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[68.147.8.254]) by smtp.gmail.com with ESMTPSA id j3sm554040pjw.23.2020.08.24.16.04.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Aug 2020 16:04:59 -0700 (PDT) Date: Mon, 24 Aug 2020 17:04:57 -0600 From: Mathieu Poirier To: Arnaud Pouliquen Cc: Bjorn Andersson , Ohad Ben-Cohen , linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com Subject: Re: [PATCH 9/9] rpmsg: ns: name service announcement endianness Message-ID: <20200824230457.GF3938186@xps15> References: <20200731114732.12815-1-arnaud.pouliquen@st.com> <20200731114732.12815-10-arnaud.pouliquen@st.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200731114732.12815-10-arnaud.pouliquen@st.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jul 31, 2020 at 01:47:32PM +0200, Arnaud Pouliquen wrote: > The endianness has to be fixed to ensure that both sides can > decode the message. The Little endian format is used according > to the generic virtio implementation. > > Signed-off-by: Arnaud Pouliquen > --- > drivers/rpmsg/rpmsg_ns.c | 17 +++++++++-------- > 1 file changed, 9 insertions(+), 8 deletions(-) > > diff --git a/drivers/rpmsg/rpmsg_ns.c b/drivers/rpmsg/rpmsg_ns.c > index cc2bd47c415a..b478e2b55213 100644 > --- a/drivers/rpmsg/rpmsg_ns.c > +++ b/drivers/rpmsg/rpmsg_ns.c > @@ -33,8 +33,8 @@ enum rpmsg_ns_flags { > */ > struct rpmsg_ns_msg { > char name[RPMSG_NAME_SIZE]; > - u32 addr; > - u32 flags; > + __le32 addr; > + __le32 flags; > } __packed; > > /** > @@ -57,8 +57,8 @@ static int rpmsg_ns_channel_announce(struct rpmsg_device *rpdev, int ns_flag) > return -EINVAL; > > strncpy(nsm.name, rpdev->id.name, RPMSG_NAME_SIZE); > - nsm.addr = rpdev->ept->addr; > - nsm.flags = ns_flag; > + nsm.addr = cpu_to_le32(rpdev->ept->addr); > + nsm.flags = cpu_to_le32(ns_flag); > > return rpmsg_send_offchannel(rpdev->ept, RPMSG_NS_ADDR, RPMSG_NS_ADDR, > &nsm, sizeof(nsm)); > @@ -84,6 +84,7 @@ static int rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len, > struct rpmsg_device *newch; > struct rpmsg_channel_info chinfo; > struct device *dev = &rpdev->dev; > + unsigned int flags = le32_to_cpu(msg->flags); > int ret; > > #if defined(CONFIG_DYNAMIC_DEBUG) > @@ -101,13 +102,13 @@ static int rpmsg_ns_cb(struct rpmsg_device *rpdev, void *data, int len, > > strncpy(chinfo.name, msg->name, sizeof(chinfo.name)); > chinfo.src = RPMSG_ADDR_ANY; > - chinfo.dst = msg->addr; > + chinfo.dst = le32_to_cpu(msg->addr); > > dev_info(dev, "%sing channel %s addr 0x%x\n", > - msg->flags & RPMSG_NS_DESTROY ? "destroy" : "creat", > - msg->name, msg->addr); > + flags & RPMSG_NS_DESTROY ? "destroy" : "creat", > + msg->name, chinfo.dst); > > - if (msg->flags & RPMSG_NS_DESTROY) { > + if (flags & RPMSG_NS_DESTROY) { > ret = rpmsg_release_channel(rpdev, &chinfo); > if (ret) > dev_err(dev, "rpmsg_destroy_channel failed: %d\n", ret); Please merge this patch to patch 5, I don't see a need for doing this separately. Thanks, Mathieu > -- > 2.17.1 >