diff options
Diffstat (limited to 'drivers/acpi/acpica/rsaddr.c')
| -rw-r--r-- | drivers/acpi/acpica/rsaddr.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/acpi/acpica/rsaddr.c b/drivers/acpi/acpica/rsaddr.c index 5737c3af1902..fff48001d7ef 100644 --- a/drivers/acpi/acpica/rsaddr.c +++ b/drivers/acpi/acpica/rsaddr.c @@ -272,12 +272,17 @@ u8 acpi_rs_get_address_common(struct acpi_resource *resource, union aml_resource *aml) { + struct aml_resource_address address; + ACPI_FUNCTION_ENTRY(); + /* Avoid undefined behavior: member access within misaligned address */ + + memcpy(&address, aml, sizeof(address)); + /* Validate the Resource Type */ - if ((aml->address.resource_type > 2) && - (aml->address.resource_type < 0xC0)) { + if ((address.resource_type > 2) && (address.resource_type < 0xC0)) { return (FALSE); } @@ -298,7 +303,7 @@ acpi_rs_get_address_common(struct acpi_resource *resource, /* Generic resource type, just grab the type_specific byte */ resource->data.address.info.type_specific = - aml->address.specific_flags; + address.specific_flags; } return (TRUE); |