ASoC: SOF: ipc4-pcm: Adjust pipeline_list->pipelines allocation type

In preparation for making the kmalloc family of allocators type aware,
we need to make sure that the returned type from the allocation matches
the type of the variable being assigned. (Before, the allocator would
always return "void *", which can be implicitly cast to any pointer type.)

The assigned type is "struct snd_sof_pipeline **", but the returned type
will be "struct snd_sof_widget **". These are the same size allocation
(pointer size) but the types don't match. Adjust the allocation type to
match the assignment.

Signed-off-by: Kees Cook <[email protected]>
Fixes: 9c04363 ("ASoC: SOF: Introduce struct snd_sof_pipeline")
Acked-by: Peter Ujfalusi <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: kees

sound/soc/sof/ipc4-pcm.c

@@ -784,7 +784,8 @@ static int sof_ipc4_pcm_setup(struct snd_sof_dev *sdev, struct snd_sof_pcm *spcm
 
 		/* allocate memory for max number of pipeline IDs */
 		pipeline_list->pipelines = kcalloc(ipc4_data->max_num_pipelines,
-						   sizeof(struct snd_sof_widget *), GFP_KERNEL);
+						   sizeof(*pipeline_list->pipelines),
+						   GFP_KERNEL);
 		if (!pipeline_list->pipelines) {
 			sof_ipc4_pcm_free(sdev, spcm);
 			return -ENOMEM;