[PATCH 4.4 53/92] regulator: tps65910: fix a missing check of return value

From: Greg Kroah-Hartman
Date: Wed Dec 04 2019 - 13:26:46 EST


From: Kangjie Lu <kjlu@xxxxxxx>

[ Upstream commit cd07e3701fa6a4c68f8493ee1d12caa18d46ec6a ]

tps65910_reg_set_bits() may fail. The fix checks if it fails, and if so,
returns with its error code.

Signed-off-by: Kangjie Lu <kjlu@xxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/regulator/tps65910-regulator.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/regulator/tps65910-regulator.c b/drivers/regulator/tps65910-regulator.c
index 696116ebdf50a..9cde7b0757011 100644
--- a/drivers/regulator/tps65910-regulator.c
+++ b/drivers/regulator/tps65910-regulator.c
@@ -1102,8 +1102,10 @@ static int tps65910_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, pmic);

/* Give control of all register to control port */
- tps65910_reg_set_bits(pmic->mfd, TPS65910_DEVCTRL,
+ err = tps65910_reg_set_bits(pmic->mfd, TPS65910_DEVCTRL,
DEVCTRL_SR_CTL_I2C_SEL_MASK);
+ if (err < 0)
+ return err;

switch (tps65910_chip_id(tps65910)) {
case TPS65910:
--
2.20.1