linux-kernel - [RFT][PATCH 4/5] regulator: palmas: Fix palmas

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Date:	Wed, 18 Jul 2012 12:33:20 +0800
From:	Axel Lin <axel.lin@...il.com>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	linux-kernel@...r.kernel.org, Graeme Gregory <gg@...mlogic.co.uk>,
	Liam Girdwood <lrg@...com>
Subject: [RFT][PATCH 4/5] regulator: palmas: Fix palmas_probe error handling

Fix below error handling cases:

1. If reading PALMAS_SMPS_CTRL fails, simply returns ret rather than goto
   err_unregister_regulator because we have not call regulator_register().
2. If palmas_ldo_init() fails, we need to call regulator_unregister() for the
   regulator we just successfully registered in this for loop iteration.

Signed-off-by: Axel Lin <axel.lin@...il.com>
---
 drivers/regulator/palmas-regulator.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c
index de68347..46c7e88 100644
--- a/drivers/regulator/palmas-regulator.c
+++ b/drivers/regulator/palmas-regulator.c
@@ -633,7 +633,7 @@ static __devinit int palmas_probe(struct platform_device *pdev)
 
 	ret = palmas_smps_read(palmas, PALMAS_SMPS_CTRL, &reg);
 	if (ret)
-		goto err_unregister_regulator;
+		return ret;
 
 	if (reg & PALMAS_SMPS_CTRL_SMPS12_SMPS123_EN)
 		pmic->smps123 = 1;
@@ -783,8 +783,10 @@ static __devinit int palmas_probe(struct platform_device *pdev)
 			reg_init = pdata->reg_init[id];
 			if (reg_init) {
 				ret = palmas_ldo_init(palmas, id, reg_init);
-				if (ret)
+				if (ret) {
+					regulator_unregister(pmic->rdev[id]);
 					goto err_unregister_regulator;
+				}
 			}
 		}
 	}
-- 
1.7.9.5



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