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authorVille Syrjälä <ville.syrjala@linux.intel.com>2019-04-11 19:49:25 +0300
committerRodrigo Vivi <rodrigo.vivi@intel.com>2019-04-15 09:36:42 -0700
commitf5c58ba18ab8ea2169670ed880e4d31ed772ad10 (patch)
treeabf75402bce41d62c9bec5b5085c2012953638a6 /drivers/gpu
parent5aae7832d1b4ec614996ea0f4fafc4d9855ec0b0 (diff)
downloadlinux-f5c58ba18ab8ea2169670ed880e4d31ed772ad10.tar.bz2
drm/i915: Restore correct bxt_ddi_phy_calc_lane_lat_optim_mask() calculation
We are no longer calling bxt_ddi_phy_calc_lane_lat_optim_mask() when intel{hdmi,dp}_compute_config() succeeds, and instead only call it when those fail. This is fallout from the bool->int .compute_config() conversion which failed to invert the return value check before calling bxt_ddi_phy_calc_lane_lat_optim_mask(). Let's just replace it with an early bailout so that it's harder to miss. This restores the correct latency optim setting calculation (which could fix some real failures), and avoids the MISSING_CASE() from bxt_ddi_phy_calc_lane_lat_optim_mask() after intel{hdmi,dp}_compute_config() has failed. Cc: Lyude Paul <lyude@redhat.com> Fixes: 204474a6b859 ("drm/i915: Pass down rc in intel_encoder->compute_config()") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109373 Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190411164925.28491-1-ville.syrjala@linux.intel.com Reviewed-by: Lyude Paul <lyude@redhat.com> (cherry picked from commit 7a412b8f60cd57ab7dcb72ab701fde2bf81752eb) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/i915/intel_ddi.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index ab4e60dfd6a3..98cea1f4b3bf 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -3862,14 +3862,16 @@ static int intel_ddi_compute_config(struct intel_encoder *encoder,
ret = intel_hdmi_compute_config(encoder, pipe_config, conn_state);
else
ret = intel_dp_compute_config(encoder, pipe_config, conn_state);
+ if (ret)
+ return ret;
- if (IS_GEN9_LP(dev_priv) && ret)
+ if (IS_GEN9_LP(dev_priv))
pipe_config->lane_lat_optim_mask =
bxt_ddi_phy_calc_lane_lat_optim_mask(pipe_config->lane_count);
intel_ddi_compute_min_voltage_level(dev_priv, pipe_config);
- return ret;
+ return 0;
}