[PATCH 4.9 014/104] power: supply: axp288_fuel_gauge: Fix fuel_gauge_reg_readb return on error

[Greg Kroah-Hartman]

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hans de Goede <hdego...@redhat.com>


[ Upstream commit 6f074bc878dc9b00c0df0bf3a8cb1d9e294cd881 ]

If reading the register fails, return the actual error code, instead
of the uninitialized val variable;

Signed-off-by: Hans de Goede <hdego...@redhat.com>
Signed-off-by: Sebastian Reichel <s...@kernel.org>
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/power/supply/axp288_fuel_gauge.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/power/supply/axp288_fuel_gauge.c
+++ b/drivers/power/supply/axp288_fuel_gauge.c
@@ -169,8 +169,10 @@ static int fuel_gauge_reg_readb(struct a
                        break;
        }
 
-       if (ret < 0)
+       if (ret < 0) {
                dev_err(&info->pdev->dev, "axp288 reg read err:%d\n", ret);
+               return ret;
+       }
 
        return val;
 }