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Subject[PATCH 6/6] [media] atmel-isi: Adjust a null pointer check in three functions
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From: Markus Elfring <elfring@users.sourceforge.net>
Date: Mon, 4 Sep 2017 21:30:48 +0200
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The script “checkpatch.pl” pointed information out like the following.

Comparison to NULL could be written !…

Thus fix the affected source code places.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/media/platform/atmel/atmel-isi.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/atmel/atmel-isi.c b/drivers/media/platform/atmel/atmel-isi.c
index ac40defce1e7..f2e13dfb19a1 100644
--- a/drivers/media/platform/atmel/atmel-isi.c
+++ b/drivers/media/platform/atmel/atmel-isi.c
@@ -411,7 +411,7 @@ static void buffer_queue(struct vb2_buffer *vb)
spin_lock_irqsave(&isi->irqlock, flags);
list_add_tail(&buf->list, &isi->video_buffer_list);

- if (isi->active == NULL) {
+ if (!isi->active) {
isi->active = buf;
if (vb2_is_streaming(vb->vb2_queue))
start_dma(isi, buf);
@@ -1141,7 +1141,7 @@ static int isi_graph_init(struct atmel_isi *isi)

/* Register the subdevices notifier. */
subdevs = devm_kzalloc(isi->dev, sizeof(*subdevs), GFP_KERNEL);
- if (subdevs == NULL) {
+ if (!subdevs) {
of_node_put(isi->entity.node);
return -ENOMEM;
}
@@ -1200,7 +1200,7 @@ static int atmel_isi_probe(struct platform_device *pdev)
return ret;

isi->vdev = video_device_alloc();
- if (isi->vdev == NULL) {
+ if (!isi->vdev) {
ret = -ENOMEM;
goto err_vdev_alloc;
}
--
2.14.1
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