drm/nouveau: Don't try DDC on the dummy I2C channel.
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c b/drivers/gpu/drm/nouveau/nouveau_connector.c
index b1b22ba..a1473ff 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -104,7 +104,7 @@
int i;
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
- struct nouveau_i2c_chan *i2c;
+ struct nouveau_i2c_chan *i2c = NULL;
struct nouveau_encoder *nv_encoder;
struct drm_mode_object *obj;
int id;
@@ -117,7 +117,9 @@
if (!obj)
continue;
nv_encoder = nouveau_encoder(obj_to_encoder(obj));
- i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
+
+ if (nv_encoder->dcb->i2c_index < 0xf)
+ i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
if (i2c && nouveau_probe_i2c_addr(i2c, 0x50)) {
*pnv_encoder = nv_encoder;