staging:iio:accel:adis16xxx: Do not return error code in the 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/accel/adis16201_ring.c b/drivers/staging/iio/accel/adis16201_ring.c
index 247602a..03fcf6e 100644 (file)
--- a/drivers/staging/iio/accel/adis16201_ring.c
+++ b/drivers/staging/iio/accel/adis16201_ring.c
@@ -70,7 +70,7 @@ static irqreturn_t adis16201_trigger_handler(int irq, void *p)
        data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
        if (data == NULL) {
                dev_err(&st->us->dev, "memory alloc failed in ring bh");
-               return -ENOMEM;
+               goto done;
        }
 
        if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)
@@ -85,8 +85,9 @@ static irqreturn_t adis16201_trigger_handler(int irq, void *p)
 
        ring->access->store_to(ring, (u8 *)data, pf->timestamp);
 
-       iio_trigger_notify_done(indio_dev->trig);
        kfree(data);
+done:
+       iio_trigger_notify_done(indio_dev->trig);
 
        return IRQ_HANDLED;
 }

diff --git a/drivers/staging/iio/accel/adis16203_ring.c b/drivers/staging/iio/accel/adis16203_ring.c
index 7bbd2c2..c16b2b7 100644 (file)
--- a/drivers/staging/iio/accel/adis16203_ring.c
+++ b/drivers/staging/iio/accel/adis16203_ring.c
@@ -69,7 +69,7 @@ static irqreturn_t adis16203_trigger_handler(int irq, void *p)
        data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
        if (data == NULL) {
                dev_err(&st->us->dev, "memory alloc failed in ring bh");
-               return -ENOMEM;
+               goto done;
        }
 
        if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength) &&
@@ -86,8 +86,9 @@ static irqreturn_t adis16203_trigger_handler(int irq, void *p)
                              (u8 *)data,
                              pf->timestamp);
 
-       iio_trigger_notify_done(indio_dev->trig);
        kfree(data);
+done:
+       iio_trigger_notify_done(indio_dev->trig);
 
        return IRQ_HANDLED;
 }

diff --git a/drivers/staging/iio/accel/adis16204_ring.c b/drivers/staging/iio/accel/adis16204_ring.c
index f73518b..1d2b31c 100644 (file)
--- a/drivers/staging/iio/accel/adis16204_ring.c
+++ b/drivers/staging/iio/accel/adis16204_ring.c
@@ -66,7 +66,7 @@ static irqreturn_t adis16204_trigger_handler(int irq, void *p)
        data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
        if (data == NULL) {
                dev_err(&st->us->dev, "memory alloc failed in ring bh");
-               return -ENOMEM;
+               goto done;
        }
 
        if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength) &&
@@ -81,8 +81,9 @@ static irqreturn_t adis16204_trigger_handler(int irq, void *p)
 
        ring->access->store_to(ring, (u8 *)data, pf->timestamp);
 
-       iio_trigger_notify_done(indio_dev->trig);
        kfree(data);
+done:
+       iio_trigger_notify_done(indio_dev->trig);
 
        return IRQ_HANDLED;
 }

diff --git a/drivers/staging/iio/accel/adis16209_ring.c b/drivers/staging/iio/accel/adis16209_ring.c
index 0906075..1a4a55c 100644 (file)
--- a/drivers/staging/iio/accel/adis16209_ring.c
+++ b/drivers/staging/iio/accel/adis16209_ring.c
@@ -66,7 +66,7 @@ static irqreturn_t adis16209_trigger_handler(int irq, void *p)
        data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
        if (data == NULL) {
                dev_err(&st->us->dev, "memory alloc failed in ring bh");
-               return -ENOMEM;
+               goto done;
        }
 
        if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength) &&
@@ -81,8 +81,9 @@ static irqreturn_t adis16209_trigger_handler(int irq, void *p)
 
        ring->access->store_to(ring, (u8 *)data, pf->timestamp);
 
-       iio_trigger_notify_done(indio_dev->trig);
        kfree(data);
+done:
+       iio_trigger_notify_done(indio_dev->trig);
 
        return IRQ_HANDLED;
 }

diff --git a/drivers/staging/iio/accel/adis16240_ring.c b/drivers/staging/iio/accel/adis16240_ring.c
index 86a2a47..360dfed 100644 (file)
--- a/drivers/staging/iio/accel/adis16240_ring.c
+++ b/drivers/staging/iio/accel/adis16240_ring.c
@@ -64,7 +64,7 @@ static irqreturn_t adis16240_trigger_handler(int irq, void *p)
        data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
        if (data == NULL) {
                dev_err(&st->us->dev, "memory alloc failed in ring bh");
-               return -ENOMEM;
+               goto done;
        }
 
        if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength) &&
@@ -79,8 +79,9 @@ static irqreturn_t adis16240_trigger_handler(int irq, void *p)
 
        ring->access->store_to(ring, (u8 *)data, pf->timestamp);
 
-       iio_trigger_notify_done(indio_dev->trig);
        kfree(data);
+done:
+       iio_trigger_notify_done(indio_dev->trig);
 
        return IRQ_HANDLED;
 }