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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2014-02-20 17:23:16 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-02-20 21:19:47 +0100 |
| commit | e284175a96e5af087ea7806b3e38282b524ff5b9 (patch) | |
| tree | f5c085ac2ac29ecd34543394a4991d16895994d6 /virt | |
| parent | 6d0abeca3242a88cab8232e4acd7e2bf088f3bc2 (diff) | |
| download | op-kernel-dev-e284175a96e5af087ea7806b3e38282b524ff5b9.zip op-kernel-dev-e284175a96e5af087ea7806b3e38282b524ff5b9.tar.gz | |
ACPI / nouveau: fix probing regression related to _DSM
Fix regression caused by commit b072e53, 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: b072e53b0a27 (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>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions
