regulator: core: Make error messages more informative

The same error print exists 4 times in the regulator core

	<rdev>: operation not allowed

Unfortunately, seeing this in the dmesg is not very informative.
Add what type of operation is not allowed to the message so that
these errors are unique, hopefully pointing developers in the
right direction

	<rdev>: drms operation not allowed
	<rdev>: voltage operation not allowed
	<rdev>: current operation not allowed
	<rdev>: mode operation not allowed

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 7a85ac9e32c5da9168c1e79d3ae82d230d9dd628..065fe877dcf5d1e02fc1848ae162adfecbc85b04 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -180,7 +180,7 @@ static int regulator_check_voltage(struct regulator_dev *rdev,
                return -ENODEV;
        }
        if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_VOLTAGE)) {
-               rdev_err(rdev, "operation not allowed\n");
+               rdev_err(rdev, "voltage operation not allowed\n");
                return -EPERM;
        }
 
@@ -240,7 +240,7 @@ static int regulator_check_current_limit(struct regulator_dev *rdev,
                return -ENODEV;
        }
        if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_CURRENT)) {
-               rdev_err(rdev, "operation not allowed\n");
+               rdev_err(rdev, "current operation not allowed\n");
                return -EPERM;
        }
 
@@ -277,7 +277,7 @@ static int regulator_mode_constrain(struct regulator_dev *rdev, int *mode)
                return -ENODEV;
        }
        if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_MODE)) {
-               rdev_err(rdev, "operation not allowed\n");
+               rdev_err(rdev, "mode operation not allowed\n");
                return -EPERM;
        }
 
@@ -301,7 +301,7 @@ static int regulator_check_drms(struct regulator_dev *rdev)
                return -ENODEV;
        }
        if (!(rdev->constraints->valid_ops_mask & REGULATOR_CHANGE_DRMS)) {
-               rdev_dbg(rdev, "operation not allowed\n");
+               rdev_dbg(rdev, "drms operation not allowed\n");
                return -EPERM;
        }
        return 0;