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path: root/drivers/acpi/acpica/exregion.c
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Diffstat (limited to 'drivers/acpi/acpica/exregion.c')
-rw-r--r--drivers/acpi/acpica/exregion.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
index 486b2e5661b..531000fc77d 100644
--- a/drivers/acpi/acpica/exregion.c
+++ b/drivers/acpi/acpica/exregion.c
@@ -105,7 +105,7 @@ acpi_ex_system_memory_space_handler(u32 function,
break;
default:
- ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %d",
+ ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %u",
bit_width));
return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
}
@@ -173,7 +173,7 @@ acpi_ex_system_memory_space_handler(u32 function,
mem_info->mapped_logical_address = acpi_os_map_memory((acpi_physical_address) address, map_length);
if (!mem_info->mapped_logical_address) {
ACPI_ERROR((AE_INFO,
- "Could not map memory at %8.8X%8.8X, size %X",
+ "Could not map memory at 0x%8.8X%8.8X, size %u",
ACPI_FORMAT_NATIVE_UINT(address),
(u32) map_length));
mem_info->mapped_length = 0;
@@ -491,8 +491,10 @@ acpi_ex_data_table_space_handler(u32 function,
{
ACPI_FUNCTION_TRACE(ex_data_table_space_handler);
- /* Perform the memory read or write */
-
+ /*
+ * Perform the memory read or write. The bit_width was already
+ * validated.
+ */
switch (function) {
case ACPI_READ:
@@ -502,9 +504,14 @@ acpi_ex_data_table_space_handler(u32 function,
break;
case ACPI_WRITE:
+
+ ACPI_MEMCPY(ACPI_PHYSADDR_TO_PTR(address),
+ ACPI_CAST_PTR(char, value), ACPI_DIV_8(bit_width));
+ break;
+
default:
- return_ACPI_STATUS(AE_SUPPORT);
+ return_ACPI_STATUS(AE_BAD_PARAMETER);
}
return_ACPI_STATUS(AE_OK);