From 69d588392b057c0cedb1ba58d7973b77a65997ec Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Wed, 4 Jun 2014 14:53:25 -0500 Subject: [PATCH] regulator: core: print error value when constraints are not applied With commit 064d5cd110f94ce41ca5681dcda8b77fa63d5b95 (regulator: core: Fix the init of DT defined fixed regulators) We ensure that regulator must be capable of providing it's current voltage when constraints are used, however adding the return value in the print is a little more informative to explain the nature of the failure involved. So, instead of providing message such as: smps9: failed to get the current voltage having error value added to the message such as: smps9: failed to get the current voltage(-22) is a little more informative for debugging the error. Signed-off-by: Nishanth Menon Signed-off-by: Mark Brown --- drivers/regulator/core.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 4c1f999041dd..b4902ab64abe 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -846,7 +846,9 @@ static int machine_constraints_voltage(struct regulator_dev *rdev, rdev->constraints->min_uV == rdev->constraints->max_uV) { int current_uV = _regulator_get_voltage(rdev); if (current_uV < 0) { - rdev_err(rdev, "failed to get the current voltage\n"); + rdev_err(rdev, + "failed to get the current voltage(%d)\n", + current_uV); return current_uV; } if (current_uV < rdev->constraints->min_uV || @@ -856,8 +858,8 @@ static int machine_constraints_voltage(struct regulator_dev *rdev, rdev->constraints->max_uV); if (ret < 0) { rdev_err(rdev, - "failed to apply %duV constraint\n", - rdev->constraints->min_uV); + "failed to apply %duV constraint(%d)\n", + rdev->constraints->min_uV, ret); return ret; } } -- 2.20.1