mfd: AB3100 propagate error

This makes ab3100_set_register_interruptible() propagate the error
code from suboperations properly so it can be handles properly.
(A special case comes from signal interruption.)

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c
index ffe4b6415465..377ec2ba6549 100644
--- a/drivers/mfd/ab3100-core.c
+++ b/drivers/mfd/ab3100-core.c
@@ -107,7 +107,7 @@ int ab3100_set_register_interruptible(struct ab3100 *ab3100, u8 reg, u8 regval)
                 err = 0;
         }
         mutex_unlock(&ab3100->access_mutex);
-        return 0;
+        return err;
 }
 EXPORT_SYMBOL(ab3100_set_register_interruptible);