[Nouveau] [PATCH 2/7] drm/nouveau: fix backlight mask on ppc powerbook

[Ilia Mirkin]

This code was originally moved to using nv_mask by d31e078d84. This
should not have any actual effect since the mask isn't applied to the
value.

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
---

Not even compile-tested, but the change should be fairly self-evident.

 drivers/gpu/drm/nouveau/dispnv04/dfp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/dispnv04/dfp.c b/drivers/gpu/drm/nouveau/dispnv04/dfp.c
index 93dd23ff..caf464d 100644
--- a/drivers/gpu/drm/nouveau/dispnv04/dfp.c
+++ b/drivers/gpu/drm/nouveau/dispnv04/dfp.c
@@ -493,7 +493,7 @@ static void nv04_dfp_update_backlight(struct drm_encoder *encoder, int mode)
 	if (dev->pci_device == 0x0174 || dev->pci_device == 0x0179 ||
 	    dev->pci_device == 0x0189 || dev->pci_device == 0x0329) {
 		if (mode == DRM_MODE_DPMS_ON) {
-			nv_mask(device, NV_PBUS_DEBUG_DUALHEAD_CTL, 0, 1 << 31);
+			nv_mask(device, NV_PBUS_DEBUG_DUALHEAD_CTL, 1 << 31, 1 << 31);
 			nv_mask(device, NV_PCRTC_GPIO_EXT, 3, 1);
 		} else {
 			nv_mask(device, NV_PBUS_DEBUG_DUALHEAD_CTL, 1 << 31, 0);
-- 
1.8.1.5