diff options
| -rw-r--r-- | drivers/acpi/acpica/exregion.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c index a8703cc20ad..531000fc77d 100644 --- a/drivers/acpi/acpica/exregion.c +++ b/drivers/acpi/acpica/exregion.c @@ -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); |