From nobody Thu Apr 9 08:01:46 2026 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 E5A2C3876AA for ; Tue, 10 Mar 2026 11:22:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773141771; cv=none; b=HmUnA6T67QO4SleS9u/0Wr/1uTaEEe8sz2isrpsrirMgaSfTA+NYmqyszTI1JTa7B4DzcfRDLR5bA2AWLqzMS3ZlWadFj3CzBxegW/+EINRv91z3NNBECmYUVHHq+p2GxvZucZYxkBdFQxrwrsFa1NuxRIHRLPx6o66I0GlykwM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773141771; c=relaxed/simple; bh=4kCGFUerd9XjwVun1nTUlYZGlcZap7SHC0pIvgPDfIc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=RDQ5q0e9sYUBDLiKSn+jG9wqrOou3wVJ1FJ6dv/GbWJ2BcUeHN6F5Hd/rXnQd/Cs8oJIkx3RlWsDx5uR2ITRd+VjT3Yglvsbh9Z9IUkf50Ee/fhnoahj0sSigOB9pbPCwiO3uleuJUh6v2ywhwZLNeYTHgSd65RQEQ0D0FFXW0c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=OXC5niV/; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=JwSLXJtD; arc=none smtp.client-ip=205.220.168.131 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) header.d=qualcomm.com header.i=@qualcomm.com header.b="OXC5niV/"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="JwSLXJtD" Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 62A92op12363996 for ; Tue, 10 Mar 2026 11:22:49 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= 20kNf6AjJi8G3MZa9GHdnqNbJyccoW/mMnIokY0W6ck=; b=OXC5niV/J3he/RXV HBpr+nDe8/aemQ6+BeRrlf6BTUhi4MbRlVL+gBPWo27/X9tFluI9FqmHL7mPKE4o QzY9Xkbb/ZZXBpBnn1bYiEvPn1v87+aiP0rNiRGYdB6MeAwYwa0i0BBG+FXky8E2 1XO6IYq9lwiKR4ucnNjiXu+/bnpBs7J9/BKn4s6v9B6ngMWo2xZD0FBjynyCChYi nGycch2+hmCt8a4PSTN4KrdJM5Cn3imNMfIgWfhPOvYvJM3ovG+Pa3YPu6BL+j90 vBr65LbveEQwJ1qEqtdXJTnaGL96ziMc1GFm7/CONJmAx1UxJ/k8VGQRNtTY+4QT JF09fw== 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 4ct032bygx-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Tue, 10 Mar 2026 11:22:49 +0000 (GMT) Received: by mail-qk1-f197.google.com with SMTP id af79cd13be357-8cb0595def4so832593185a.0 for ; Tue, 10 Mar 2026 04:22:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1773141768; x=1773746568; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=20kNf6AjJi8G3MZa9GHdnqNbJyccoW/mMnIokY0W6ck=; b=JwSLXJtD/zhzT7dBJn6DJ7xFlwhuXr15lE2YGDO4K0nD9qVf/QhWimCnphy8RZwILE vZm9N9FCOmJkHVPSp5YcZo8Nq8QTQYLBPQJEYJyn0BdN5YWMXbYNnh1ZRrb4IaT64u0M Jgdo4TCQoB/XzYm6KG0y2GEU0IpwlfRszzIGR9vO/WhaBYtcI9JGe6n37txb499bJ2B2 xRgv0apIn7d/QNM9CCCwzIR31hVYT9Ex4+Bg7954e21wIDROJeqNz5hf3gdmDk/6ACow gBpMZ5jLR5SPl3PMQbyMrn8NfqKMY4je0wLaVsDpDeBaE4XPY7aiu9NQfmnbr0/LDRUn j+Yw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1773141768; x=1773746568; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=20kNf6AjJi8G3MZa9GHdnqNbJyccoW/mMnIokY0W6ck=; b=UY6tUbDHClFFY2UeFz+E35ozA4c6lM3/+gq6WNYzaZ5Y1n4bgnwIDoNq93S1OPpdne MrZ+LS85ozgSGqP8/uWbMxc9Ohwuut3yScmbk5Qr+tyStY93YSJh8tB1+otontMdrssP j4aTelH5dHtcz6QvIc9sHLUEkwcyh/udG9C7Vg8KtM7MEyB7i9gId3LIbh0o6EDxEM7g zdkkicvCzAZS8goJn55VHl/7AP/e9/miQYoLS35MgQ1yqNN6pwmYdULsYmiHUR3z2bZo Hl9uGVWfNVG/31qfzmw7plgeCBEkaE/bt7HExSF846e+GqKZmADJenC2/vcbqIdjgu/g AxtA== X-Forwarded-Encrypted: i=1; AJvYcCXkMGSTYEYnqL/rZV0lq4H1LCAPuA4hF8BGO3lIcRmxGE1/Lbmm4PATZvvZgXbEKxWsjJJuwPTrXVvIZkw=@vger.kernel.org X-Gm-Message-State: AOJu0Ywb0nLt6hEWTfFgoyiEs+/8L2gJBJhB1kvPQZitvE40lj5+HNgz rx5aZeXEosDz2ZhHDJyBmGyqQNt2RTY3Xyo5M+OJuykgStTwzlO++8bInXdPHNt0f2mT6K3bpgJ 7IIu9NdOiLt6D8hPBOZ2zjapFPYcheDkCcT2odfeKEQ/h647/nGN4d4hqB3ZOh5v2Zgw= X-Gm-Gg: ATEYQzzCmeHejHjwgQhO2y2ne+xl1EN7+YlCI22dd9WcfN7/XYoAK/+qPJKeM5/Q7qg 8UJ5u7QhsTy9He1U7IVZPYnccWGrOK7p5V3UQoaopYkd76pr+N9/kfN58wcGLUTpEUcZfpU3WLn crWt+qY1zvvSudq3UByLEvAWjUqF1xywMkpg09YhBT9XXwT/SFnPoyNW/h/xgtvPnWeQlVMNlde gq7tB8Tm4zM+M2iYBJaXVxZ/NuOvY91+yzMHznPyaKn4lEBCtOmGZwmnMXui4UBbQfzqTvh/oDx KM2ROyCpis+pfl5uTsocaBh+jz98dIB/Bo8/q+4D3iO09yOVVIdqocbrLtFhpuL7OoLyhbknjtW H3zB2FSnDPOAXY/LrihvaIs8ojv/LE96A+xdm0tkY//rW X-Received: by 2002:a05:620a:6c0d:b0:8cb:4d46:7a6e with SMTP id af79cd13be357-8cd93b5aa5fmr298330985a.10.1773141768244; Tue, 10 Mar 2026 04:22:48 -0700 (PDT) X-Received: by 2002:a05:620a:6c0d:b0:8cb:4d46:7a6e with SMTP id af79cd13be357-8cd93b5aa5fmr298328485a.10.1773141767852; Tue, 10 Mar 2026 04:22:47 -0700 (PDT) Received: from [127.0.1.1] ([178.197.219.94]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48541b7f255sm67162115e9.12.2026.03.10.04.22.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Mar 2026 04:22:46 -0700 (PDT) From: Krzysztof Kozlowski Date: Tue, 10 Mar 2026 12:22:35 +0100 Subject: [PATCH v2 1/5] remoteproc: mtp_scp_ipi: Constify buffer passed to scp_ipi_send() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260310-rpmsg-send-const-v2-1-0e94c5db9bf4@oss.qualcomm.com> References: <20260310-rpmsg-send-const-v2-0-0e94c5db9bf4@oss.qualcomm.com> In-Reply-To: <20260310-rpmsg-send-const-v2-0-0e94c5db9bf4@oss.qualcomm.com> To: Bjorn Andersson , Mathieu Poirier , Matthias Brugger , AngeloGioacchino Del Regno , Srinivas Kandagatla , Konrad Dybcio , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Mauro Carvalho Chehab Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-sound@vger.kernel.org, linux-media@vger.kernel.org, Mathieu Poirier , Krzysztof Kozlowski X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1713; i=krzysztof.kozlowski@oss.qualcomm.com; h=from:subject:message-id; bh=4kCGFUerd9XjwVun1nTUlYZGlcZap7SHC0pIvgPDfIc=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBpr/7+Tx0V/XsD3XPBcWawLv/UH+qV9b41Eo9mZ PhOc+cPamCJAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCaa/+/gAKCRDBN2bmhouD 17siEACHdzjRE+5UXVUKCQjtmsjXeQ1XmAMVe185ibjnPxGTUlZVM7o6brVwHHjW5yQlxXVhnE9 OiEkttDjUGuvEOi3/umPRm/llumQaTLU7hYxz72No2AU0ED+Dra5FJ2C54Uk3BL7ADo9RaGezym Dat5knmeLz+H/9HwFjkHVHS1qJwa29wO/X3O3eMBRaagrF/UTZm9zyU8+LVQOWkYDg9wezZWy/y uCrOBXO9Bk03hDhoWqnXO8IxB5dmgazfpQjflf0TgE874HJG7CnqMcHC998DsEtytNTLjByOW2n zo/3UDqiGLTbo5tLK0NU+dbbaAc+yXcF6uQ4IVh/T9Ox+CugW1eLlJWSU0wiPBEOwuQSyt/J0yh XoFLHbdnwJ4ShgTKT8qKV0VRZAsifHzQTtHT0IJWEqaxarseoCA/JZjEjVewt0/oaIiMmwaBGev c6s+HtAvQafDzV9b/w215PsFPi+NLjNqWZiRxcFKJJg2SodeJBjdDTnjQvjC04VuRdu7t8q+go4 H2AdknxoAgj+yomEIbt25lm9IazxGEr33WRfKSjwR9gBiFUBBleKgpl4Fsuhf63WBAbgekWdtHm 7wPD5hlMrxKgl/MeBE4iz7oJigEgFmEmwEWEnQ/cNPE3iq3tuUX34v/RNn2diRcHHFolSvLtOib 9luiHafINMvBsOA== X-Developer-Key: i=krzysztof.kozlowski@oss.qualcomm.com; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzEwMDA5OCBTYWx0ZWRfXylWz92NP66bN 4wqMBMTYA+qDk2Hp4tGu36ofOkUUhPSBV1jz3NUrICLs5zWKR/jT2Rt5bkNJv+WhnwpOfUnrfQt cvXkjLFq1oy/k7uFvBw/F/8XJ5Qcc37bUd8nUOoPLOtgYlsSSewpleIYk5IE9wCHBHrKMbFtKcf X9wyHWTb8UszmhD+afNIK/0X5pc/Q1B9/QZ8B3RTjWgwS0kGvJHG6ZYdU/ts/CkdY9GctlavChP GJBwaBo606Q/CAErVeDeaBKT/N7bVi3GYh2mcs+bzhG0hQVSoIfJEAMT87uVdQsNh83n67Nb1pR x+KOce/FWVo3ZX/ZllHQkrtFZNFZxwgJJ5/u/yllMWkSH/AgRs0Q/ryVqc+1hlFsbDRAcGHeVKw pViPsuQwp/W8/aoAPWCTtB2GBzfNEVZazcfEb9WiP0vaEPS1hEyYZlpFAmQFlTEu/2ATBh/VRQj HT1ifuKcFeAn0/uDgPQ== X-Proofpoint-ORIG-GUID: xAtmb2Y2fc5nVpEphNPeFN24bmHBwVxb X-Proofpoint-GUID: xAtmb2Y2fc5nVpEphNPeFN24bmHBwVxb X-Authority-Analysis: v=2.4 cv=WtEm8Nfv c=1 sm=1 tr=0 ts=69afff09 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=gOEeR9iKwsj33Yj5oN/cWg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=KKAkSRfTAAAA:8 a=EUspDBNiAAAA:8 a=aY2cFw3b1D9xo--RORcA:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-03-10_02,2026-03-09_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 spamscore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 malwarescore=0 phishscore=0 adultscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2603100098 scp_ipi_send() should only send the passed buffer, without modifying its contents, so mark pointer 'buf' as pointer to const. Acked-by: Mathieu Poirier Signed-off-by: Krzysztof Kozlowski Reviewed-by: AngeloGioacchino Del Regno --- Patch necessary for the further patches, please keep with the rest. --- drivers/remoteproc/mtk_scp_ipi.c | 2 +- include/linux/remoteproc/mtk_scp.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/mtk_scp_ipi.c b/drivers/remoteproc/mtk_scp_= ipi.c index 7a37e273b3af..ee2f1121411f 100644 --- a/drivers/remoteproc/mtk_scp_ipi.c +++ b/drivers/remoteproc/mtk_scp_ipi.c @@ -156,7 +156,7 @@ EXPORT_SYMBOL_GPL(scp_ipi_unlock); * * Return: 0 if sending data successfully, -error on error. **/ -int scp_ipi_send(struct mtk_scp *scp, u32 id, void *buf, unsigned int len, +int scp_ipi_send(struct mtk_scp *scp, u32 id, const void *buf, unsigned in= t len, unsigned int wait) { struct mtk_share_obj __iomem *send_obj =3D scp->send_buf; diff --git a/include/linux/remoteproc/mtk_scp.h b/include/linux/remoteproc/= mtk_scp.h index 344ff41c22c7..4070537d6542 100644 --- a/include/linux/remoteproc/mtk_scp.h +++ b/include/linux/remoteproc/mtk_scp.h @@ -58,7 +58,7 @@ int scp_ipi_register(struct mtk_scp *scp, u32 id, scp_ipi= _handler_t handler, void *priv); void scp_ipi_unregister(struct mtk_scp *scp, u32 id); =20 -int scp_ipi_send(struct mtk_scp *scp, u32 id, void *buf, unsigned int len, +int scp_ipi_send(struct mtk_scp *scp, u32 id, const void *buf, unsigned in= t len, unsigned int wait); =20 unsigned int scp_get_vdec_hw_capa(struct mtk_scp *scp); --=20 2.51.0