media: vim2m: Drop unneeded v4l2_m2m_get_vq() NULL check

The v4l2_m2m_get_vq() function never returns NULL.

In the set format handler, the check may have been intended to catch
invalid format types, but that's not needed as the V4L2 core picks the
appropriate VIDIOC_S_FMT ioctl handler based on the format type, so the
type can't be incorrect.

In the get format handler, the return value is not used for any purpose
other than the NULL check, which was therefore probably intended to
catch invalid format types. That's not needed for the same reason as in
the set format handler.

Drop the unneeded return value checks and, as the function has no side
effect, the unneeded function call as well.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

diff --git a/drivers/media/test-drivers/vim2m.c b/drivers/media/test-drivers/vim2m.c
index 86c32699111adc838d4304ec0c0f0026db128d70..9d921feaf8249e73c7e8008c116b2cd8a87d7efd 100644 (file)
--- a/drivers/media/test-drivers/vim2m.c
+++ b/drivers/media/test-drivers/vim2m.c
@@ -724,14 +724,9 @@ static int vidioc_enum_framesizes(struct file *file, void *priv,
 
 static int vidioc_g_fmt(struct vim2m_ctx *ctx, struct v4l2_format *f)
 {
-       struct vb2_queue *vq;
        struct vim2m_q_data *q_data;
        int ret;
 
-       vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
-       if (!vq)
-               return -EINVAL;
-
        q_data = get_q_data(ctx, f->type);
        if (!q_data)
                return -EINVAL;
@@ -752,14 +747,9 @@ static int vidioc_g_fmt(struct vim2m_ctx *ctx, struct v4l2_format *f)
 
 static int vidioc_g_fmt_mplane(struct vim2m_ctx *ctx, struct v4l2_format *f)
 {
-       struct vb2_queue *vq;
        struct vim2m_q_data *q_data;
        int ret;
 
-       vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
-       if (!vq)
-               return -EINVAL;
-
        q_data = get_q_data(ctx, f->type);
        if (!q_data)
                return -EINVAL;
@@ -971,8 +961,6 @@ static int vidioc_s_fmt(struct vim2m_ctx *ctx, struct v4l2_format *f)
        u32 height = (is_mplane) ? f->fmt.pix_mp.height : f->fmt.pix.height;
 
        vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
-       if (!vq)
-               return -EINVAL;
 
        q_data = get_q_data(ctx, f->type);
        if (!q_data)