mirror of https://gitee.com/openkylin/linux.git
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>
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2dc5d2ec05
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4ca2b7120c
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@ -104,7 +104,7 @@ nouveau_connector_ddc_detect(struct drm_connector *connector,
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int i;
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int i;
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for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
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for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
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struct nouveau_i2c_chan *i2c;
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struct nouveau_i2c_chan *i2c = NULL;
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struct nouveau_encoder *nv_encoder;
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struct nouveau_encoder *nv_encoder;
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struct drm_mode_object *obj;
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struct drm_mode_object *obj;
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int id;
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int id;
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@ -117,7 +117,9 @@ nouveau_connector_ddc_detect(struct drm_connector *connector,
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if (!obj)
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if (!obj)
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continue;
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continue;
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nv_encoder = nouveau_encoder(obj_to_encoder(obj));
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nv_encoder = nouveau_encoder(obj_to_encoder(obj));
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i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
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if (nv_encoder->dcb->i2c_index < 0xf)
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i2c = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index);
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if (i2c && nouveau_probe_i2c_addr(i2c, 0x50)) {
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if (i2c && nouveau_probe_i2c_addr(i2c, 0x50)) {
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*pnv_encoder = nv_encoder;
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*pnv_encoder = nv_encoder;
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