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| author | Hartmut Knaack <knaack.h@gmx.de> | 2015-07-27 22:49:22 (GMT) |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-08-02 18:13:49 (GMT) |
| commit | b41e63cf83affa50a6141eba52be1fbd05f29b21 (patch) | |
| tree | 4078622e67dec25ee52218e8e29f282e4dc74d26 | |
| parent | 946448e08e2f693ff21418d92a598b7aa296816d (diff) | |
| download | linux-b41e63cf83affa50a6141eba52be1fbd05f29b21.tar.xz | |
iio:accel:stk8312: check for invalid value
Revision 1.2 of the datasheet recommends on page 22 to only write non-zero
values read from OTP register 0x70 into AFECTRL register.
Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Reviewed-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| -rw-r--r-- | drivers/iio/accel/stk8312.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/iio/accel/stk8312.c b/drivers/iio/accel/stk8312.c index a553736..8280a37 100644 --- a/drivers/iio/accel/stk8312.c +++ b/drivers/iio/accel/stk8312.c @@ -150,6 +150,8 @@ static int stk8312_otp_init(struct stk8312_data *data) goto exit_err; ret = i2c_smbus_read_byte_data(client, STK8312_REG_OTPDATA); + if (ret == 0) + ret = -EINVAL; if (ret < 0) goto exit_err; |