Searched hist:"73 d42ed4" (Results 1 – 1 of 1) sorted by relevance
/openbmc/linux/drivers/iio/accel/ |
H A D | adxl367.c | 73d42ed4 Tue Feb 06 21:36:50 CST 2024 Cosmin Tanislav <demonsingur@gmail.com> iio: accel: adxl367: fix DEVID read after reset
commit 1b926914bbe4e30cb32f268893ef7d82a85275b8 upstream.
regmap_read_poll_timeout() will not sleep before reading, causing the first read to return -ENXIO on I2C, since the chip does not respond to it while it is being reset.
The datasheet specifies that a soft reset operation has a latency of 7.5ms.
Add a 15ms sleep between reset and reading the DEVID register, and switch to a simple regmap_read() call.
Fixes: cbab791c5e2a ("iio: accel: add ADXL367 driver") Signed-off-by: Cosmin Tanislav <demonsingur@gmail.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240207033657.206171-1-demonsingur@gmail.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 73d42ed4 Tue Feb 06 21:36:50 CST 2024 Cosmin Tanislav <demonsingur@gmail.com> iio: accel: adxl367: fix DEVID read after reset
commit 1b926914bbe4e30cb32f268893ef7d82a85275b8 upstream.
regmap_read_poll_timeout() will not sleep before reading, causing the first read to return -ENXIO on I2C, since the chip does not respond to it while it is being reset.
The datasheet specifies that a soft reset operation has a latency of 7.5ms.
Add a 15ms sleep between reset and reading the DEVID register, and switch to a simple regmap_read() call.
Fixes: cbab791c5e2a ("iio: accel: add ADXL367 driver") Signed-off-by: Cosmin Tanislav <demonsingur@gmail.com> Reviewed-by: Nuno Sa <nuno.sa@analog.com> Link: https://lore.kernel.org/r/20240207033657.206171-1-demonsingur@gmail.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|