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Wed, 07 May 2025 23:40:28 -0700 (PDT) Date: Thu, 8 May 2025 09:40:26 +0300 From: Dan Carpenter To: Bjorn Andersson , Naresh Kamboju Cc: Mathieu Poirier , linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Greg Kroah-Hartman , stable@vger.kernel.org, patches@lists.linux.dev, torvalds@linux-foundation.org, akpm@linux-foundation.org, linux@roeck-us.net, shuah@kernel.org, patches@kernelci.org, lkft-triage@lists.linaro.org, pavel@denx.de, jonathanh@nvidia.com, f.fainelli@gmail.com, sudipm.mukherjee@gmail.com, srw@sladewatkins.net, rwarsow@gmx.de, conor@kernel.org, hargar@microsoft.com, broonie@kernel.org, Arnd Bergmann , Liam Girdwood , Frieder Schrempf , Marek Vasut , Anders Roxell Subject: Re: [PATCH] rpmsg: qcom_smd: Fix uninitialized return variable in __qcom_smd_send() Message-ID: References: Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Hi Greg, I'm sorry I forgot to add the: Cc: stable@vger.kernel.org to this patch. Could we backport it to stable, please? regards, dan carpenter On Wed, Apr 23, 2025 at 08:22:05PM +0300, Dan Carpenter wrote: > The "ret" variable isn't initialized if we don't enter the loop. For > example, if "channel->state" is not SMD_CHANNEL_OPENED. > > Fixes: 33e3820dda88 ("rpmsg: smd: Use spinlock in tx path") > Signed-off-by: Dan Carpenter > --- > Naresh, could you test this patch and see if it fixes the boot > problems you saw? > > drivers/rpmsg/qcom_smd.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c > index 40d386809d6b..bb161def3175 100644 > --- a/drivers/rpmsg/qcom_smd.c > +++ b/drivers/rpmsg/qcom_smd.c > @@ -746,7 +746,7 @@ static int __qcom_smd_send(struct qcom_smd_channel *channel, const void *data, > __le32 hdr[5] = { cpu_to_le32(len), }; > int tlen = sizeof(hdr) + len; > unsigned long flags; > - int ret; > + int ret = 0; > > /* Word aligned channels only accept word size aligned data */ > if (channel->info_word && len % 4) > -- > 2.47.2