media: media/test_drivers: Drop unnecessary NULL check after container_of

The result of container_of() operations is never NULL unless the embedded
element is the first element of the structure. This is not the case here.
The NULL check is therefore unnecessary and misleading. Remove it.

This change was made automatically with the following Coccinelle script.

@@
type t;
identifier v;
statement s;
@@

<+...
(
  t v = container_of(...);
|
  v = container_of(...);
)
  ...
  when != v
- if (\( !v \| v == NULL \) ) s
...+>

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/media/test-drivers/vim2m.c b/drivers/media/test-drivers/vim2m.c
index a24624353f9ed9d388dbcd291dce209f46d1fe0e..d714fe50afe5ca1a077d25c3886b281bd78720d4 100644 (file)
--- a/drivers/media/test-drivers/vim2m.c
+++ b/drivers/media/test-drivers/vim2m.c
@@ -624,11 +624,6 @@ static void device_work(struct work_struct *w)
 
        curr_ctx = container_of(w, struct vim2m_ctx, work_run.work);
 
-       if (!curr_ctx) {
-               pr_err("Instance released before the end of transaction\n");
-               return;
-       }
-
        vim2m_dev = curr_ctx->dev;
 
        src_vb = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);