Following BUILD_BUG_ON using a variable fails for some of the compilers
and optimization levels (reported for gcc 4.9):
var = ARRAY_SIZE(s2mps15_regulators);
BUILD_BUG_ON(S2MPS_REGULATOR_MAX < var);
Fix this by using ARRAY_SIZE directly.
Additionally add missing BUILD_BUG_ON check for S2MPS15 device (the
check ensures that internal arrays are big enough to hold data for all
of regulators on all devices).
Reported-by: Arnd Bergmann <a...@arndb.de>
Signed-off-by: Krzysztof Kozlowski <k.kozlow...@samsung.com>
---
Changes since v1:
1. Rewritten description after comments from Jacob.
See results when UBSAN is enabled:
http://arm-soc.lixom.net/buildlogs/arm-soc/v4.5-rc4-39-g0d7baf0/buildall.arm.exynos_defconfig.log.failed
---
drivers/regulator/s2mps11.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
index 3242ffc0cb25..df553fb40d82 100644
--- a/drivers/regulator/s2mps11.c
+++ b/drivers/regulator/s2mps11.c
@@ -1090,26 +1090,27 @@ static int s2mps11_pmic_probe(struct platform_device
*pdev)
case S2MPS11X:
s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
regulators = s2mps11_regulators;
- BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
+ BUILD_BUG_ON(S2MPS_REGULATOR_MAX <
ARRAY_SIZE(s2mps11_regulators));
break;
case S2MPS13X:
s2mps11->rdev_num = ARRAY_SIZE(s2mps13_regulators);
regulators = s2mps13_regulators;
- BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
+ BUILD_BUG_ON(S2MPS_REGULATOR_MAX <
ARRAY_SIZE(s2mps13_regulators));
break;
case S2MPS14X:
s2mps11->rdev_num = ARRAY_SIZE(s2mps14_regulators);
regulators = s2mps14_regulators;
- BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
+ BUILD_BUG_ON(S2MPS_REGULATOR_MAX <
ARRAY_SIZE(s2mps14_regulators));
break;
case S2MPS15X:
s2mps11->rdev_num = ARRAY_SIZE(s2mps15_regulators);
regulators = s2mps15_regulators;
+ BUILD_BUG_ON(S2MPS_REGULATOR_MAX <
ARRAY_SIZE(s2mps15_regulators));
break;
case S2MPU02:
s2mps11->rdev_num = ARRAY_SIZE(s2mpu02_regulators);
regulators = s2mpu02_regulators;
- BUILD_BUG_ON(S2MPS_REGULATOR_MAX < s2mps11->rdev_num);
+ BUILD_BUG_ON(S2MPS_REGULATOR_MAX <
ARRAY_SIZE(s2mpu02_regulators));
break;
default:
dev_err(&pdev->dev, "Invalid device type: %u\n",
--
2.5.0
