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, 07 Jun 2012 10:38:30 +0800 From: Axel Lin <axel.lin@...il.com> To: linux-kernel@...r.kernel.org Cc: Eric Miao <eric.y.miao@...il.com>, Mike Rapoport <mike@...pulab.co.il>, Liam Girdwood <lrg@...com>, Mark Brown <broonie@...nsource.wolfsonmicro.com> Subject: [PATCH RFC/RFT] regulator: da903x: Don't read/write to DA9030_INVAL/DA9034_INVAL address For fixed voltage, DA9030_LDO13 and DA9034_LDO5, the info->vol_reg is DA9030_INVAL/DA9034_INVAL. It does not make sense to read/write to DA9030_INVAL/DA9034_INVAL address. Signed-off-by: Axel Lin <axel.lin@...il.com> --- Because we use [list|map]_voltage_linear for fixed voltage where uV_step is 0, this patch also needs below patch: [PATCH RFC 1/2] regulator: core: Allow uV_step to be 0 for linear mapping if fixed voltage drivers/regulator/da903x.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/regulator/da903x.c b/drivers/regulator/da903x.c index 1005f5f..36c5b92 100644 --- a/drivers/regulator/da903x.c +++ b/drivers/regulator/da903x.c @@ -107,6 +107,9 @@ static int da903x_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) struct device *da9034_dev = to_da903x_dev(rdev); uint8_t val, mask; + if (rdev->desc->n_voltages == 1) + return -EINVAL; + val = selector << info->vol_shift; mask = ((1 << info->vol_nbits) - 1) << info->vol_shift; @@ -120,6 +123,9 @@ static int da903x_get_voltage_sel(struct regulator_dev *rdev) uint8_t val, mask; int ret; + if (rdev->desc->n_voltages == 1) + return 0; + ret = da903x_read(da9034_dev, info->vol_reg, &val); if (ret) return ret; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists