linux-kernel - Re: [PATCH 18/27] hwmon: (g762) Export OF module alias information

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Message-ID: <55BAC84A.1010007@roeck-us.net>
Date:	Thu, 30 Jul 2015 17:58:50 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Javier Martinez Canillas <javier@....samsung.com>,
	linux-kernel@...r.kernel.org
CC:	Jean Delvare <jdelvare@...e.com>, lm-sensors@...sensors.org
Subject: Re: [PATCH 18/27] hwmon: (g762) Export OF module alias information

On 07/30/2015 09:18 AM, Javier Martinez Canillas wrote:
> The I2C core always reports the MODALIAS uevent as "i2c:<client name"
> regardless if the driver was matched using the I2C id_table or the
> of_match_table. So technically there's no need for a driver to export
> the OF table since currently it's not used.
>
> In fact, the I2C device ID table is mandatory for I2C drivers since
> a i2c_device_id is passed to the driver's probe function even if the
> I2C core used the OF table to match the driver.
>
> And since the I2C core uses different tables, OF-only drivers needs to
> have duplicated data that has to be kept in sync and also the dev node
> compatible manufacturer prefix is stripped when reporting the MODALIAS.
>
> To avoid the above, the I2C core behavior may be changed in the future
> to not require an I2C device table for OF-only drivers and report the
> OF module alias. So, it's better to also export the OF table to prevent
> breaking module autoloading if that happens.
>
> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
>

Applied.

Thanks,
Guenter

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