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[73.241.114.122]) by smtp.gmail.com with ESMTPSA id i10sm416268pfa.166.2020.04.20.14.34.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Apr 2020 14:34:08 -0700 (PDT) Date: Mon, 20 Apr 2020 14:34:06 -0700 From: Richard Cochran To: Arnd Bergmann Cc: Clay McClure , Grygorii Strashko , "David S. Miller" , Sekhar Nori , Networking , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] net: cpts: Condition WARN_ON on PTP_1588_CLOCK Message-ID: <20200420213406.GB20996@localhost> References: <20200416085627.1882-1-clay@daemons.net> <6fef3a00-6c18-b775-d1b4-dfd692261bd3@ti.com> <20200420093610.GA28162@arctic-shiba-lx> <20200420170051.GB11862@localhost> <20200420211819.GA16930@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Apr 20, 2020 at 11:21:20PM +0200, Arnd Bergmann wrote: > It's not great, but we have other interfaces like this that can return NULL for > success when the subsystem is disabled. The problem is when there is > a mismatch between the caller treating NULL as failure when it is meant to > be "successful lack of object returned". Yeah, that should be fixed. To be clear, do you all see a need to change the stubbed version of ptp_clock_register() or not? Thanks, Richard