The patch below does not apply to the 4.8-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable@xxxxxxxxxxxxxxx>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From a87848750ebc2c174879f5acaa1183044287fd03 Mon Sep 17 00:00:00 2001 From: Bob Paauwe <bob.j.paauwe@xxxxxxxxx> Date: Fri, 15 Jul 2016 14:59:02 +0100 Subject: [PATCH] drm/i915: Set legacy properties when using legacy gamma set IOCTL. (v2) The i915 driver is now using atomic properties and atomic commit to handle the legacy set gamma IOCTL. However, if the driver is configured without atomic (nuclear_pageflip = false), it won't update the legacy properties for degamma_lut, gamma_lut and ctm leaving them out of sync with the atomic version of the properties. Until the driver is full atomic, make sure we update the non-atomic version of the properties. v2: Update the comment with a FIXME. (Daniel) v3: Update arguments of the gamma_set vfunc (Lionel) v4: Fixed vfunc prototype (Lionel) igt-testcase: kms_pipe_color / legacy-gamma-reset-pipeX Cc: Daniel Vetter <daniel@xxxxxxxx> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx #v4.7 Signed-off-by: Bob Paauwe <bob.j.paauwe@xxxxxxxxx> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx> Link: http://patchwork.freedesktop.org/patch/msgid/1468591142-2253-1-git-send-email-lionel.g.landwerlin@xxxxxxxxx diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 9337d3a7b83d..fb7d8fc5b0e6 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -13924,8 +13924,50 @@ void intel_crtc_restore_mode(struct drm_crtc *crtc) #undef for_each_intel_crtc_masked +/* + * FIXME: Remove this once i915 is fully DRIVER_ATOMIC by calling + * drm_atomic_helper_legacy_gamma_set() directly. + */ +static int intel_atomic_legacy_gamma_set(struct drm_crtc *crtc, + u16 *red, u16 *green, u16 *blue, + uint32_t size) +{ + struct drm_device *dev = crtc->dev; + struct drm_mode_config *config = &dev->mode_config; + struct drm_crtc_state *state; + int ret; + + ret = drm_atomic_helper_legacy_gamma_set(crtc, red, green, blue, size); + if (ret) + return ret; + + /* + * Make sure we update the legacy properties so this works when + * atomic is not enabled. + */ + + state = crtc->state; + + drm_object_property_set_value(&crtc->base, + config->degamma_lut_property, + (state->degamma_lut) ? + state->degamma_lut->base.id : 0); + + drm_object_property_set_value(&crtc->base, + config->ctm_property, + (state->ctm) ? + state->ctm->base.id : 0); + + drm_object_property_set_value(&crtc->base, + config->gamma_lut_property, + (state->gamma_lut) ? + state->gamma_lut->base.id : 0); + + return 0; +} + static const struct drm_crtc_funcs intel_crtc_funcs = { - .gamma_set = drm_atomic_helper_legacy_gamma_set, + .gamma_set = intel_atomic_legacy_gamma_set, .set_config = drm_atomic_helper_set_config, .set_property = drm_atomic_helper_crtc_set_property, .destroy = intel_crtc_destroy, -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html