diff options
| author | Andreas Heider <andreas@meetr.de> | 2012-05-21 00:14:50 +0100 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2012-05-24 16:56:34 +1000 |
| commit | 2f3787aa439ae0d34e4658400c1139a7541bec1d (patch) | |
| tree | b0465658f2a4593eea40af2d1865917490b5d432 | |
| parent | 42eddbd7b2b5cc9bbb4c918a3294b6ee9dd53c59 (diff) | |
drm/nouveau: Check dsm on switcheroo unregister
Currently vga_switcheroo_unregister_handler is called unconditionally when
nouveau is unloaded, even when nouveau never registered a handler. This
interferes with other switcheroo handlers, as vga_switcheroo doesn't check who
called unregister_handler, but simply unregisters the current handler. This
patch adds a check so unregister is only called if a handler was registered by
nouveau before.
Signed-off-by: Andreas Heider <andreas@meetr.de>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_acpi.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c index 284bd25d5d21..fc841e87b343 100644 --- a/drivers/gpu/drm/nouveau/nouveau_acpi.c +++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c @@ -338,7 +338,8 @@ void nouveau_switcheroo_optimus_dsm(void) void nouveau_unregister_dsm_handler(void) { - vga_switcheroo_unregister_handler(); + if (nouveau_dsm_priv.optimus_detected || nouveau_dsm_priv.dsm_detected) + vga_switcheroo_unregister_handler(); } /* retrieve the ROM in 4k blocks */ |