of: Create function for counting number of phandles in a property
authorGrant Likely <grant.likely@secretlab.ca>
Sun, 10 Feb 2013 22:57:21 +0000 (22:57 +0000)
committerGrant Likely <grant.likely@secretlab.ca>
Wed, 13 Feb 2013 10:09:31 +0000 (10:09 +0000)
commitbd69f73f2c81eed9a398708b8c4bb3409ba1b0f9
tree0be6f0ee561d13d01b6c44478b693cc60453ff6d
parent23ce04c0734e33b1042273b0ed11a8e4f7f988ca
of: Create function for counting number of phandles in a property

This patch creates of_count_phandle_with_args(), a new function for
counting the number of phandle+argument tuples in a given property. This
is better than the existing method of parsing each phandle individually
until parsing fails which is a horribly slow way to do the count.

Tested on ARM using the selftest code.

v3: - Rebased on top of selftest code cleanup patch
v2: - fix bug where of_parse_phandle_with_args() could behave like _count_.
    - made of_gpio_named_count() into a static inline regardless of CONFIG_OF_GPIO

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>
drivers/of/base.c
drivers/of/selftest.c
include/linux/of.h