From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BC33755C12; Mon, 11 Dec 2023 18:35:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="CoYK6b2B" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3FBD0C433CC; Mon, 11 Dec 2023 18:35:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1702319706; bh=VbGgsFu0kUEeKO0TYgdv/Qji4/P+cs3xXmCFkj6x+sc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CoYK6b2BkSY0DBFDy0tTiQ43ua3d12q/RDSWFvoS2u8NQ3rwmN0lBiB/EQb2Nv+9k gg777friqZ8bQ0dHj+azrE3qYP2RdSo8xZ1g1enI4G4XKdjHOlPfHRt7vsApOVM0de 9wctZppPWUTZfC6n57rU+n7rwl1plzX5P1Vt5VFM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Stanislav Lisovskiy , =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= , Jani Nikula Subject: [PATCH 6.6 174/244] drm/i915/mst: Reject modes that require the bigjoiner Date: Mon, 11 Dec 2023 19:21:07 +0100 Message-ID: <20231211182053.729498669@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231211182045.784881756@linuxfoundation.org> References: <20231211182045.784881756@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ville Syrjälä commit dd7eb65c493615fda7d459501c3d4a46e00ea5ba upstream. We have no bigjoiner support in the MST code, so .mode_valid() pretending otherwise is just going to result black screens for users. Reject any mode that needs the joiner. Cc: stable@vger.kernel.org Cc: Stanislav Lisovskiy Fixes: d51f25eb479a ("drm/i915: Add DSC support to MST path") Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20231127145028.4899-3-ville.syrjala@linux.intel.com Reviewed-by: Jani Nikula (cherry picked from commit 9c058492b16f90bb772cb0dad567e8acc68e155d) Signed-off-by: Jani Nikula Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/i915/display/intel_dp_mst.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -955,6 +955,10 @@ intel_dp_mst_mode_valid_ctx(struct drm_c if (intel_dp_need_bigjoiner(intel_dp, mode->hdisplay, target_clock)) { bigjoiner = true; max_dotclk *= 2; + + /* TODO: add support for bigjoiner */ + *status = MODE_CLOCK_HIGH; + return 0; } if (DISPLAY_VER(dev_priv) >= 10 &&