Staging: iio: iio_dummy_evgen: Simplify NULL comparison

Author: Cristina Opriceana <cristina.opriceana@gmail.com>

Remove explicit NULL comparison and write it in its simpler form.
Replacement done with coccinelle:

@replace_rule@
expression e;
@@

-e == NULL
+ !e

Signed-off-by: Cristina Opriceana 
Signed-off-by: Greg Kroah-Hartman 
---
 drivers/staging/iio/iio_dummy_evgen.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
 
diff --git a/drivers/staging/iio/iio_dummy_evgen.c b/drivers/staging/iio/iio_dummy_evgen.c
index 59ad5a3..0c9c86d 100644
--- a/drivers/staging/iio/iio_dummy_evgen.c
+++ b/drivers/staging/iio/iio_dummy_evgen.c
@@ -72,7 +72,7 @@ static int iio_dummy_evgen_create(void)
 	int ret, i;
 
 	iio_evgen = kzalloc(sizeof(*iio_evgen), GFP_KERNEL);
-	if (iio_evgen == NULL)
+	if (!iio_evgen)
 		return -ENOMEM;
 
 	iio_evgen->base = irq_alloc_descs(-1, 0, IIO_EVENTGEN_NO, 0);
@@ -105,7 +105,7 @@ int iio_dummy_evgen_get_irq(void)
 {
 	int i, ret = 0;
 
-	if (iio_evgen == NULL)
+	if (!iio_evgen)
 		return -ENODEV;
 
 	mutex_lock(&iio_evgen->lock);