regulator: lp8755: Fix lp8755_regulator_init unwind code

It's safe to pass NULL argument to regulator_unregister(), so we can remove
the NULL checking before calling regulator_unregister().
However pass a ERR_PTR to regulator_unregister() is wrong, so we need to
explicitly set "pchip->rdev[buck_num] = NULL" before goto err_buck.

This patch also includes below cleanups:
Show correct regulator id in dev_err.
Remove __devexit_p.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/regulator/lp8755.c b/drivers/regulator/lp8755.c
index dbc4d1254ca1..06a82e2cbf4b 100644
--- a/drivers/regulator/lp8755.c
+++ b/drivers/regulator/lp8755.c
@@ -358,7 +358,9 @@ static int lp8755_regulator_init(struct lp8755_chip *pchip)
                     regulator_register(&lp8755_regulators[buck_num], &rconfig);
                 if (IS_ERR(pchip->rdev[buck_num])) {
                         ret = PTR_ERR(pchip->rdev[buck_num]);
-                        dev_err(pchip->dev, "regulator init failed: buck 0\n");
+                        pchip->rdev[buck_num] = NULL;
+                        dev_err(pchip->dev, "regulator init failed: buck %d\n",
+                                buck_num);
                         goto err_buck;
                 }
         }
@@ -367,8 +369,7 @@ static int lp8755_regulator_init(struct lp8755_chip *pchip)
 
 err_buck:
         for (icnt = 0; icnt < LP8755_BUCK_MAX; icnt++)
-                if (pchip->rdev[icnt] != NULL)
-                        regulator_unregister(pchip->rdev[icnt]);
+                regulator_unregister(pchip->rdev[icnt]);
         return ret;
 }
 
@@ -557,7 +558,7 @@ static struct i2c_driver lp8755_i2c_driver = {
                    .name = LP8755_NAME,
                    },
         .probe = lp8755_probe,
-        .remove = __devexit_p(lp8755_remove),
+        .remove = lp8755_remove,
         .id_table = lp8755_id,
 };