iio: adis_buffer: do not return ints in irq handlers

On an IRQ handler we should not return normal error codes as 'irqreturn_t'
is expected.

Not necessarily stable material as the old check cannot fail, so it's a bug
we can not hit.

Fixes: ccd2b52f4ac69 ("staging:iio: Add common ADIS library")
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210422101911.135630-2-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c
index ac354321f63a39635391958b79c10df57a37b81b..175af154e4437a1b3338934dc112e8d3a4527306 100644 (file)
--- a/drivers/iio/imu/adis_buffer.c
+++ b/drivers/iio/imu/adis_buffer.c
@@ -129,9 +129,6 @@ static irqreturn_t adis_trigger_handler(int irq, void *p)
        struct adis *adis = iio_device_get_drvdata(indio_dev);
        int ret;
 
-       if (!adis->buffer)
-               return -ENOMEM;
-
        if (adis->data->has_paging) {
                mutex_lock(&adis->state_lock);
                if (adis->current_page != 0) {