Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:1 as permitted sender) client-ip=2620:137:e000::3:1;
Message-ID: <548849a8-9f11-5274-778e-f291267603bb@linaro.org>
Date:   Wed, 11 Oct 2023 09:27:20 +0100
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.15.1
Subject: Re: [PATCH v12 7/7] nvmem: core: Expose cells through sysfs
Content-Language: en-US
To:     Miquel Raynal <miquel.raynal@bootlin.com>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Michael Walle <michael@walle.cc>,
        =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= <rafal@milecki.pl>,
        Rob Herring <robh+dt@kernel.org>,
        Frank Rowand <frowand.list@gmail.com>,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        Robert Marko <robert.marko@sartura.hr>,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
        Luka Perkov <luka.perkov@sartura.hr>,
        Randy Dunlap <rdunlap@infradead.org>,
        Chen-Yu Tsai <wenst@chromium.org>,
        Daniel Golle <daniel@makrotopia.org>
References: <20231005155907.2701706-1-miquel.raynal@bootlin.com>
 <20231005155907.2701706-8-miquel.raynal@bootlin.com>
 <318fe799-f53e-64ed-b631-d099bb5202f4@linaro.org>
 <20231011091524.0c9ecc55@xps-13>
From:   Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
In-Reply-To: <20231011091524.0c9ecc55@xps-13>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Precedence: bulk


On 11/10/2023 08:15, Miquel Raynal wrote:
>>> +
>>> +	nvmem_cells_group.bin_attrs = cells_attrs;
>>> +
>>> +	ret = devm_device_add_groups(&nvmem->dev, nvmem_cells_groups);
>>> +	if (ret)
>>> +		goto unlock_mutex;
>> This is going to create groups after the nvmem device is added, isn't this going to be problem with user space notifications?
> Greg said it was not. I hope I understood correctly ????
> 
> And anyway, cells have never been available to userspace, so there is
> nothing userspace might expect yet?
I agree, but once we add sysfs uapi then this is going to change.

--srini


> 
> Thanks,
> Miquèl