6.15-stable review patch. If anyone has any objections, please let me know.
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From: Sean Nyekjaer sean@geanix.com
commit e2f820014239df9360064079ae93f838ff3b7f8c upstream.
From the documentation:
"offset to be added to <type>[Y]_raw prior toscaling by <type>[Y]_scale" Offset should be applied before multiplying scale, so divide offset by scale to make this correct.
Fixes: bc3eb0207fb5 ("iio: imu: inv_icm42600: add temperature sensor support") Signed-off-by: Sean Nyekjaer sean@geanix.com Acked-by: Jean-Baptiste Maneyrol jean-baptiste.maneyrol@tdk.com Link: https://patch.msgid.link/20250502-imu-v1-1-129b8391a4e3@geanix.com Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
--- a/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c @@ -67,16 +67,18 @@ int inv_icm42600_temp_read_raw(struct ii return IIO_VAL_INT; /* * T°C = (temp / 132.48) + 25 - * Tm°C = 1000 * ((temp * 100 / 13248) + 25) + * Tm°C = 1000 * ((temp / 132.48) + 25) + * Tm°C = 7.548309 * temp + 25000 + * Tm°C = (temp + 3312) * 7.548309 * scale: 100000 / 13248 ~= 7.548309 - * offset: 25000 + * offset: 3312 */ case IIO_CHAN_INFO_SCALE: *val = 7; *val2 = 548309; return IIO_VAL_INT_PLUS_MICRO; case IIO_CHAN_INFO_OFFSET: - *val = 25000; + *val = 3312; return IIO_VAL_INT; default: return -EINVAL;