[24/26] drm/radeon/kms: fix regression is handling >2 heads on

[Greg KH]

3.0-stable review patch.  If anyone has any objections, please let us know.

------------------
 cedar/caicos

From: Alex Deucher <alexander.deucher@xxxxxxx>

commit 33ae1827d6c3c79c5957536ec29d5a8780623147 upstream.

Need to add support for 4 crtcs when setting the possible crtcs
for the encoders.

Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 drivers/gpu/drm/radeon/radeon_encoders.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/gpu/drm/radeon/radeon_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_encoders.c
@@ -2323,6 +2323,9 @@ radeon_add_atom_encoder(struct drm_devic
 	default:
 		encoder->possible_crtcs = 0x3;
 		break;
+	case 4:
+		encoder->possible_crtcs = 0xf;
+		break;
 	case 6:
 		encoder->possible_crtcs = 0x3f;
 		break;


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