From: Chris Wilson Date: Fri, 27 Nov 2020 21:00:59 +0000 (+0000) Subject: drm/i915/display: Suppress "Combo PHY A HW state changed unexpectedly" X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5cc2b61fb251d06f732b14b04f8f6510f3b31365;p=linux.git drm/i915/display: Suppress "Combo PHY A HW state changed unexpectedly" We know a problem exists in the ifwi shipped with the early pre-production Tigerlake and DG1 prototypes, later revisions are fine. However, CI still relies on the earlier ifwi and we grow tired of the volume of warnings as we wait for replacements. Since the warning is a bug, we do not want to lose the warning in its entirety, so only suppress the warning for the platforms currently exhibiting the issue. Suggested-by: José Roberto de Souza Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2411 Signed-off-by: Chris Wilson Cc: José Roberto de Souza Reviewed-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20201127210059.10702-1-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/display/intel_combo_phy.c b/drivers/gpu/drm/i915/display/intel_combo_phy.c index d5ad61e4083e5..996ae0608a621 100644 --- a/drivers/gpu/drm/i915/display/intel_combo_phy.c +++ b/drivers/gpu/drm/i915/display/intel_combo_phy.c @@ -427,10 +427,22 @@ static void icl_combo_phys_uninit(struct drm_i915_private *dev_priv) u32 val; if (phy == PHY_A && - !icl_combo_phy_verify_state(dev_priv, phy)) - drm_warn(&dev_priv->drm, - "Combo PHY %c HW state changed unexpectedly\n", - phy_name(phy)); + !icl_combo_phy_verify_state(dev_priv, phy)) { + if (IS_TIGERLAKE(dev_priv) || IS_DG1(dev_priv)) { + /* + * A known problem with old ifwi: + * https://gitlab.freedesktop.org/drm/intel/-/issues/2411 + * Suppress the warning for CI. Remove ASAP! + */ + drm_dbg_kms(&dev_priv->drm, + "Combo PHY %c HW state changed unexpectedly\n", + phy_name(phy)); + } else { + drm_warn(&dev_priv->drm, + "Combo PHY %c HW state changed unexpectedly\n", + phy_name(phy)); + } + } if (!has_phy_misc(dev_priv, phy)) goto skip_phy_misc;