ACPI / osl: Remove acpi_get_table_with_size()/early_acpi_os_unmap_memory() users
authorLv Zheng <lv.zheng@intel.com>
Wed, 14 Dec 2016 07:04:39 +0000 (15:04 +0800)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 21 Dec 2016 01:36:38 +0000 (02:36 +0100)
commit6b11d1d677132816252004426ef220ccd3c92d2f
treea512975fe6a4602264de5cbccd8926d0c121a0e6
parent66360faa4333babc53836c7b59a0cff68cb0a9c6
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>
arch/arm64/kernel/acpi.c
drivers/acpi/nfit/core.c
drivers/acpi/processor_core.c
drivers/acpi/spcr.c
drivers/acpi/tables.c
drivers/gpu/drm/amd/amdgpu/amdgpu_bios.c
drivers/gpu/drm/radeon/radeon_bios.c
drivers/iommu/amd_iommu_init.c
drivers/iommu/dmar.c
drivers/mailbox/pcc.c