-stable review patch. If anyone has any objections, please let us know. --------------------- From: Zhenyu Wang upstream commit: ebcc8f2eade76946dbb5d5c545b91f8157051aa8 If there's no real property change, don't need to set TV mode again. Signed-off-by: Zhenyu Wang [anholt: checkpatch.pl fix] Signed-off-by: Eric Anholt Signed-off-by: Chris Wright --- drivers/gpu/drm/i915/intel_tv.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-) --- a/drivers/gpu/drm/i915/intel_tv.c +++ b/drivers/gpu/drm/i915/intel_tv.c @@ -1559,32 +1559,45 @@ intel_tv_set_property(struct drm_connect struct intel_output *intel_output = to_intel_output(connector); struct intel_tv_priv *tv_priv = intel_output->dev_priv; int ret = 0; + bool changed = false; ret = drm_connector_property_set_value(connector, property, val); if (ret < 0) goto out; - if (property == dev->mode_config.tv_left_margin_property) + if (property == dev->mode_config.tv_left_margin_property && + tv_priv->margin[TV_MARGIN_LEFT] != val) { tv_priv->margin[TV_MARGIN_LEFT] = val; - else if (property == dev->mode_config.tv_right_margin_property) + changed = true; + } else if (property == dev->mode_config.tv_right_margin_property && + tv_priv->margin[TV_MARGIN_RIGHT] != val) { tv_priv->margin[TV_MARGIN_RIGHT] = val; - else if (property == dev->mode_config.tv_top_margin_property) + changed = true; + } else if (property == dev->mode_config.tv_top_margin_property && + tv_priv->margin[TV_MARGIN_TOP] != val) { tv_priv->margin[TV_MARGIN_TOP] = val; - else if (property == dev->mode_config.tv_bottom_margin_property) + changed = true; + } else if (property == dev->mode_config.tv_bottom_margin_property && + tv_priv->margin[TV_MARGIN_BOTTOM] != val) { tv_priv->margin[TV_MARGIN_BOTTOM] = val; - else if (property == dev->mode_config.tv_mode_property) { + changed = true; + } else if (property == dev->mode_config.tv_mode_property) { if (val >= NUM_TV_MODES) { ret = -EINVAL; goto out; } + if (!strcmp(tv_priv->tv_format, tv_modes[val].name)) + goto out; + tv_priv->tv_format = tv_modes[val].name; - intel_tv_mode_set(&intel_output->enc, NULL, NULL); + changed = true; } else { ret = -EINVAL; goto out; } - intel_tv_mode_set(&intel_output->enc, NULL, NULL); + if (changed) + intel_tv_mode_set(&intel_output->enc, NULL, NULL); out: return ret; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/