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Revert "ACPICA: Remove obsolete acpi_os_validate_address interface" 

This reverts commit f9ca058430.

which caused a regression:

http://bugzilla.kernel.org/show_bug.cgi?id=13620

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2009-07-27 18:42:38 -04:00
parent 4be3bd7849
commit 7cb7f45c7f
4 changed files with 35 additions and 0 deletions
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1
drivers/acpi/acpica/acobject.h
View File

@ -97,6 +97,7 @@
#define AOPOBJ_OBJECT_INITIALIZED 0x08
#define AOPOBJ_SETUP_COMPLETE 0x10
#define AOPOBJ_SINGLE_DATUM 0x20
#define AOPOBJ_INVALID 0x40 /* Used if host OS won't allow an op_region address */
/******************************************************************************
*

24
drivers/acpi/acpica/dsopcode.c
View File

@ -397,6 +397,30 @@ acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc)
status = acpi_ds_execute_arguments(node, acpi_ns_get_parent_node(node),
extra_desc->extra.aml_length,
extra_desc->extra.aml_start);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
/* Validate the region address/length via the host OS */
status = acpi_os_validate_address(obj_desc->region.space_id,
obj_desc->region.address,
(acpi_size) obj_desc->region.length,
acpi_ut_get_node_name(node));
if (ACPI_FAILURE(status)) {
/*
* Invalid address/length. We will emit an error message and mark
* the region as invalid, so that it will cause an additional error if
* it is ever used. Then return AE_OK.
*/
ACPI_EXCEPTION((AE_INFO, status,
"During address validation of OpRegion [%4.4s]",
node->name.ascii));
obj_desc->common.flags |= AOPOBJ_INVALID;
status = AE_OK;
}
return_ACPI_STATUS(status);
}

6
drivers/acpi/acpica/exfldio.c
View File

@ -113,6 +113,12 @@ acpi_ex_setup_region(union acpi_operand_object *obj_desc,
}
}
/* Exit if Address/Length have been disallowed by the host OS */
if (rgn_desc->common.flags & AOPOBJ_INVALID) {
return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
}
/*
* Exit now for SMBus address space, it has a non-linear address space
* and the request cannot be directly validated

4
include/acpi/acpiosxf.h
View File

@ -242,6 +242,10 @@ acpi_os_derive_pci_id(acpi_handle rhandle,
acpi_status acpi_os_validate_interface(char *interface);
acpi_status acpi_osi_invalidate(char* interface);
acpi_status
acpi_os_validate_address(u8 space_id, acpi_physical_address address,
acpi_size length, char *name);
u64 acpi_os_get_timer(void);
acpi_status acpi_os_signal(u32 function, void *info);