acpi_status
acpi_get_possible_resources (
acpi_handle device_handle,
struct acpi_buffer *ret_buffer)
{
acpi_status status;
ACPI_FUNCTION_TRACE ("acpi_get_possible_resources");
/*
* Must have a valid handle and buffer, So we have to have a handle
* and a return buffer structure, and if there is a non-zero buffer length
* we also need a valid pointer in the buffer. If it's a zero buffer length,
* we'll be returning the needed buffer size, so keep going.
*/
if (!device_handle) {
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
status = acpi_ut_validate_buffer (ret_buffer);
if (ACPI_FAILURE (status)) {
return_ACPI_STATUS (status);
}
status = acpi_rs_get_prs_method_data (device_handle, ret_buffer);
return_ACPI_STATUS (status);
}
ACPI_STATUS
acpi_get_possible_resources (
ACPI_HANDLE device_handle,
ACPI_BUFFER *ret_buffer)
{
ACPI_STATUS status;
/*
* Must have a valid handle and buffer, So we have to have a handle
* and a return buffer structure, and if there is a non-zero buffer length
* we also need a valid pointer in the buffer. If it's a zero buffer length,
* we'll be returning the needed buffer size, so keep going.
*/
if ((!device_handle) ||
(!ret_buffer) ||
((ret_buffer->length) && (!ret_buffer->pointer)))
{
return (AE_BAD_PARAMETER);
}
status = acpi_rs_get_prs_method_data (device_handle, ret_buffer);
return (status);
}
/*******************************************************************************
*
* FUNCTION: acpi_get_possible_resources
*
* PARAMETERS: device_handle - Handle to the device object for the
* device we are querying
* ret_buffer - Pointer to a buffer to receive the
* resources for the device
*
* RETURN: Status
*
* DESCRIPTION: This function is called to get a list of the possible resources
* for a specific device. The caller must first acquire a handle
* for the desired device. The resource data is placed in the
* buffer pointed to by the ret_buffer variable.
*
* If the function fails an appropriate status will be returned
* and the value of ret_buffer is undefined.
*
******************************************************************************/
acpi_status
acpi_get_possible_resources(acpi_handle device_handle,
struct acpi_buffer *ret_buffer)
{
acpi_status status;
struct acpi_namespace_node *node;
ACPI_FUNCTION_TRACE(acpi_get_possible_resources);
/* Validate parameters then dispatch to internal routine */
status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node);
if (ACPI_FAILURE(status)) {
return_ACPI_STATUS(status);
}
status = acpi_rs_get_prs_method_data(node, ret_buffer);
return_ACPI_STATUS(status);
}
