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Message-ID: <bc4f3314-46f2-72a8-f25c-c9774d987ca1@canonical.com>
Date:   Thu, 24 Feb 2022 08:47:22 +0100
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Subject: Re: [PATCH v2 01/11] driver: platform: add and use helper for safer
 setting of driver_override
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To:     Bjorn Helgaas <helgaas@kernel.org>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Stuart Yoder <stuyoder@gmail.com>,
        Laurentiu Tudor <laurentiu.tudor@nxp.com>,
        Abel Vesa <abel.vesa@nxp.com>, Shawn Guo <shawnguo@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Fabio Estevam <festevam@gmail.com>,
        "K. Y. Srinivasan" <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        Stephen Hemminger <sthemmin@microsoft.com>,
        Wei Liu <wei.liu@kernel.org>, Dexuan Cui <decui@microsoft.com>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Mathieu Poirier <mathieu.poirier@linaro.org>,
        Vineeth Vijayan <vneethv@linux.ibm.com>,
        Peter Oberparleiter <oberpar@linux.ibm.com>,
        Heiko Carstens <hca@linux.ibm.com>,
        Vasily Gorbik <gor@linux.ibm.com>,
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        Christian Borntraeger <borntraeger@linux.ibm.com>,
        Sven Schnelle <svens@linux.ibm.com>,
        Andy Gross <agross@kernel.org>,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
        Mark Brown <broonie@kernel.org>,
        "Michael S. Tsirkin" <mst@redhat.com>,
        Jason Wang <jasowang@redhat.com>, linux-kernel@vger.kernel.org,
        linux-clk@vger.kernel.org, NXP Linux Team <linux-imx@nxp.com>,
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        Linus Torvalds <torvalds@linux-foundation.org>,
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References: <20220223215342.GA155282@bhelgaas>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
In-Reply-To: <20220223215342.GA155282@bhelgaas>
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On 23/02/2022 22:53, Bjorn Helgaas wrote:
> On Wed, Feb 23, 2022 at 08:13:00PM +0100, Krzysztof Kozlowski wrote:
>> Several core drivers and buses expect that driver_override is a
>> dynamically allocated memory thus later they can kfree() it.
>> ...
> 
>> + * set_driver_override() - Helper to set or clear driver override.
> 
> Doesn't match actual function name.

Good point. I wonder why build W=1 did not complain... I need to check.

> 
>> + * @dev: Device to change
>> + * @override: Address of string to change (e.g. &device->driver_override);
>> + *            The contents will be freed and hold newly allocated override.
>> + * @s: NULL terminated string, new driver name to force a match, pass empty
>> + *     string to clear it
>> + *
>> + * Helper to setr or clear driver override in a device, intended for the cases
>> + * when the driver_override field is allocated by driver/bus code.
> 
> s/setr/set/

Right. Thanks for checking.

> 
>> + * Returns: 0 on success or a negative error code on failure.
>> + */
>> +int driver_set_override(struct device *dev, char **override, const char *s)
>> +{


Best regards,
Krzysztof