From mboxrd@z Thu Jan 1 00:00:00 1970 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 3E2933C5528 for ; Tue, 17 Mar 2026 12:37:11 +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=1773751034; cv=none; b=CsiYmPxcnHHcOvJISU0KTs/kbkEPmykRwTwd9KlgvFSwH2UveSkgXB5xM3U68B6gYKtwST5JgiwUhLRfDcHKIn6E5haEA9cfJanvjTdr/vv7Fko5cwOamM0R0FJCGR3ra8nQScu7q10ZqML3faCrhu2+g7RXB5LumB21tELh1Y8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773751034; c=relaxed/simple; bh=Jasx6mrT3KTPv64fBNBn5bwZKlN7tZTYnUZJNQj/84k=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=S5iubqhXs9qDgbNRpuK617x94gwk1J/JOVVAiaNi7WNJFLHpMpm4sEBv8p88/cDIRbs0TUAjFGfx/JnOMhi/RaJqpyVPuFYwASxB7RLcUgcPMlyqoQfkxjqMsrRKrnQIqcpnudY5iusmOdDqlwMDxwHgL6ijud8jrM1SAciLBB8= 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=IuFx0XbL; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=D0ljDlPe; 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="IuFx0XbL"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="D0ljDlPe" 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 62H7RID72906068 for ; Tue, 17 Mar 2026 12:37:10 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= BkZNNb+2TnjXOVXhkg3lk8FFLvFPiM6EXM36fB+6xUg=; b=IuFx0XbLIaafjgGC pw295rrrfdS5OH5aKEEU1VKL/w35VinC2WRVrpvmZqpYKkzn7xwyK1fhVjSsDxun y2I2o+lu5f4HvEOvv39j6gNQIlPsSxPJXL4mf3ig39aT+4wgoQFGO9WoeNFWaUWQ 5FlVbb200FPhbw0cpj65+nLUiUUyefCPd3iWjCsPTqLKM9LYqqRJEtj4KZplqoYO bXURt4K6NhU4S0NpdPws4NVcYD4B1djCNyMsuPn8fwe5kVoodLrMc4ZJkK0Vfpeu qLi8wNv9zJEbx6itURcJ3TlNlmULmgFVutiaQRrceBg0APr89tAtFc/BzttInLuv PrCd2w== Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4cy2jxh425-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Tue, 17 Mar 2026 12:37:10 +0000 (GMT) Received: by mail-qk1-f198.google.com with SMTP id af79cd13be357-8cd781c0d90so381516585a.1 for ; Tue, 17 Mar 2026 05:37:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1773751029; x=1774355829; 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=BkZNNb+2TnjXOVXhkg3lk8FFLvFPiM6EXM36fB+6xUg=; b=D0ljDlPemd8HqzUVVsVwQMq0Pd1BJvSJwvBWrvZg6o6k3S/3+6mkyKcx/oddq3ZVyx Yw9HVSIkNNkkH7HkGTq7TKu8u90miZD7BLWOqKK5T9iouhASq9gki6x8kQz6cwmt8EIE vI+eBO+OJXYnQj4ACaeSHLnkxeubHm1os9o9Wd3P/7JZaRZrCK84tWH1sT6vfPqgk5uW bmhpbIzyx3WZ/cYqpz6mHeqY8nHzLl+0uI0Z4GToTnJJeyeRw0uQAEMcebcL0LdqjwkE Q/rpPtU8+/DUrt+wUPgvcK4zCBJNZP9NrhZLnlLtlKr9msUsSJWeiwyqs3riR9LObq3j cjDg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773751029; x=1774355829; 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=BkZNNb+2TnjXOVXhkg3lk8FFLvFPiM6EXM36fB+6xUg=; b=fEHnYuh+14l+40Q4t/Psr5bjFZhLZefYfRuA++859/KEOFnM1zaUnHQFLyb5f9kFT7 o9+SOuZ6YhGS3iI8zzUxPtq3Y2fnFGrvJ/pkMRQXvaMAcYkVXtL4gXfkcOmrh7ffRVpS +KzhK9YlYiIUt85a6WMlXl360ta7IptFGh/z7SkXDVz7ovYCTaI/qcO9bP2ldB4m9SHO /ET1bxco/PIVO4IEWQK94/SHgzrmScYOcs9Jfa2pMqGMdd2l6xDBzvwULvJtPiE4BxU2 F2pcUTWiN9BJ8Y15C1VBx81yHsGA2M+Ofiff1e+bfAfvY1NCY77X/vbCoSXa+uhWtuv3 YFkg== X-Forwarded-Encrypted: i=1; AJvYcCV27hlbPPivHUKgM58+yp+OdaYL+LgEbuQR2x7MZnszdbozxFy2dRWfnn13nYceLFZk8yX2T6NplDxIUw==@vger.kernel.org X-Gm-Message-State: AOJu0YzHiK8DJ0EnqTER/uiizsHDNJezVjtg/xAIcsa5yqCBo6tPxAun TsyPTBhJCPNYPUB9+UhNTkNqWQVUhXRnAB12Qgj4pqPtq9gANvPu/DJkhqZMu2sng+Zrj6vvepA g1vJSgfxkqRHo9UnL8A7jbVNHyrtjwp+QfGuEEm4IABBRojGEUDPDQMlE+mG3/+Rg3w== X-Gm-Gg: ATEYQzxUJ52gh2rqqpV0VLQ0fReH8kC44hG3cT6inVfeViGPTAVUCb6QoNNjz9PzFm0 VbCa6ldHv3UyZuCSfS5Z/7dEQYwr4tHKM5W+hvHW+Rxbxr88xOP3QryXohJbqBo1c6GwgwxWB5g rmAQi5MjkbaLfpWfiqR94DSgh+0TBghbRMAYFA7k3g+mqkMFNCC1TIKfKAzTMD/+jgt/8FBo2hz s6xW6aL/ku7Xslm9lU1L3+yqRDHCkiaXnCjaaslLelBLHry5tqSaAKqk60h4H5iVeE/EdgCfF3S bEFqpR0A4HZwjPB3lk0edcXhav13yHjwV3hQySckM92y4xfQyNyXmOzr0KrCJhq7JMYImT11h0P 4RA5ULZtK4Pg8MOCHGp/1UUwTMHTKuy1xyRiSEc4KEnzh X-Received: by 2002:a05:620a:298d:b0:8cd:9020:f041 with SMTP id af79cd13be357-8cde1512e14mr361287385a.34.1773751029367; Tue, 17 Mar 2026 05:37:09 -0700 (PDT) X-Received: by 2002:a05:620a:298d:b0:8cd:9020:f041 with SMTP id af79cd13be357-8cde1512e14mr361282085a.34.1773751028718; Tue, 17 Mar 2026 05:37:08 -0700 (PDT) Received: from [127.0.1.1] ([178.197.219.94]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-439fe1abf84sm45556443f8f.14.2026.03.17.05.37.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Mar 2026 05:37:07 -0700 (PDT) From: Krzysztof Kozlowski Date: Tue, 17 Mar 2026 13:36:52 +0100 Subject: [PATCH v3 3/5] rpmsg: Constify buffer passed to send API Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260317-rpmsg-send-const-v3-3-4d7fd27f037f@oss.qualcomm.com> References: <20260317-rpmsg-send-const-v3-0-4d7fd27f037f@oss.qualcomm.com> In-Reply-To: <20260317-rpmsg-send-const-v3-0-4d7fd27f037f@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, Krzysztof Kozlowski X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=13629; i=krzysztof.kozlowski@oss.qualcomm.com; h=from:subject:message-id; bh=Jasx6mrT3KTPv64fBNBn5bwZKlN7tZTYnUZJNQj/84k=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBpuUrp/30qzgAy8cOZXGTXGuGGDebqtfbDv2CNx xX9zb1aj4yJAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCablK6QAKCRDBN2bmhouD 10ubD/9ja6JgtUxcfD1ZLzleawunPEH6dEaXI3hWiN+2fBnHnJOcaST7qigFlmUfyHaI514yuMy jyFJrTOcN8S13Xc5lvrsLmNLCMzmzHcaaqf6g8z0maBu8sW9N0nWjA/MLS21Hb6NOkBG3oNKfQB hVYxhOi8Eqq0nMKmXjeu+Znu21tBMOiPo3Ly1sCdPBe4XVnK4wuBXH6pRSNzz1QbeLiMDdpyMp3 qzO8dT3sNGYl8mEMs6XNAqHRnFNV6E4jxtvsEGZQZoUDNQX3Bai3PGyQsEeIens4c+eksrswKd4 h3r9IwuFEgBILpX4Zn4JzMMtCpMycD1axMoUEYqPQHbRaMWGuvqprzKtDwGABOBseOuQYQpHy12 AFav4g+BUL7bw+vJQxWm6s/+iYbwgFC0lHh55xt0VJ7FsEVTubwwSfnBMo/k0vPjYChFn2DbWhi Mz/s0xVcZ6v9pE7toSJ1ZwUAkH48HbgBcu55y9Q91rMV+52foklaxAm9agrj8UA+E6kzGdWH3vU WxVcwgClsuOdN9i6UIRf//FQQmQ9kMJ3SGvZPVSa0YaEcRSLwxYuS73Xooyt4Q8rT+dOw5nBcLq dvO6VSOSZV7u4BGOuVqmukefchOLTuxpqCOr9JpaPMwB/MRKmEmJ9kK2gQc+rkJsEBOMgG4i4vy es2RiiPMMveQq2g== X-Developer-Key: i=krzysztof.kozlowski@oss.qualcomm.com; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B X-Proofpoint-GUID: 4jSd2Q5ycQPr8gFCX4ns8Qr4GrArJ3-p X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzE3MDExMSBTYWx0ZWRfX/qvQOgkcni0V DFi4oLfzVE1jPaN37G/3AEE9qTi4jmxIrWnNt8gNJ+32MiglgpXZG/HuRkUNlLSgjhQKy5cBivS M1L1ONuAdEsasxe7QfHxTf80t5mvNcRckZYPAj7/kYgqWlofF1cSFGtvga/rSTvcc+Uoun/sWbJ ojgoeVT4pR0FInkfjb07Zes5EQKR+J0PmPZbAeidu196X8EcLoef1ZnSP0u4mkXdNXn5JwTJIXO aOQxdgeGhe0WTQzM3TXfN0d+SXgDXjcPmJwZXQyOTZqWSqZXcQ8F4NPM6rZLSy66vQpck2QZpzV Yb6u3NcWo6S3LfQOo4jUIhO8bYV/vyqgvW494Pg4why71OoWEh5FVr0JjpxevZqLiot8R4ZvcVe pWDj8kvk7oDoze9Eg2F+fbeZRdpkU1f1J8n4WY/bT4x+FQXGPXJveXjULobkuO+5ZWnLVJAVEuJ lb4506VNe30Smvz254g== X-Authority-Analysis: v=2.4 cv=c4imgB9l c=1 sm=1 tr=0 ts=69b94af6 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=gOEeR9iKwsj33Yj5oN/cWg==:17 a=IkcTkHD0fZMA:10 a=Yq5XynenixoA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=KKAkSRfTAAAA:8 a=QX4gbG5DAAAA:8 a=EUspDBNiAAAA:8 a=7kuhv_acGB6hOQYBqC0A:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 a=cvBusfyB2V15izCimMoJ:22 a=AbAUZ8qAyYyZVLSsDulk:22 X-Proofpoint-ORIG-GUID: 4jSd2Q5ycQPr8gFCX4ns8Qr4GrArJ3-p 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=2026-03-17_01,2026-03-17_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 malwarescore=0 impostorscore=0 phishscore=0 priorityscore=1501 bulkscore=0 spamscore=0 suspectscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2603170111 The rpmsg_send(), rpmsg_sendto() and other variants of sending interfaces should only send the passed data, without modifying its contents, so mark pointer 'data' as pointer to const. All users of this interface already follow this approach, so only the function declarations have to be updated. Acked-by: Mathieu Poirier Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Krzysztof Kozlowski --- Patch necessary for the further patches, please keep with the rest. --- drivers/rpmsg/mtk_rpmsg.c | 4 ++-- drivers/rpmsg/qcom_glink_native.c | 13 ++++++++----- drivers/rpmsg/qcom_smd.c | 10 ++++++---- drivers/rpmsg/rpmsg_core.c | 8 ++++---- drivers/rpmsg/rpmsg_internal.h | 8 ++++---- drivers/rpmsg/virtio_rpmsg_bus.c | 24 +++++++++++++----------- include/linux/rpmsg.h | 17 +++++++++-------- 7 files changed, 46 insertions(+), 38 deletions(-) diff --git a/drivers/rpmsg/mtk_rpmsg.c b/drivers/rpmsg/mtk_rpmsg.c index 0e03c5336609..1b670ed54cfa 100644 --- a/drivers/rpmsg/mtk_rpmsg.c +++ b/drivers/rpmsg/mtk_rpmsg.c @@ -135,7 +135,7 @@ static void mtk_rpmsg_destroy_ept(struct rpmsg_endpoint *ept) kref_put(&ept->refcount, __mtk_ept_release); } -static int mtk_rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len) +static int mtk_rpmsg_send(struct rpmsg_endpoint *ept, const void *data, int len) { struct mtk_rpmsg_rproc_subdev *mtk_subdev = to_mtk_rpmsg_endpoint(ept)->mtk_subdev; @@ -144,7 +144,7 @@ static int mtk_rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len) len, 0); } -static int mtk_rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len) +static int mtk_rpmsg_trysend(struct rpmsg_endpoint *ept, const void *data, int len) { struct mtk_rpmsg_rproc_subdev *mtk_subdev = to_mtk_rpmsg_endpoint(ept)->mtk_subdev; diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c index 9ef17c2e45b0..401a4ece0c97 100644 --- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -1474,7 +1474,7 @@ static int qcom_glink_request_intent(struct qcom_glink *glink, } static int __qcom_glink_send(struct glink_channel *channel, - void *data, int len, bool wait) + const void *data, int len, bool wait) { struct qcom_glink *glink = channel->glink; struct glink_core_rx_intent *intent = NULL; @@ -1553,28 +1553,31 @@ static int __qcom_glink_send(struct glink_channel *channel, return 0; } -static int qcom_glink_send(struct rpmsg_endpoint *ept, void *data, int len) +static int qcom_glink_send(struct rpmsg_endpoint *ept, const void *data, int len) { struct glink_channel *channel = to_glink_channel(ept); return __qcom_glink_send(channel, data, len, true); } -static int qcom_glink_trysend(struct rpmsg_endpoint *ept, void *data, int len) +static int qcom_glink_trysend(struct rpmsg_endpoint *ept, const void *data, + int len) { struct glink_channel *channel = to_glink_channel(ept); return __qcom_glink_send(channel, data, len, false); } -static int qcom_glink_sendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst) +static int qcom_glink_sendto(struct rpmsg_endpoint *ept, const void *data, + int len, u32 dst) { struct glink_channel *channel = to_glink_channel(ept); return __qcom_glink_send(channel, data, len, true); } -static int qcom_glink_trysendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst) +static int qcom_glink_trysendto(struct rpmsg_endpoint *ept, const void *data, + int len, u32 dst) { struct glink_channel *channel = to_glink_channel(ept); diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c index e1eb450f4fea..3ac863f400ec 100644 --- a/drivers/rpmsg/qcom_smd.c +++ b/drivers/rpmsg/qcom_smd.c @@ -960,28 +960,30 @@ static void qcom_smd_destroy_ept(struct rpmsg_endpoint *ept) kref_put(&ept->refcount, __ept_release); } -static int qcom_smd_send(struct rpmsg_endpoint *ept, void *data, int len) +static int qcom_smd_send(struct rpmsg_endpoint *ept, const void *data, int len) { struct qcom_smd_endpoint *qsept = to_smd_endpoint(ept); return __qcom_smd_send(qsept->qsch, data, len, true); } -static int qcom_smd_trysend(struct rpmsg_endpoint *ept, void *data, int len) +static int qcom_smd_trysend(struct rpmsg_endpoint *ept, const void *data, int len) { struct qcom_smd_endpoint *qsept = to_smd_endpoint(ept); return __qcom_smd_send(qsept->qsch, data, len, false); } -static int qcom_smd_sendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst) +static int qcom_smd_sendto(struct rpmsg_endpoint *ept, const void *data, int len, + u32 dst) { struct qcom_smd_endpoint *qsept = to_smd_endpoint(ept); return __qcom_smd_send(qsept->qsch, data, len, true); } -static int qcom_smd_trysendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst) +static int qcom_smd_trysendto(struct rpmsg_endpoint *ept, const void *data, + int len, u32 dst) { struct qcom_smd_endpoint *qsept = to_smd_endpoint(ept); diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c index 96964745065b..2f9444d1f194 100644 --- a/drivers/rpmsg/rpmsg_core.c +++ b/drivers/rpmsg/rpmsg_core.c @@ -153,7 +153,7 @@ EXPORT_SYMBOL(rpmsg_destroy_ept); * * Return: 0 on success and an appropriate error value on failure. */ -int rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len) +int rpmsg_send(struct rpmsg_endpoint *ept, const void *data, int len) { if (WARN_ON(!ept)) return -EINVAL; @@ -182,7 +182,7 @@ EXPORT_SYMBOL(rpmsg_send); * * Return: 0 on success and an appropriate error value on failure. */ -int rpmsg_sendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst) +int rpmsg_sendto(struct rpmsg_endpoint *ept, const void *data, int len, u32 dst) { if (WARN_ON(!ept)) return -EINVAL; @@ -210,7 +210,7 @@ EXPORT_SYMBOL(rpmsg_sendto); * * Return: 0 on success and an appropriate error value on failure. */ -int rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len) +int rpmsg_trysend(struct rpmsg_endpoint *ept, const void *data, int len) { if (WARN_ON(!ept)) return -EINVAL; @@ -238,7 +238,7 @@ EXPORT_SYMBOL(rpmsg_trysend); * * Return: 0 on success and an appropriate error value on failure. */ -int rpmsg_trysendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst) +int rpmsg_trysendto(struct rpmsg_endpoint *ept, const void *data, int len, u32 dst) { if (WARN_ON(!ept)) return -EINVAL; diff --git a/drivers/rpmsg/rpmsg_internal.h b/drivers/rpmsg/rpmsg_internal.h index 397e4926bd02..a8b7065fd165 100644 --- a/drivers/rpmsg/rpmsg_internal.h +++ b/drivers/rpmsg/rpmsg_internal.h @@ -63,11 +63,11 @@ struct rpmsg_device_ops { struct rpmsg_endpoint_ops { void (*destroy_ept)(struct rpmsg_endpoint *ept); - int (*send)(struct rpmsg_endpoint *ept, void *data, int len); - int (*sendto)(struct rpmsg_endpoint *ept, void *data, int len, u32 dst); + int (*send)(struct rpmsg_endpoint *ept, const void *data, int len); + int (*sendto)(struct rpmsg_endpoint *ept, const void *data, int len, u32 dst); - int (*trysend)(struct rpmsg_endpoint *ept, void *data, int len); - int (*trysendto)(struct rpmsg_endpoint *ept, void *data, int len, u32 dst); + int (*trysend)(struct rpmsg_endpoint *ept, const void *data, int len); + int (*trysendto)(struct rpmsg_endpoint *ept, const void *data, int len, u32 dst); __poll_t (*poll)(struct rpmsg_endpoint *ept, struct file *filp, poll_table *wait); int (*set_flow_control)(struct rpmsg_endpoint *ept, bool pause, u32 dst); diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c index 8d9e2b4dc7c1..5ae15111fb4f 100644 --- a/drivers/rpmsg/virtio_rpmsg_bus.c +++ b/drivers/rpmsg/virtio_rpmsg_bus.c @@ -136,11 +136,12 @@ struct virtio_rpmsg_channel { #define RPMSG_RESERVED_ADDRESSES (1024) static void virtio_rpmsg_destroy_ept(struct rpmsg_endpoint *ept); -static int virtio_rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len); -static int virtio_rpmsg_sendto(struct rpmsg_endpoint *ept, void *data, int len, - u32 dst); -static int virtio_rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len); -static int virtio_rpmsg_trysendto(struct rpmsg_endpoint *ept, void *data, +static int virtio_rpmsg_send(struct rpmsg_endpoint *ept, const void *data, int len); +static int virtio_rpmsg_sendto(struct rpmsg_endpoint *ept, const void *data, + int len, u32 dst); +static int virtio_rpmsg_trysend(struct rpmsg_endpoint *ept, const void *data, + int len); +static int virtio_rpmsg_trysendto(struct rpmsg_endpoint *ept, const void *data, int len, u32 dst); static __poll_t virtio_rpmsg_poll(struct rpmsg_endpoint *ept, struct file *filp, poll_table *wait); @@ -490,7 +491,7 @@ static void *get_a_tx_buf(struct virtproc_info *vrp) */ static int rpmsg_send_offchannel_raw(struct rpmsg_device *rpdev, u32 src, u32 dst, - void *data, int len, bool wait) + const void *data, int len, bool wait) { struct virtio_rpmsg_channel *vch = to_virtio_rpmsg_channel(rpdev); struct virtproc_info *vrp = vch->vrp; @@ -580,7 +581,7 @@ static int rpmsg_send_offchannel_raw(struct rpmsg_device *rpdev, return err; } -static int virtio_rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len) +static int virtio_rpmsg_send(struct rpmsg_endpoint *ept, const void *data, int len) { struct rpmsg_device *rpdev = ept->rpdev; u32 src = ept->addr, dst = rpdev->dst; @@ -588,8 +589,8 @@ static int virtio_rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len) return rpmsg_send_offchannel_raw(rpdev, src, dst, data, len, true); } -static int virtio_rpmsg_sendto(struct rpmsg_endpoint *ept, void *data, int len, - u32 dst) +static int virtio_rpmsg_sendto(struct rpmsg_endpoint *ept, const void *data, + int len, u32 dst) { struct rpmsg_device *rpdev = ept->rpdev; u32 src = ept->addr; @@ -597,7 +598,8 @@ static int virtio_rpmsg_sendto(struct rpmsg_endpoint *ept, void *data, int len, return rpmsg_send_offchannel_raw(rpdev, src, dst, data, len, true); } -static int virtio_rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len) +static int virtio_rpmsg_trysend(struct rpmsg_endpoint *ept, const void *data, + int len) { struct rpmsg_device *rpdev = ept->rpdev; u32 src = ept->addr, dst = rpdev->dst; @@ -605,7 +607,7 @@ static int virtio_rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len) return rpmsg_send_offchannel_raw(rpdev, src, dst, data, len, false); } -static int virtio_rpmsg_trysendto(struct rpmsg_endpoint *ept, void *data, +static int virtio_rpmsg_trysendto(struct rpmsg_endpoint *ept, const void *data, int len, u32 dst) { struct rpmsg_device *rpdev = ept->rpdev; diff --git a/include/linux/rpmsg.h b/include/linux/rpmsg.h index fb7ab9165645..83266ce14642 100644 --- a/include/linux/rpmsg.h +++ b/include/linux/rpmsg.h @@ -182,11 +182,11 @@ struct rpmsg_endpoint *rpmsg_create_ept(struct rpmsg_device *, rpmsg_rx_cb_t cb, void *priv, struct rpmsg_channel_info chinfo); -int rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len); -int rpmsg_sendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst); +int rpmsg_send(struct rpmsg_endpoint *ept, const void *data, int len); +int rpmsg_sendto(struct rpmsg_endpoint *ept, const void *data, int len, u32 dst); -int rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len); -int rpmsg_trysendto(struct rpmsg_endpoint *ept, void *data, int len, u32 dst); +int rpmsg_trysend(struct rpmsg_endpoint *ept, const void *data, int len); +int rpmsg_trysendto(struct rpmsg_endpoint *ept, const void *data, int len, u32 dst); __poll_t rpmsg_poll(struct rpmsg_endpoint *ept, struct file *filp, poll_table *wait); @@ -249,7 +249,7 @@ static inline struct rpmsg_endpoint *rpmsg_create_ept(struct rpmsg_device *rpdev return NULL; } -static inline int rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len) +static inline int rpmsg_send(struct rpmsg_endpoint *ept, const void *data, int len) { /* This shouldn't be possible */ WARN_ON(1); @@ -257,7 +257,7 @@ static inline int rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len) return -ENXIO; } -static inline int rpmsg_sendto(struct rpmsg_endpoint *ept, void *data, int len, +static inline int rpmsg_sendto(struct rpmsg_endpoint *ept, const void *data, int len, u32 dst) { /* This shouldn't be possible */ @@ -267,7 +267,8 @@ static inline int rpmsg_sendto(struct rpmsg_endpoint *ept, void *data, int len, } -static inline int rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len) +static inline int rpmsg_trysend(struct rpmsg_endpoint *ept, const void *data, + int len) { /* This shouldn't be possible */ WARN_ON(1); @@ -275,7 +276,7 @@ static inline int rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len) return -ENXIO; } -static inline int rpmsg_trysendto(struct rpmsg_endpoint *ept, void *data, +static inline int rpmsg_trysendto(struct rpmsg_endpoint *ept, const void *data, int len, u32 dst) { /* This shouldn't be possible */ -- 2.51.0