From nobody Tue Apr 7 01:02:00 2026 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 3B07E3C2793 for ; Tue, 17 Mar 2026 12:37:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773751036; cv=none; b=Q+IAgjVRbpqAupJyQ1hc0p5ZDfijKXGL8WBwl6OeRZe6x9D0Ldi/dpuDcW3/1AKFQW/9EMUnWQWt36rM9SMYNo7cq/V92mI4bEXixupthDbymC6AEvV4HCXEvYNO6N9MPGCxE15+iQj55VcLv3mLBfnKuD4+NdlH+rMSr4smChM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773751036; c=relaxed/simple; bh=Jasx6mrT3KTPv64fBNBn5bwZKlN7tZTYnUZJNQj/84k=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=IaMMwt8LW8M0N3aWwC4TeIlDXGHvHV47Vu6l3M43TT6H98iwHeJEa+UqCVOTehdLcAyueq2YCwBsdgy9Yh/8aS3WPu8nJxzm9LhlCEmhyMsURSOf+YYOunmwm8kzpBLfwuXbqOc2JMaB+PHK41MQG3iVJqwH2BjElJqVX3ES7wg= 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=Y3Ohf3sF; arc=none smtp.client-ip=205.220.180.131 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="Y3Ohf3sF" Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 62H7h1jM1533915 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-f197.google.com (mail-qk1-f197.google.com [209.85.222.197]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4cxm5k42er-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-f197.google.com with SMTP id af79cd13be357-8cd781c0d90so381517285a.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=1773751030; x=1774355830; 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=Y3Ohf3sFfo5vuP/g718whI80KF4L9H3pRBRKR4JRWebUCg/zPIoRNHvvxSTYkxtPzn FD/OnYy5F92xGlZQtC0VG6hJWvz7jlgd1+ufiHz/ateSKADONR3F3uoYizay7VU135Mp f6NBUMhk0HKCvW0RX/ApB5a7ccLv4lVx4BqNzyR62Un0RV8oL5IPS4LI6nSB7idfWn2d 6Wu4hR7fXrRkjl8NXMvfk0rZn+wZwobs8a9lieQ+yQ1vInkufIbdYFeRPQ09m7dcQg/W x/bN+Wz3JC9TGNmR7Hx618TMv6Zp6bdJaA9YuQP4WXWxqkAI9mnaY8nOfF4pBpqY3yK4 n8jg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773751030; x=1774355830; 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=YTg2plouEDzELgQwILOdJwtBzEH4L+CyXW+cu7q9lga1UGZQHlPdkEeHdv0xkuyE+j DlLNv1cF0u8rTYG+8XEMSbx1OHsqZ3GPtvJjReClO2TFiDO5qr1SE2xW4ql7QM/QNOVR +DdOx2VGA/4F7GOVwCzlsTQXMjQQ/KYh9szWnxhoskHeS1WmJDK7BZTssMVTGf3FQSO+ H0teNQyRfiT4mXL553pr7sKAKoi0GowfOqvfcb2z1zOUtLrrNcbnyRpHjEonhd4uIkdV vbQDsFFmjriyWw2yL1Yz/Rxm+UCpUB+hBRwfPXwgfWknqu3+OjL3ZQrgDSIMN7Z0jkce iG6w== X-Forwarded-Encrypted: i=1; AJvYcCVSw7wDfDN2hcFDeBG0CeL9GRFXasDHaxQtwJ76vpLAc2KEbs9ckC9LsDVzi0qry3s2hy31yxffVDEfkJo=@vger.kernel.org X-Gm-Message-State: AOJu0YzPlz9xmQ6A/FC5hgSUxvIdCC9lSpj7JFDnEKmd6aSh4ZnmLq+/ pc/MnBkd1NyaCXyfUP03aW8deYAykVYj4R/vzqSL6JsteF7puAJfY+SMfme4cR8v0kOsYhKb4OU 7dLWbEvQP2gxRyWPd1ZtcX/ZowqrWr+N8AuVZBqzCeH91fs00BmxcGgTayFQjb+2mmfw= X-Gm-Gg: ATEYQzwSYsOqDkOB9g1K+l02k8myYluLHDMlJgRMYNVuQnz89aiL/PJ2kawk46vPUfI vUvIOjf+l9wrvPpjIblFk1mRQR7c5mNM5tnsSk3kiG3IzD6smrc4fPf41CjUe9gKgF7Sv7mfeoD EYm8zhcRL/UFXe9ef7ebMLxRuRjHtVOBXSEryn4zuaUJuYFOt2VTCYjt3JOlhp/jBfMAINNjqHp fEnNWsMh1g33+odlWRSa/so2yb4qnR3MtE8n+GQmNIYvTS7pgEWwCZ8S+tA9dMyYC0Q5XddpXQG OeVyi+Vcts+L+fE1maQZLxYfl+Z9qKWjzkO+6sdkSmf6ARtTLia8OM2EWtjEnrYT0qnLRcnothT PN/FKeTf4DM7k4Sp+fc3N1gAPABC63GYSLmGCxWZjpmHP X-Received: by 2002:a05:620a:298d:b0:8cd:9020:f041 with SMTP id af79cd13be357-8cde1512e14mr361288385a.34.1773751029377; 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-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: <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-Authority-Analysis: v=2.4 cv=fJ00HJae c=1 sm=1 tr=0 ts=69b94af6 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=rJkE3RaqiGZ5pbrm-msn:22 a=KKAkSRfTAAAA:8 a=QX4gbG5DAAAA:8 a=EUspDBNiAAAA:8 a=7kuhv_acGB6hOQYBqC0A:9 a=QEXdDO2ut3YA:10 a=IoWCM6iH3mJn3m4BftBB:22 a=cvBusfyB2V15izCimMoJ:22 a=AbAUZ8qAyYyZVLSsDulk:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMzE3MDExMSBTYWx0ZWRfXxJiMVv2Gimnw BPokVaA31IAMNUxE6D03Y6pomWwmu2YHkyIWjymmKJ5yGCATR08B3ngZ0xA53YSxMy1aXbB17aG D6zGGbdTtn9E32qom6dQr9yj8fGk4u5nXeF9bmFJFbXYfBH76uho5M1CuYaFlx0T9xU5skoFSrh JWDA+5+MX7r/6j9FvS1R6Tw/9tURZ1mQEVA1LmbLvvkGe6KxY7SKAPp6Vm5ZKcmoPq9RXXQabAZ WvvUFQOdp2q9GMxorWIhKdpkQhRsMkDEV1VRdmob9sgEUpWwm23PR2CS6tniCpcRi657gcQSWAW qjPnx2s6llo+G8X2exbkivGEp7oQjpeUVaSDw1yIApQ85OdnbyDbTKD/cim0t0De6X43x7QvhiP k39UMVhGXtN9qC5kNFfpK8h3IBo+8PAE19n3WDxylEh6D1He3vptfw7kSKxfuRJloGARV7PW4E6 EpQ3303hlbix1I0rGQg== X-Proofpoint-GUID: 212TLOJrdNlBm_zsHPmoB0HnN9oFeZv7 X-Proofpoint-ORIG-GUID: 212TLOJrdNlBm_zsHPmoB0HnN9oFeZv7 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 spamscore=0 clxscore=1015 malwarescore=0 suspectscore=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 impostorscore=0 adultscore=0 bulkscore=0 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); } =20 -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, in= t len) { struct mtk_rpmsg_rproc_subdev *mtk_subdev =3D to_mtk_rpmsg_endpoint(ept)->mtk_subdev; @@ -144,7 +144,7 @@ static int mtk_rpmsg_send(struct rpmsg_endpoint *ept, v= oid *data, int len) len, 0); } =20 -static int mtk_rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int l= en) +static int mtk_rpmsg_trysend(struct rpmsg_endpoint *ept, const void *data,= int len) { struct mtk_rpmsg_rproc_subdev *mtk_subdev =3D to_mtk_rpmsg_endpoint(ept)->mtk_subdev; diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_n= ative.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_glin= k *glink, } =20 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 =3D channel->glink; struct glink_core_rx_intent *intent =3D NULL; @@ -1553,28 +1553,31 @@ static int __qcom_glink_send(struct glink_channel *= channel, return 0; } =20 -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, i= nt len) { struct glink_channel *channel =3D to_glink_channel(ept); =20 return __qcom_glink_send(channel, data, len, true); } =20 -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 =3D to_glink_channel(ept); =20 return __qcom_glink_send(channel, data, len, false); } =20 -static int qcom_glink_sendto(struct rpmsg_endpoint *ept, void *data, int l= en, u32 dst) +static int qcom_glink_sendto(struct rpmsg_endpoint *ept, const void *data, + int len, u32 dst) { struct glink_channel *channel =3D to_glink_channel(ept); =20 return __qcom_glink_send(channel, data, len, true); } =20 -static int qcom_glink_trysendto(struct rpmsg_endpoint *ept, void *data, in= t len, u32 dst) +static int qcom_glink_trysendto(struct rpmsg_endpoint *ept, const void *da= ta, + int len, u32 dst) { struct glink_channel *channel =3D to_glink_channel(ept); =20 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_endpoin= t *ept) kref_put(&ept->refcount, __ept_release); } =20 -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 =3D to_smd_endpoint(ept); =20 return __qcom_smd_send(qsept->qsch, data, len, true); } =20 -static int qcom_smd_trysend(struct rpmsg_endpoint *ept, void *data, int le= n) +static int qcom_smd_trysend(struct rpmsg_endpoint *ept, const void *data, = int len) { struct qcom_smd_endpoint *qsept =3D to_smd_endpoint(ept); =20 return __qcom_smd_send(qsept->qsch, data, len, false); } =20 -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, i= nt len, + u32 dst) { struct qcom_smd_endpoint *qsept =3D to_smd_endpoint(ept); =20 return __qcom_smd_send(qsept->qsch, data, len, true); } =20 -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 =3D to_smd_endpoint(ept); =20 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, u3= 2 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 d= st) +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); =20 - 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); =20 - 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, u= 32 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) =20 static void virtio_rpmsg_destroy_ept(struct rpmsg_endpoint *ept); -static int virtio_rpmsg_send(struct rpmsg_endpoint *ept, void *data, int l= en); -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, in= t 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 *dat= a, + int len, u32 dst); +static int virtio_rpmsg_trysend(struct rpmsg_endpoint *ept, const void *da= ta, + 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 =3D to_virtio_rpmsg_channel(rpdev); struct virtproc_info *vrp =3D vch->vrp; @@ -580,7 +581,7 @@ static int rpmsg_send_offchannel_raw(struct rpmsg_devic= e *rpdev, return err; } =20 -static int virtio_rpmsg_send(struct rpmsg_endpoint *ept, void *data, int l= en) +static int virtio_rpmsg_send(struct rpmsg_endpoint *ept, const void *data,= int len) { struct rpmsg_device *rpdev =3D ept->rpdev; u32 src =3D ept->addr, dst =3D 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); } =20 -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 *dat= a, + int len, u32 dst) { struct rpmsg_device *rpdev =3D ept->rpdev; u32 src =3D ept->addr; @@ -597,7 +598,8 @@ static int virtio_rpmsg_sendto(struct rpmsg_endpoint *e= pt, void *data, int len, return rpmsg_send_offchannel_raw(rpdev, src, dst, data, len, true); } =20 -static int virtio_rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, in= t len) +static int virtio_rpmsg_trysend(struct rpmsg_endpoint *ept, const void *da= ta, + int len) { struct rpmsg_device *rpdev =3D ept->rpdev; u32 src =3D ept->addr, dst =3D 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); } =20 -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 =3D 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); =20 -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, u3= 2 dst); =20 -int rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len); -int rpmsg_trysendto(struct rpmsg_endpoint *ept, void *data, int len, u32 d= st); +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); =20 __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(s= truct rpmsg_device *rpdev return NULL; } =20 -static inline int rpmsg_send(struct rpmsg_endpoint *ept, void *data, int l= en) +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; } =20 -static inline int rpmsg_sendto(struct rpmsg_endpoint *ept, void *data, int= len, +static inline int rpmsg_sendto(struct rpmsg_endpoint *ept, const void *dat= a, int len, u32 dst) { /* This shouldn't be possible */ @@ -267,7 +267,8 @@ static inline int rpmsg_sendto(struct rpmsg_endpoint *e= pt, void *data, int len, =20 } =20 -static inline int rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, in= t len) +static inline int rpmsg_trysend(struct rpmsg_endpoint *ept, const void *da= ta, + 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; } =20 -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 */ --=20 2.51.0