regulator: add regulator_can_change_voltage stub
When CONFIG_REGULATOR is not set, we cannot call
regulator_can_change_voltage() from a device driver, which results
in a build error like
video/fbdev/omap2/dss/hdmi5.c: In function 'hdmi_init_regulator':
video/fbdev/omap2/dss/hdmi5.c:149:2: error: implicit declaration of function 'regulator_can_change_voltage' [-Werror=implicit-function-declaration]
even for drivers that don't require the regulator API normally.
Such a use was recently added in the omap2+ hdmi driver.
This avoids the problem by adding a static inline function
stub in the API header, as we have for most of the other
regulator functions as well.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mark Brown <broonie@kernel.org>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h
index e530681..d60b92a 100644
--- a/include/linux/regulator/consumer.h
+++ b/include/linux/regulator/consumer.h
@@ -391,6 +391,11 @@
{
}
+static inline int regulator_can_change_voltage(struct regulator *regulator)
+{
+ return 0;
+}
+
static inline int regulator_set_voltage(struct regulator *regulator,
int min_uV, int max_uV)
{