From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 498CC1EA65; Thu, 28 May 2026 20:29:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780000163; cv=none; b=tM9EpgWq3FubqrwTgOErLnwgHX687zA6YCcT/2go2JVBn6FJpqYqZVvi7KUclVuBEdRvwRRqH2ZpeWM9bZXNX9Z+xqRb2x5DUTD4NrMnH8vIv6hH+5WF4etjkHnnIeIjbsSoy8lyOxJgM9XBAMLWcpG9NV/981ApP2pRBdgwrSw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780000163; c=relaxed/simple; bh=5OGdFqo2oWZ5l713qJMvkpU0PWQmv9u8eYDs6x+3UDo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=IkxBn4icO7NfKZEPlOfvF3EXTjhnpzsNtLXp0ptH3DSgU4qj3GSw1sRvcgFhQw1RpSnTFP9mfpnXlJUyyf+m3Vr5fzO/Z8oNEliArGShSstPAseJ4rlpNvLvmlGr3sy9mPIHftl4NhMl4DvZzj6ErWMeRzQ+cfkADVxDBYFTw7s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Dc86kzx+; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Dc86kzx+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A84141F000E9; Thu, 28 May 2026 20:29:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780000162; bh=uPCsTjpYo7jKb+NffYUyZegteReDiKpe2qVl9PI2lX8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Dc86kzx+fNx/phWqyikWwxPxr5HJ81T8ILCvCNv9hxs4AZ41/fblM8O4NzOXuA9pd Szc02Rtx6K83kLL5tpmEYshRIbBWrL5EszbwkXzpyYru/oJ3yz9DzxAwKPsHyySHIt Zne9s47oJVPH/sq3CyVrBWDWf8cDFRN9rIvysjww= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mitul Golani , Ankit Nautiyal , =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= , Tvrtko Ursulin , Sasha Levin Subject: [PATCH 6.18 325/377] drm/i915/dp: Fix readback for target_rr in Adaptive Sync SDP Date: Thu, 28 May 2026 21:49:23 +0200 Message-ID: <20260528194647.817068577@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260528194638.371537336@linuxfoundation.org> References: <20260528194638.371537336@linuxfoundation.org> User-Agent: quilt/0.69 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 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ankit Nautiyal [ Upstream commit f87abd0c6604fb6cc31cc86fc7ccc6a576924352 ] Correct the bit-shift logic to properly readback the 10 bit target_rr from DB3 and DB4. v2: Align the style with readback for vtotal. (Ville) Fixes: 12ea89291603 ("drm/i915/dp: Add Read/Write support for Adaptive Sync SDP") Cc: Mitul Golani Cc: Ankit Nautiyal Signed-off-by: Ankit Nautiyal Reviewed-by: Ville Syrjälä Link: https://patch.msgid.link/20260511123218.1589830-2-ankit.k.nautiyal@intel.com (cherry picked from commit f7abc4af2b19240a145a221461dfe756cc01d74a) Signed-off-by: Tvrtko Ursulin Signed-off-by: Sasha Levin --- drivers/gpu/drm/i915/display/intel_dp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 61f22275403bf..a44fbac1e5e27 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -4899,7 +4899,7 @@ int intel_dp_as_sdp_unpack(struct drm_dp_as_sdp *as_sdp, as_sdp->length = sdp->sdp_header.HB3 & DP_ADAPTIVE_SYNC_SDP_LENGTH; as_sdp->mode = sdp->db[0] & DP_ADAPTIVE_SYNC_SDP_OPERATION_MODE; as_sdp->vtotal = (sdp->db[2] << 8) | sdp->db[1]; - as_sdp->target_rr = (u64)sdp->db[3] | ((u64)sdp->db[4] & 0x3); + as_sdp->target_rr = ((sdp->db[4] & 0x3) << 8) | sdp->db[3]; as_sdp->target_rr_divider = sdp->db[4] & 0x20 ? true : false; return 0; -- 2.53.0