[PATCH 5/7] iio: adis_buffer: check return value on page change

Nuno Sa
2021-04-13T11:19:09Z

On the trigger handler, we might need to change the device page. Hence,
we should check the return value from 'spi_write()' and act accordingly.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
---
drivers/iio/imu/adis_buffer.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c
index f89bce10090a..7ab15c08889f 100644
--- a/drivers/iio/imu/adis_buffer.c
+++ b/drivers/iio/imu/adis_buffer.c
@@ -137,7 +137,11 @@ static irqreturn_t adis_trigger_handler(int irq, void *p)
if (adis->current_page != 0) {
adis->tx[0] = ADIS_WRITE_REG(ADIS_REG_PAGE_ID);
adis->tx[1] = 0;
- spi_write(adis->spi, adis->tx, 2);
+ ret = spi_write(adis->spi, adis->tx, 2);
+ if (ret) {
+ dev_err(&adis->spi->dev, "Failed to change device page: %d\n", ret);
+ goto irq_done;
+ }
}
}

--
2.31.1