From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=205.220.168.131 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793006218; b=QXnWc5f0SyqoM9vb3Rzh3q/fcCj6pBaONS8BdxnlPvRc5U4ZV1AwJ0KivcG4GLZIDKRn c+rCptSistw+B4maFMPQmXmgisCbh7+/la4M18Cso68tv2zy6M+9u0YK6JOOVqap2bvC9 qDEMn6q8BL3mnfpn5VrEI77spUUBlRuWfj+N32Xb2r65N26bPGOa0tfgRlDTUXoJ704at SWeLqhnYjWZuKo0odNJNWKB+iL/Jv8SQipcaDKXmFFqK7T2VhZVgpv7624fAmxqb/kMiv vaaN/FPbFdK5nlPFoA2YV9DpXyKV3t2BJ7R+LPQJ9TKDG1OjwufMVVxwFSO3bJ9K2lQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793006218; h=DMARC-Filter:Received:DKIM-Signature:Received:Received: DKIM-Signature:X-Google-DKIM-Signature:X-Forwarded-Encrypted: X-Gm-Message-State:X-Gm-Gg:X-Received:X-Received:Received:Message-ID: Date:MIME-Version:User-Agent:Subject:To:Cc:References: Content-Language:From:In-Reply-To:Content-Type: Content-Transfer-Encoding:X-Proofpoint-GUID: X-Proofpoint-Spam-Details-Enc:X-Proofpoint-ORIG-GUID: X-Authority-Analysis:X-Proofpoint-Spam-Info: X-Proofpoint-Virus-Version:X-Proofpoint-Spam-Details; bh=S/R1V8jcwmGSYG2QsWGibA1eheKnvmEoWMpRIpkWm5Q=; b=ccupRFfLFDfHSeUKh6fL1BFe6IbnlsZIkXr4NIcO65644Y07k60hQY1M1zSZujCymB27 DhbniFA39BBuAbHbITRmtCjryPZUxf/Ektyh/QfW9BTztAys8/VOowcQvU+qUYOl+uFHG 3BVc5jhWJbACqDgh/I5Dlnf7x+jAA9C/EHY6ybRy22RYjDvG02otr85cCLMEmjf0LH1Vw FGkkGjgGKyi3HI6cQ6cI0yY1ge86FtvSGdsjMJ13RT6ZmzG3TdyRXi7G3dDC07U4wItkA 3NnBL0P8OWZ60rhxCN6ZNq9Buf8nv5JCg/QVXUb/Uf0dms0Xl5lDvASkE97e1ifB1LA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass header.d=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256 header.s=qcppdkim1 header.b=J5aIRmgb; dkim=pass header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.a=rsa-sha256 header.s=google header.b=kToPlAIx; arc=none smtp.remote-ip=205.220.168.131 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ECE9A606A31A for ; Mon, 26 Oct 2026 09:16:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org ECE9A606A31A Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256 header.s=qcppdkim1 header.b=J5aIRmgb; dkim=pass (2048-bit key, unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.a=rsa-sha256 header.s=google header.b=kToPlAIx Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 69Q8xZp41912229 for ; Mon, 26 Oct 2026 09:16:57 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= S/R1V8jcwmGSYG2QsWGibA1eheKnvmEoWMpRIpkWm5Q=; b=J5aIRmgb268pn19z DSO+mrBdgpsEyVvl6Rz7K/UO+z4ZD0c3wMI7EQE+cCpUAtNzXdmz2OKqMF54n9FI GmvDPOCtNZikgBawjr+e1vzEBxuWucEh6GGZPAPHgnAtfDe/Ek1Yodk0BPbi+Y+n UvD5JmMMgh5AcUY7Xs4fk7YqNaoLvUmXcVbkV4d3uEeEvU2C7zmNZmOgWB7StjAV Z03/v60mrkfZZ65MRj1MTJiWbUQ1eRKEBCk9r/eA2tKUVfPSGRPzSORodJY4eSPc BCv6WwYZZFDDGjthK+DoOeiTnm1T6dHDo9D7c95tf/efqHEBPWIOeAWROvTFrMTT /TkNeg== Received: from mail-qk1-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4hj3u60233-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 26 Oct 2026 09:16:57 +0000 (GMT) Received: by mail-qk1-f197.google.com with SMTP id af79cd13be357-93e629c7b16so35318185a.1 for ; Mon, 26 Oct 2026 02:16:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1793006216; x=1793611016; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=S/R1V8jcwmGSYG2QsWGibA1eheKnvmEoWMpRIpkWm5Q=; b=kToPlAIx/2Fd8+2Pyp+SLOXJEO14Iy1DwxWmGi4X4A3RcCXnAsJN0uoeVyQ+6U6O4T 1OLcFhWmkM9Ew5TpXrivuMFB9veeqjQxp18Di7+e9QYaTttkS2BdHyw+Gn4fD2hvFIO0 +EsVHtzQv/DO6TOL9z5JeDuwhEfn0yDdEelLKu7kZOZFtU9fLEiU4g+duGXYlC7v/NiJ WWyz8IgLsRu6lkVAcI4MJKwEooKIaaj7Cal3oikMdFRDj73Fv1GihNHRRnfn45zMr3Z/ UVojVpMnxikTyI3QqgVyaQRilrHCD7kfsrykXw8tJE9f3SyIlNgR6+yXT+tm1zQBnR9W 5z+w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1793006216; x=1793611016; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=S/R1V8jcwmGSYG2QsWGibA1eheKnvmEoWMpRIpkWm5Q=; b=yFw8Ck/0z9gYIqIidSxCsaS6ElECc+nFORfxp8P6V9NecGCfgDE9Nt1KetyxilvJ1q qlVSJjAImbbisQqHpxIHn602zPrOkXy51oGOwMwZ7v3+YMftkhnAEJhiWcgrq3MMV1db A3VKXutavnewtM0kDJ5ctXwjz1+4Bf2Qg385ap8riif5FEupnYJrjOnx8adNOgt+c9Mo i15KmjWJNVhlBs+aoaeJ3o951UCfJM0QvjnIQSH4VMDSARCKntku+LUnOLFlRtlH7DXU roMtpHkxiFGQCLkpypZLxFD/pDEwXijkvp/2shj371Mo5vx6ciQrMa+VzIfSMdWDWWw3 Datg== X-Forwarded-Encrypted: i=1; AKwUvByhWePKB97HIONw2WPXkpJwKjuAOTLunlyPnVir5IAwuujuxYCKzngBR62ZQwo8e3e2a/DWQKzubfDzddg=@vger.kernel.org X-Gm-Message-State: AFq9FYLTAooref9R+ZYn/WDKhhkzMMtXP4+liXZ7F68w6Y5B8k/5VubN eXOEG0Ow56339j29EvPKrzvzN7mez5oTMQHGI1e9935gYEnJ4lnbrhFC6dWMfmA9VwKdUlmwlbI 2LakXc28fe3jzhzdP7pIGquwTXpR1lAPmJemr5dtH9lc2T636Fe26bNxE6oqOpJjXKLw= X-Gm-Gg: AYBFou086+BN70jDJXP4YGoOYHbgB5554fhsikT8rAxzfrjYm3Q/odkfUwd7E+Pzx6I ZzdLnS12ZpDcooFyMiuYiC0Rj71bk1xp/Rdd6QYZEeJYn95EE0dvGbE1tiL+JIPXA+Q6qzdg3tG hiQ4Pu/9RAdecR0VITfL/F4WsK7nwFsQEjC72lXSksl9wRdxiA/ajXpUFEELj1wyeIQIiU9ER0B kH2Y+GnqsPzT4WRw7icXNCOsiyZtA0rX0LVZy2Gw3Z5ao51lkcxC6pIjuJ4lX7TGWlJ8inCRy9S AzYU2TPZSlcst/52OxF8sSmtiIz+/Ki9CzAaw8tpYYsgRXIe7KcUF5eV8Z77UC698cj5GGT9nrX 2CfPtXnJSNyjUzd4b9jl69g== X-Received: by 2002:a05:620a:6e9c:20b0:939:8148:1e3d with SMTP id af79cd13be357-940ef81147amr890801185a.2.1793006216187; Mon, 26 Oct 2026 02:16:56 -0700 (PDT) X-Received: by 2002:a05:620a:6e9c:20b0:939:8148:1e3d with SMTP id af79cd13be357-940ef81147amr890798685a.2.1793006215661; Mon, 26 Oct 2026 02:16:55 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6b44595e25fsm3373276a12.7.2026.10.26.02.16.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 26 Oct 2026 02:16:54 -0700 (PDT) Message-ID: Date: Mon, 26 Oct 2026 10:16:51 +0100 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 08/10] drm/msm/dpu: clear the DSC blocks left by a previous reservation To: Dmitry Baryshkov , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Antonino Maniscalco , Kalyan Thota , Federico Amedeo Izzo , Helen Koike , Vignesh Raman , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org References: <20261024-fd-kms-fix-smmu-v5-0-a5b0b284aead@oss.qualcomm.com> <20261024-fd-kms-fix-smmu-v5-8-a5b0b284aead@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261024-fd-kms-fix-smmu-v5-8-a5b0b284aead@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: CTdJxQdkAz8SN420VPBkyq8uaQCQfm_G X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDI2MDAzNiBTYWx0ZWRfX26x+Jtf5Deej UYr7pdm9o2Dz0LU0RlMdU1akmSCAvGD4TZ4N60zvf10ow5nY50MLF2mG2xLTjReFXVYvZEqoPv3 Vs7b2QgCPMfisM+tjJSGw4c4JCUC3NhkumpjQ+GUjz92G+df/uKJOayazaviKjgdz6yEhLtmjkO t+RNleRMfFgLnpoRPYaoldsVSTyISuTBYuF2cqNsRQphud6dTz6pDtguizBYgcsGksD7Wv1C8QY sxozAzpnRVkUimFVxEckOCQFu2tQbYwg5UgvzOmgw1H/W2qRnRwUzcLiy7zAvD1/2K1r8gfc5JH q3jTdDBYuekWUiqwPv3RNcIw6R67a6i/hLRu0JJ+2Oo79/p4qg4m6AFC/dsoys2mo3onmHPgWos SE1Yqa0O1Mjv1eLn4+aqwebnfftw4wcF8WnfSjZnTjOEgyBMZTD3m6BriColV0Srzc/Kb79NMdi kp8M5sqciwgM8VCMIBw== X-Proofpoint-ORIG-GUID: CTdJxQdkAz8SN420VPBkyq8uaQCQfm_G X-Authority-Analysis: v=2.4 cv=K823jCWI c=1 sm=1 tr=0 ts=6adf1a89 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=EUspDBNiAAAA:8 a=201-j9D5Wx46gDUpQiAA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDI2MDAzNiBTYWx0ZWRfX4vW7U/aYZcDt TrSIpddMOJgr+DglF+7vVakZe12vt4Ripwj3hhxpQ/Ajr6oIF3fPD+dcoZswbC1TKJQuPTUsnla pTvh2lMUM/ey3wb1ESAdyrP/itkwURQ= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-26_01,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 phishscore=0 spamscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 malwarescore=0 suspectscore=0 adultscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610260036 On 10/24/26 1:25 AM, Dmitry Baryshkov wrote: > dpu_encoder_virt_atomic_mode_set() fills dpu_enc->hw_dsc[] with the DSC > blocks of the new reservation, but only the first num_dsc entries. The > array is never cleared, so an encoder which once drove two DSC blocks > keeps pointing at the second one after it has been given a topology with > a single DSC. > > dpu_encoder_use_dsc_merge() counts the non-NULL entries of the whole > array and compares them against the number of interfaces, so the leftover > pointer makes it report DSC merge for a topology which has none, and > dpu_encoder_prep_dsc() then programs DSC_MODE_MULTIPLEX into the only DSC > block that is really used. > > Assign NULL when the new reservation has no block for the slot. > > Fixes: 58dca9810749 ("drm/msm/disp/dpu1: Add support for DSC in encoder") > Assisted-by: LLM > Signed-off-by: Dmitry Baryshkov > --- Reviewed-by: Konrad Dybcio Konrad