staging:iio:dummy driver: 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/iio_simple_dummy_buffer.c b/drivers/staging/iio/iio_simple_dummy_buffer.c
index b9e6093..c0951f9 100644 (file)
--- a/drivers/staging/iio/iio_simple_dummy_buffer.c
+++ b/drivers/staging/iio/iio_simple_dummy_buffer.c
@@ -52,7 +52,7 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p)
 
        data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
        if (data == NULL)
-               return -ENOMEM;
+               goto done;
 
        if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)) {
                /*
@@ -91,6 +91,7 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p)
 
        kfree(data);
 
+done:
        /*
         * Tell the core we are done with this trigger and ready for the
         * next one.