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-rw-r--r--drivers/acpi/acpica/tbxface.c17
-rw-r--r--drivers/acpi/bus.c6
-rw-r--r--drivers/acpi/osl.c11
-rw-r--r--drivers/acpi/tables.c20
4 files changed, 37 insertions, 17 deletions
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c
index c3e841f3cde..ab0aff3c7d6 100644
--- a/drivers/acpi/acpica/tbxface.c
+++ b/drivers/acpi/acpica/tbxface.c
@@ -365,7 +365,7 @@ ACPI_EXPORT_SYMBOL(acpi_unload_table_id)
/*******************************************************************************
*
- * FUNCTION: acpi_get_table
+ * FUNCTION: acpi_get_table_with_size
*
* PARAMETERS: Signature - ACPI signature of needed table
* Instance - Which instance (for SSDTs)
@@ -377,8 +377,9 @@ ACPI_EXPORT_SYMBOL(acpi_unload_table_id)
*
*****************************************************************************/
acpi_status
-acpi_get_table(char *signature,
- u32 instance, struct acpi_table_header **out_table)
+acpi_get_table_with_size(char *signature,
+ u32 instance, struct acpi_table_header **out_table,
+ acpi_size *tbl_size)
{
u32 i;
u32 j;
@@ -408,6 +409,7 @@ acpi_get_table(char *signature,
acpi_tb_verify_table(&acpi_gbl_root_table_list.tables[i]);
if (ACPI_SUCCESS(status)) {
*out_table = acpi_gbl_root_table_list.tables[i].pointer;
+ *tbl_size = acpi_gbl_root_table_list.tables[i].length;
}
if (!acpi_gbl_permanent_mmap) {
@@ -420,6 +422,15 @@ acpi_get_table(char *signature,
return (AE_NOT_FOUND);
}
+acpi_status
+acpi_get_table(char *signature,
+ u32 instance, struct acpi_table_header **out_table)
+{
+ acpi_size tbl_size;
+
+ return acpi_get_table_with_size(signature,
+ instance, out_table, &tbl_size);
+}
ACPI_EXPORT_SYMBOL(acpi_get_table)
/*******************************************************************************
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();
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index b3193ec0a2e..d1dd5160daa 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -274,12 +274,19 @@ EXPORT_SYMBOL_GPL(acpi_os_map_memory);
void acpi_os_unmap_memory(void __iomem * virt, acpi_size size)
{
- if (acpi_gbl_permanent_mmap) {
+ if (acpi_gbl_permanent_mmap)
iounmap(virt);
- }
+ else
+ __acpi_unmap_table(virt, size);
}
EXPORT_SYMBOL_GPL(acpi_os_unmap_memory);
+void early_acpi_os_unmap_memory(void __iomem * virt, acpi_size size)
+{
+ if (!acpi_gbl_permanent_mmap)
+ __acpi_unmap_table(virt, size);
+}
+
#ifdef ACPI_FUTURE_USAGE
acpi_status
acpi_os_get_physical_address(void *virt, acpi_physical_address * phys)
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index a8852952fac..fec1ae36d43 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -181,14 +181,15 @@ acpi_table_parse_entries(char *id,
struct acpi_subtable_header *entry;
unsigned int count = 0;
unsigned long table_end;
+ acpi_size tbl_size;
if (!handler)
return -EINVAL;
if (strncmp(id, ACPI_SIG_MADT, 4) == 0)
- acpi_get_table(id, acpi_apic_instance, &table_header);
+ acpi_get_table_with_size(id, acpi_apic_instance, &table_header, &tbl_size);
else
- acpi_get_table(id, 0, &table_header);
+ acpi_get_table_with_size(id, 0, &table_header, &tbl_size);
if (!table_header) {
printk(KERN_WARNING PREFIX "%4.4s not present\n", id);
@@ -206,8 +207,10 @@ acpi_table_parse_entries(char *id,
table_end) {
if (entry->type == entry_id
&& (!max_entries || count++ < max_entries))
- if (handler(entry, table_end))
+ if (handler(entry, table_end)) {
+ early_acpi_os_unmap_memory((char *)table_header, tbl_size);
return -EINVAL;
+ }
entry = (struct acpi_subtable_header *)
((unsigned long)entry + entry->length);
@@ -217,6 +220,7 @@ acpi_table_parse_entries(char *id,
"%i found\n", id, entry_id, count - max_entries, count);
}
+ early_acpi_os_unmap_memory((char *)table_header, tbl_size);
return count;
}
@@ -241,17 +245,19 @@ acpi_table_parse_madt(enum acpi_madt_type id,
int __init acpi_table_parse(char *id, acpi_table_handler handler)
{
struct acpi_table_header *table = NULL;
+ acpi_size tbl_size;
if (!handler)
return -EINVAL;
if (strncmp(id, ACPI_SIG_MADT, 4) == 0)
- acpi_get_table(id, acpi_apic_instance, &table);
+ acpi_get_table_with_size(id, acpi_apic_instance, &table, &tbl_size);
else
- acpi_get_table(id, 0, &table);
+ acpi_get_table_with_size(id, 0, &table, &tbl_size);
if (table) {
handler(table);
+ early_acpi_os_unmap_memory(table, tbl_size);
return 0;
} else
return 1;
@@ -265,8 +271,9 @@ int __init acpi_table_parse(char *id, acpi_table_handler handler)
static void __init check_multiple_madt(void)
{
struct acpi_table_header *table = NULL;
+ acpi_size tbl_size;
- acpi_get_table(ACPI_SIG_MADT, 2, &table);
+ acpi_get_table_with_size(ACPI_SIG_MADT, 2, &table, &tbl_size);
if (table) {
printk(KERN_WARNING PREFIX
"BIOS bug: multiple APIC/MADT found,"
@@ -275,6 +282,7 @@ static void __init check_multiple_madt(void)
"If \"acpi_apic_instance=%d\" works better, "
"notify linux-acpi@vger.kernel.org\n",
acpi_apic_instance ? 0 : 2);
+ early_acpi_os_unmap_memory(table, tbl_size);
} else
acpi_apic_instance = 0;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-16 15:38:43 +0000