lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 18 Feb 2016 09:35:07 +0900 From: Krzysztof Kozlowski <k.kozlowski@...sung.com> To: Sangbeom Kim <sbkim73@...sung.com>, Krzysztof Kozlowski <k.kozlowski@...sung.com>, Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org Cc: jacob.e.keller@...el.com, Arnd Bergmann <arnd@...db.de> Subject: [PATCH v2] regulator: s2mps11: Simplify expression used in BUILD_BUG_ON 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 <arnd@...db.de> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.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
Powered by blists - more mailing lists