[PATCH 3/3] [media] fsl-viu: Adjust six checks for null pointers

[SF Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Fri, 8 Sep 2017 21:16:50 +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 <elfr...@users.sourceforge.net>
---
 drivers/media/platform/fsl-viu.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/media/platform/fsl-viu.c b/drivers/media/platform/fsl-viu.c
index 1fe2a295db93..a133dfdd869a 100644
--- a/drivers/media/platform/fsl-viu.c
+++ b/drivers/media/platform/fsl-viu.c
@@ -313,7 +313,7 @@ static int restart_video_queue(struct viu_dmaqueue *vidq)
                if (list_empty(&vidq->queued))
                        return 0;
                buf = list_entry(vidq->queued.next, struct viu_buf, vb.queue);
-               if (prev == NULL) {
+               if (!prev) {
                        list_move_tail(&buf->vb.queue, &vidq->active);
 
                        dprintk(1, "Restarting video dma\n");
@@ -450,7 +450,7 @@ static int buffer_prepare(struct videobuf_queue *vq,
        struct viu_buf *buf = container_of(vb, struct viu_buf, vb);
        int rc;
 
-       BUG_ON(fh->fmt == NULL);
+       BUG_ON(!fh->fmt);
 
        if (fh->width  < 48 || fh->width  > norm_maxw() ||
            fh->height < 32 || fh->height > norm_maxh())
@@ -668,9 +668,9 @@ static int verify_preview(struct viu_dev *dev, struct 
v4l2_window *win)
        enum v4l2_field field;
        int maxw, maxh;
 
-       if (dev->ovbuf.base == NULL)
+       if (!dev->ovbuf.base)
                return -EINVAL;
-       if (dev->ovfmt == NULL)
+       if (!dev->ovfmt)
                return -EINVAL;
        if (win->w.width < 48 || win->w.height < 32)
                return -EINVAL;
@@ -825,7 +825,7 @@ int vidioc_s_fbuf(struct file *file, void *priv, const 
struct v4l2_framebuffer *
 
        /* check args */
        fmt = format_by_fourcc(fb->fmt.pixelformat);
-       if (fmt == NULL)
+       if (!fmt)
                return -EINVAL;
 
        /* ok, accept it */
@@ -1472,7 +1472,7 @@ static int viu_of_probe(struct platform_device *op)
 
        /* Allocate memory for video device */
        vdev = video_device_alloc();
-       if (vdev == NULL) {
+       if (!vdev) {
                ret = -ENOMEM;
                goto err_vdev;
        }
-- 
2.14.1