regulator: consumer: Add missing stubs to regulator/consumer.h

stable inclusion
from stable-v5.10.116
commit a71658c7db0b2be9fcab3522aeabe11792a4f481
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I5L64K

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a71658c7db0b2be9fcab3522aeabe11792a4f481

--------------------------------

commit 51dfb6ca upstream.

Add missing stubs to regulator/consumer.h in order to fix COMPILE_TEST
of the kernel. In particular this should fix compile-testing of OPP core
because of a missing stub for regulator_sync_voltage().
Reported-by: Nkernel test robot <lkp@intel.com>
Signed-off-by: NDmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20210120205844.12658-1-digetx@gmail.comSigned-off-by: NMark Brown <broonie@kernel.org>
Cc: Bjørn Mork <bjorn@mork.no>
Cc: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NWei Li <liwei391@huawei.com>

include/linux/regulator/consumer.h

@@ -331,6 +331,12 @@ regulator_get_exclusive(struct device *dev, const char *id)
 	return ERR_PTR(-ENODEV);
 }
 
+static inline struct regulator *__must_check
+devm_regulator_get_exclusive(struct device *dev, const char *id)
+{
+	return ERR_PTR(-ENODEV);
+}
+
 static inline struct regulator *__must_check
 regulator_get_optional(struct device *dev, const char *id)
 {
@@ -486,6 +492,11 @@ static inline int regulator_get_voltage(struct regulator *regulator)
 	return -EINVAL;
 }
 
+static inline int regulator_sync_voltage(struct regulator *regulator)
+{
+	return -EINVAL;
+}
+
 static inline int regulator_is_supported_voltage(struct regulator *regulator,
 				   int min_uV, int max_uV)
 {
@@ -578,6 +589,25 @@ static inline int devm_regulator_unregister_notifier(struct regulator *regulator
 	return 0;
 }
 
+static inline int regulator_suspend_enable(struct regulator_dev *rdev,
+					   suspend_state_t state)
+{
+	return -EINVAL;
+}
+
+static inline int regulator_suspend_disable(struct regulator_dev *rdev,
+					    suspend_state_t state)
+{
+	return -EINVAL;
+}
+
+static inline int regulator_set_suspend_voltage(struct regulator *regulator,
+						int min_uV, int max_uV,
+						suspend_state_t state)
+{
+	return -EINVAL;
+}
+
 static inline void *regulator_get_drvdata(struct regulator *regulator)
 {
 	return NULL;