[alsa-devel] [PATCHv2 2/3] i2c: Use stable dev_name for ACPI enumerated I2C slaves

Wolfram Sang wsa at the-dreams.de
Sat Nov 2 01:15:33 CET 2013

On Fri, Nov 01, 2013 at 02:35:55PM +0200, Jarkko Nikula wrote:
> Current I2C adapter id - client address "x-00yy" based device naming scheme
> is not always stable enough to be used in name based matching, for instance
> within ALSA SoC subsystem.
> This is problematic in PC kind of platforms where I2C adapter numbers can
> change due variable amount of bus controllers, probe order, add-on cards or
> just because of BIOS settings.
> This patch addresses the problem by using the ACPI device name with
> "i2c-" prefix for ACPI enumerated I2C slaves. For them device name
> "x-00yz" becomes "i2c-INTABCD:ij" after this patch.
> Signed-off-by: Jarkko Nikula <jarkko.nikula at linux.intel.com>

Acked-by: Wolfram Sang <wsa at the-dreams.de>

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