// SPDX-License-Identifier: GPL-2.0-only/* * generic arrays */ #include <linux/slab.h>#include <sound/core.h>#include <sound/hdaudio.h> /** * snd_array_new - get a new element from the given array * @array: the array object * * Get a new element from the given array.  If it exceeds the * pre-allocated array size, re-allocate the array. * * Returns NULL if allocation failed. */void *snd_array_new(struct snd_array *array){	if (snd_BUG_ON(!array->elem_size))		return NULL;	if (array->used >= array->alloced) {		int num = array->alloced + array->alloc_align;		int oldsize = array->alloced * array->elem_size;		int size = (num + 1) * array->elem_size;		void *nlist;		if (snd_BUG_ON(num >= 4096))			return NULL;		nlist = krealloc(array->list, size, GFP_KERNEL);		if (!nlist)			return NULL;		memset(nlist + oldsize, 0, size - oldsize);		array->list = nlist;		array->alloced = num;	}	return snd_array_elem(array, array->used++);}EXPORT_SYMBOL_GPL(snd_array_new); /** * snd_array_free - free the given array elements * @array: the array object */void snd_array_free(struct snd_array *array){	kfree(array->list);	array->used = 0;	array->alloced = 0;	array->list = NULL;}EXPORT_SYMBOL_GPL(snd_array_free);