diff options
author | Markus Pargmann <mpa@pengutronix.de> | 2014-10-08 15:47:05 +0200 |
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committer | Mark Brown <broonie@kernel.org> | 2014-10-20 12:23:45 +0100 |
commit | 76f439df50aba1838e06dd01e5f20dada7473f57 (patch) | |
tree | a35a98029f817fa4663b71dc62db7d4fe5ca1f4f /drivers/regulator/s2mps11.c | |
parent | f114040e3ea6e07372334ade75d1ee0775c355e1 (diff) |
regulator: Add ena_gpio_initialized to regulator_config
Most drivers do not set the ena_gpio field of struct regulator_config
before passing it to the regulator core. This is fine as long as the
gpio identifier that is passed is a positive integer. But the gpio
identifier 0 is also valid. So we are not able to decide wether we got a
real gpio identifier or not based on a 0 in ena_gpio.
To be able to decide if it is a valid gpio that got passed, this patch
adds a ena_gpio_initialized field that should be set if was initialized
with a correct value, either a gpio >= 0 or a negative error number. The
core then checks if ena_gpio or ena_gpio_initialized before handling it
as a gpio. This way we maintain backwards compatibility and fix the
behaviour for gpio number 0.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/s2mps11.c')
0 files changed, 0 insertions, 0 deletions