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path: root/drivers/acpi/tables/tbxface.c
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Diffstat (limited to 'drivers/acpi/tables/tbxface.c')
-rw-r--r--drivers/acpi/tables/tbxface.c58
1 files changed, 35 insertions, 23 deletions
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c
index 77439fc..78ce542 100644
--- a/drivers/acpi/tables/tbxface.c
+++ b/drivers/acpi/tables/tbxface.c
@@ -82,9 +82,8 @@ acpi_status
acpi_initialize_tables(struct acpi_table_desc *initial_table_array,
u32 initial_table_count, u8 allow_resize)
{
- acpi_physical_address address;
+ acpi_physical_address rsdp_address;
acpi_status status;
- struct acpi_table_rsdp *rsdp;
ACPI_FUNCTION_TRACE(acpi_initialize_tables);
@@ -94,7 +93,7 @@ acpi_initialize_tables(struct acpi_table_desc *initial_table_array,
*/
if (!initial_table_array) {
acpi_gbl_root_table_list.size = initial_table_count;
- acpi_gbl_root_table_list.flags = ACPI_TABLE_FLAGS_ALLOW_RESIZE;
+ acpi_gbl_root_table_list.flags = ACPI_ROOT_ALLOW_RESIZE;
status = acpi_tb_resize_root_table_list();
if (ACPI_FAILURE(status)) {
@@ -103,37 +102,33 @@ acpi_initialize_tables(struct acpi_table_desc *initial_table_array,
} else {
/* Root Table Array has been statically allocated by the host */
+ ACPI_MEMSET(initial_table_array,
+ initial_table_count *
+ sizeof(struct acpi_table_desc), 0);
+
acpi_gbl_root_table_list.tables = initial_table_array;
acpi_gbl_root_table_list.size = initial_table_count;
- acpi_gbl_root_table_list.flags = ACPI_TABLE_ORIGIN_UNKNOWN;
+ acpi_gbl_root_table_list.flags = ACPI_ROOT_ORIGIN_UNKNOWN;
if (allow_resize) {
- acpi_gbl_root_table_list.flags =
- ACPI_TABLE_FLAGS_ALLOW_RESIZE;
+ acpi_gbl_root_table_list.flags |=
+ ACPI_ROOT_ALLOW_RESIZE;
}
}
- /* Get the RSDP and map it */
+ /* Get the address of the RSDP */
- address = acpi_os_get_root_pointer();
- if (!address) {
+ rsdp_address = acpi_os_get_root_pointer();
+ if (!rsdp_address) {
return_ACPI_STATUS(AE_NOT_FOUND);
}
- rsdp = acpi_os_map_memory(address, sizeof(struct acpi_table_rsdp));
- if (!rsdp) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- ACPI_INFO((AE_INFO, "%.8s @ 0x%p",
- rsdp->signature, ACPI_CAST_PTR(void, address)));
-
/*
* Get the root table (RSDT or XSDT) and extract all entries to the local
* Root Table Array. This array contains the information of the RSDT/XSDT
* in a common, more useable format.
*/
- status = acpi_tb_parse_root_table(rsdp, ACPI_TABLE_ORIGIN_MAPPED);
- acpi_os_unmap_memory(rsdp, sizeof(struct acpi_table_rsdp));
+ status =
+ acpi_tb_parse_root_table(rsdp_address, ACPI_TABLE_ORIGIN_MAPPED);
return_ACPI_STATUS(status);
}
@@ -164,8 +159,7 @@ acpi_status acpi_reallocate_root_table(void)
* Only reallocate the root table if the host provided a static buffer
* for the table array in the call to acpi_initialize_tables.
*/
- if ((acpi_gbl_root_table_list.flags & ACPI_TABLE_ORIGIN_MASK) !=
- ACPI_TABLE_ORIGIN_UNKNOWN) {
+ if (acpi_gbl_root_table_list.flags & ACPI_ROOT_ORIGIN_ALLOCATED) {
return_ACPI_STATUS(AE_SUPPORT);
}
@@ -185,7 +179,7 @@ acpi_status acpi_reallocate_root_table(void)
acpi_gbl_root_table_list.size = acpi_gbl_root_table_list.count;
acpi_gbl_root_table_list.tables = tables;
acpi_gbl_root_table_list.flags =
- ACPI_TABLE_ORIGIN_ALLOCATED | ACPI_TABLE_FLAGS_ALLOW_RESIZE;
+ ACPI_ROOT_ORIGIN_ALLOCATED | ACPI_ROOT_ALLOW_RESIZE;
return_ACPI_STATUS(AE_OK);
}
@@ -247,6 +241,12 @@ acpi_get_table_header(char *signature,
acpi_native_uint i;
acpi_native_uint j;
+ /* Parameter validation */
+
+ if (!signature || !out_table_header) {
+ return (AE_BAD_PARAMETER);
+ }
+
/*
* Walk the root table list
*/
@@ -267,7 +267,7 @@ acpi_get_table_header(char *signature,
acpi_gbl_root_table_list.tables[i].
flags & ACPI_TABLE_ORIGIN_MASK);
- if (!out_table_header) {
+ if (!(*out_table_header)) {
return (AE_NO_MEMORY);
}
@@ -339,6 +339,12 @@ acpi_get_table(char *signature,
acpi_native_uint j;
acpi_status status;
+ /* Parameter validation */
+
+ if (!signature || !out_table) {
+ return (AE_BAD_PARAMETER);
+ }
+
/*
* Walk the root table list
*/
@@ -387,6 +393,12 @@ acpi_get_table_by_index(acpi_native_uint table_index,
ACPI_FUNCTION_TRACE(acpi_get_table_by_index);
+ /* Parameter validation */
+
+ if (!table) {
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
+ }
+
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
/* Validate index */
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