@@ -1033,6 +1033,10 @@ static int acpi_data_prop_read_single(const struct acpi_device_data *data,
int ret = 0; \
\
for (i = 0; i < __nval; i++) { \
+ if (__items->type == ACPI_TYPE_BUFFER) { \
+ __val[i] = __items->buffer.pointer[i]; \
+ continue; \
+ } \
if (__items[i].type != ACPI_TYPE_INTEGER) { \
ret = -EPROTO; \
break; \
@@ -1092,18 +1096,41 @@ static int acpi_data_prop_read(const struct acpi_device_data *data,
}
ret = acpi_data_get_property_array(data, propname, ACPI_TYPE_ANY, &obj);
+ if (ret && proptype >= DEV_PROP_U8 && proptype <= DEV_PROP_U64)
+ ret = acpi_data_get_property(data, propname, ACPI_TYPE_BUFFER,
+ &obj);
if (ret)
return ret;
- if (!val)
+ if (!val) {
+ if (obj->type == ACPI_TYPE_BUFFER)
+ return obj->buffer.length;
+
return obj->package.count;
+ }
- if (proptype != DEV_PROP_STRING && nval > obj->package.count)
- return -EOVERFLOW;
+ switch (proptype) {
+ case DEV_PROP_STRING:
+ break;
+ case DEV_PROP_U8 ... DEV_PROP_U64:
+ if (obj->type == ACPI_TYPE_BUFFER) {
+ if (nval > obj->buffer.length)
+ return -EOVERFLOW;
+ break;
+ }
+ fallthrough;
+ default:
+ if (nval > obj->package.count)
+ return -EOVERFLOW;
+ break;
+ }
if (nval == 0)
return -EINVAL;
- items = obj->package.elements;
+ if (obj->type != ACPI_TYPE_BUFFER)
+ items = obj->package.elements;
+ else
+ items = obj;
switch (proptype) {
case DEV_PROP_U8:
Instead of adding a new property type, read buffer properties as integers. Even though the internal representation in ACPI is different, the data type is the same (byte) than on 8-bit integers. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> --- drivers/acpi/property.c | 35 +++++++++++++++++++++++++++++++---- 1 file changed, 31 insertions(+), 4 deletions(-)