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[213.179.129.39]) by smtp.gmail.com with ESMTPSA id b8-20020adff248000000b003063772a55bsm4283305wrp.61.2023.06.21.04.53.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Jun 2023 04:53:25 -0700 (PDT) Date: Wed, 21 Jun 2023 13:53:24 +0200 From: Jiri Pirko To: Petr Oros Cc: Arkadiusz Kubalewski , kuba@kernel.org, vadfed@meta.com, jonathan.lemon@gmail.com, pabeni@redhat.com, corbet@lwn.net, davem@davemloft.net, edumazet@google.com, vadfed@fb.com, jesse.brandeburg@intel.com, anthony.l.nguyen@intel.com, saeedm@nvidia.com, leon@kernel.org, richardcochran@gmail.com, sj@kernel.org, javierm@redhat.com, ricardo.canuelo@collabora.com, mst@redhat.com, tzimmermann@suse.de, michal.michalik@intel.com, gregkh@linuxfoundation.org, jacek.lawrynowicz@linux.intel.com, airlied@redhat.com, ogabbay@kernel.org, arnd@arndb.de, nipun.gupta@amd.com, axboe@kernel.dk, linux@zary.sk, masahiroy@kernel.org, benjamin.tissoires@redhat.com, geert+renesas@glider.be, milena.olech@intel.com, kuniyu@amazon.com, liuhangbin@gmail.com, hkallweit1@gmail.com, andy.ren@getcruise.com, razor@blackwall.org, idosch@nvidia.com, lucien.xin@gmail.com, nicolas.dichtel@6wind.com, phil@nwl.cc, claudiajkang@gmail.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, intel-wired-lan@lists.osuosl.org, linux-rdma@vger.kernel.org, linux-arm-kernel@lists.infradead.org, mschmidt@redhat.com, linux-clk@vger.kernel.org, vadim.fedorenko@linux.dev Subject: Re: [RFC PATCH v8 04/10] dpll: netlink: Add DPLL framework base functions Message-ID: References: <20230609121853.3607724-1-arkadiusz.kubalewski@intel.com> <20230609121853.3607724-5-arkadiusz.kubalewski@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Wed, Jun 21, 2023 at 01:18:59PM CEST, poros@redhat.com wrote: >Arkadiusz Kubalewski píše v Pá 09. 06. 2023 v 14:18 +0200: >> From: Vadim Fedorenko [...] Could you perhaps cut out the text you don't comment? Saves some time finding your reply. >> +static int >> +dpll_set_from_nlattr(struct dpll_device *dpll, struct genl_info >> *info) >> +{ >> +       const struct dpll_device_ops *ops = dpll_device_ops(dpll); >> +       struct nlattr *tb[DPLL_A_MAX + 1]; >> +       int ret = 0; >> + >> +       nla_parse(tb, DPLL_A_MAX, genlmsg_data(info->genlhdr), >> +                 genlmsg_len(info->genlhdr), NULL, info->extack); >> +       if (tb[DPLL_A_MODE]) { >Hi, > >Here should be something like: > if (!ops->mode_set) > return -EOPNOTSUPP; Why? All drivers implement that. I believe that it's actullaly better that way. For a called setting up the same mode it is the dpll in, there should be 0 return by the driver. Note that driver holds this value. I'd like to keep this code as it is. [...]