar_tbl); if (ACPI_SUCCESS(status) && !dmar_tbl) { pr_warn("Unable to map DMAR\n"); @@ -904,7 +901,7 @@ int __init detect_intel_iommu(void) x86_init.iommu.iommu_init = intel_iommu_init; #endif - early_acpi_os_unmap_memory((void __iomem *)dmar_tbl, dmar_tbl_size); + acpi_put_table(dmar_tbl); dmar_tbl = NULL; up_write(&dmar_global_lock); |