tree 1f81c7ffb20b23d5f7a157e996fbb176779af88a
parent bd69f73f2c81eed9a398708b8c4bb3409ba1b0f9
author Grant Likely <grant.likely@secretlab.ca> 1360691317 +0000
committer Grant Likely <grant.likely@secretlab.ca> 1360750313 +0000

gpio: Make of_count_named_gpios() use new of_count_phandle_with_args()

This patch replaces the horribly coded of_count_named_gpios() with a
call to of_count_phandle_with_args() which is far more efficient. This
also changes the return value of of_gpio_count() & of_gpio_named_count()
from 'unsigned int' to 'int' so that it can return an error code. All
the users of that function are fixed up to correctly handle a negative
return value.

v2: Split GPIO portion into a separate patch

Tested-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>