-
Jiang Liu authored
Fix regression caused by commit b072e53b, which breaks loading nouveau driver on optimus laptops. On some platforms, ACPI _DSM method (nouveau_op_dsm_muid, function 0) has special requirements on the fourth parameter, which is different from ACPI specifications. So revert to the private implementation to check availability of _DSM functions instead of using common acpi_check_dsm() interface. Fixes: b072e53b (ACPI / nouveau: replace open-coded _DSM code with helper functions) Reported-and-tested-by:
Maarten Lankhorst <maarten.lankhorst@canonical.com> [rjw: Subject] Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com>
e284175a