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Sat, 30 May 2020 22:56:38 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 04UMr5er060838; Sat, 30 May 2020 22:56:37 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by userp3030.oracle.com with ESMTP id 31bckr8f4r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 30 May 2020 22:56:37 +0000 Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 04UMuXtw014919; Sat, 30 May 2020 22:56:33 GMT Received: from [10.39.241.21] (/10.39.241.21) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sat, 30 May 2020 15:56:32 -0700 Subject: Re: [PATCH 02/12] xenbus: add freeze/thaw/restore callbacks support To: Anchal Agarwal , tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, x86@kernel.org, jgross@suse.com, linux-pm@vger.kernel.org, linux-mm@kvack.org, kamatam@amazon.com, sstabellini@kernel.org, konrad.wilk@oracle.com, roger.pau@citrix.com, axboe@kernel.dk, davem@davemloft.net, rjw@rjwysocki.net, len.brown@intel.com, pavel@ucw.cz, peterz@infradead.org, eduval@amazon.com, sblbir@amazon.com, xen-devel@lists.xenproject.org, vkuznets@redhat.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, dwmw@amazon.co.uk, benh@kernel.crashing.org References: <7fd12227f923eacc5841b47bd69f72b4105843a7.1589926004.git.anchalag@amazon.com> From: Boris Ostrovsky Autocrypt: addr=boris.ostrovsky@oracle.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <7fd12227f923eacc5841b47bd69f72b4105843a7.1589926004.git.anchalag@amazon.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9637 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 malwarescore=0 adultscore=0 suspectscore=0 mlxscore=0 spamscore=0 mlxlogscore=999 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005300178 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9637 signatures=668686 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 suspectscore=0 mlxlogscore=999 priorityscore=1501 bulkscore=0 phishscore=0 clxscore=1015 impostorscore=0 adultscore=0 spamscore=0 mlxscore=0 lowpriorityscore=0 cotscore=-2147483648 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005300178 X-Rspamd-Queue-Id: D261880127D8 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 5/19/20 7:25 PM, Anchal Agarwal wrote: > =20 > int xenbus_dev_resume(struct device *dev) > { > - int err; > + int err =3D 0; That's not necessary. > struct xenbus_driver *drv; > struct xenbus_device *xdev > =3D container_of(dev, struct xenbus_device, dev); > - > + bool xen_suspend =3D xen_suspend_mode_is_xen_suspend(); > DPRINTK("%s", xdev->nodename); > =20 > if (dev->driver =3D=3D NULL) > @@ -627,24 +645,32 @@ int xenbus_dev_resume(struct device *dev) > drv =3D to_xenbus_driver(dev->driver); > err =3D talk_to_otherend(xdev); > if (err) { > - pr_warn("resume (talk_to_otherend) %s failed: %i\n", > + pr_warn("%s (talk_to_otherend) %s failed: %i\n", Please use dev_warn() everywhere, we just had a bunch of patches that replaced pr_warn(). In fact,=C2=A0 this is one of the lines that got chan= ged. > =20 > int xenbus_dev_cancel(struct device *dev) > { > - /* Do nothing */ > - DPRINTK("cancel"); > + int err =3D 0; Again, no need to initialize. > + struct xenbus_driver *drv; > + struct xenbus_device *xdev > + =3D container_of(dev, struct xenbus_device, dev); xendev please to be consistent with other code. And use to_xenbus_device(= ). -boris