staging:iio:ad7887: Do not return error code in interrupt handler

The interrupt handler should only ever return one of the three irqreturn_t
constants and not an error code. Also make sure to always call
iio_trigger_notify_done before leaving the trigger handler.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/staging/iio/adc/ad7887_ring.c b/drivers/staging/iio/adc/ad7887_ring.c
index 1c406dad0e67871c77d27632e316ce99167b65ff..c76fdb5081c2c9fed713becd14530b4eff944b63 100644 (file)
--- a/drivers/staging/iio/adc/ad7887_ring.c
+++ b/drivers/staging/iio/adc/ad7887_ring.c
@@ -82,7 +82,7 @@ static irqreturn_t ad7887_trigger_handler(int irq, void *p)
 
        buf = kzalloc(indio_dev->scan_bytes, GFP_KERNEL);
        if (buf == NULL)
-               return -ENOMEM;
+               goto done;
 
        b_sent = spi_sync(st->spi, st->ring_msg);
        if (b_sent)