spi: Use stable dev_name for ACPI enumerated SPI slaves

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Current spi bus_num.chip_select "spix.y" based device naming scheme may not
be stable enough to be used in name based matching, for instance within
ALSA SoC subsystem.

This can be problem in PC kind of platforms if there are changes in SPI bus
configuration, amount of busses or probe order.

This patch addresses the problem by using the ACPI device name with
"spi-" prefix for ACPI enumerated SPI slave. For them device name
"spix.y" becomes "spi-INTABCD:ij".

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Acked-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

...

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Jarkko Nikula 2013-11-14 14:03:53 +02:00 • committed by Rafael J. Wysocki

parent 70762abb9f

commit e13ac47bec

1 changed files with 14 additions and 3 deletions

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drivers/spi/spi.c

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