This is a note to let you know that I've just added the patch titled

iio:imu:adis16480: fix buffering for devices with no burst mode

to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From b0e85f95e30d4d2dc22ea123a30dba36406879a1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nuno=20S=C3=A1?= nuno.sa@analog.com Date: Fri, 14 Jan 2022 14:26:08 +0100 Subject: iio:imu:adis16480: fix buffering for devices with no burst mode MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

The trigger handler defined in the driver assumes that burst mode is being used. Hence, for devices that do not support it, we have to use the adis library default trigger implementation.

Tested-by: Julia Pineda julia.pineda@analog.com Fixes: 941f130881fa9 ("iio: adis16480: support burst read function") Signed-off-by: Nuno Sá nuno.sa@analog.com Link: https://lore.kernel.org/r/20220114132608.241-1-nuno.sa@analog.com Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com --- drivers/iio/imu/adis16480.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c index ed129321a14d..f9b4540db1f4 100644 --- a/drivers/iio/imu/adis16480.c +++ b/drivers/iio/imu/adis16480.c @@ -1403,6 +1403,7 @@ static int adis16480_probe(struct spi_device *spi) { const struct spi_device_id *id = spi_get_device_id(spi); const struct adis_data *adis16480_data; + irq_handler_t trigger_handler = NULL; struct iio_dev *indio_dev; struct adis16480 *st; int ret; @@ -1474,8 +1475,12 @@ static int adis16480_probe(struct spi_device *spi) st->clk_freq = st->chip_info->int_clk; }

+ /* Only use our trigger handler if burst mode is supported */ + if (adis16480_data->burst_len) + trigger_handler = adis16480_trigger_handler; + ret = devm_adis_setup_buffer_and_trigger(&st->adis, indio_dev, - adis16480_trigger_handler); + trigger_handler); if (ret) return ret;