tree a0968bc07accce62249a61820ab12b9dff302dbc
parent 45c42a7f582cc07259bc78910de8b0b1c94094d5
author Jarkko Nikula <jarkko.nikula@linux.intel.com> 1384430632 +0200
committer Rafael J. Wysocki <rafael.j.wysocki@intel.com> 1384467645 +0100

i2c: Use stable dev_name for ACPI enumerated I2C slaves

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@linux.intel.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>