intel-ish-hid/ishtp/client-buffers.c

23 	struct ishtp_cl_rb *rb;
28 		rb = ishtp_io_rb_init(cl);
29 		if (!rb) {
33 		ret = ishtp_io_rb_alloc_buf(rb, len);
37 		list_add_tail(&rb->list, &cl->free_rb_list.list);
99 	struct ishtp_cl_rb *rb;
105 		rb = list_entry(cl->free_rb_list.list.next, struct ishtp_cl_rb,
107 		list_del(&rb->list);
108 		kfree(rb->buffer.data);
109 		kfree(rb);
115 		rb = list_entry(cl->in_process_list.list.next,
117 		list_del(&rb->list);
118 		kfree(rb->buffer.data);
119 		kfree(rb);
161  * @rb: IO request block
165 void ishtp_io_rb_free(struct ishtp_cl_rb *rb)
167 	if (rb == NULL)
170 	kfree(rb->buffer.data);
171 	kfree(rb);
184 	struct ishtp_cl_rb *rb;
186 	rb = kzalloc(sizeof(struct ishtp_cl_rb), GFP_KERNEL);
187 	if (!rb)
190 	INIT_LIST_HEAD(&rb->list);
191 	rb->cl = cl;
192 	rb->buf_idx = 0;
193 	return rb;
198  * @rb: IO request block
205 int ishtp_io_rb_alloc_buf(struct ishtp_cl_rb *rb, size_t length)
207 	if (!rb)
213 	rb->buffer.data = kmalloc(length, GFP_KERNEL);
214 	if (!rb->buffer.data)
217 	rb->buffer.size = length;
223  * @rb: IO request block
225  * Re-append rb to its client's free list and send flow control if needed
229 int ishtp_cl_io_rb_recycle(struct ishtp_cl_rb *rb)
235 	if (!rb || !rb->cl)
238 	cl = rb->cl;
240 	list_add_tail(&rb->list, &cl->free_rb_list.list);
276  * ishtp_cl_rx_get_rb() -Get a rb from client device rx buffer list
279  * Check client device in-processing buffer list and get a rb from it.
281  * Return: rb pointer if buffer list isn't empty else NULL
286 	struct ishtp_cl_rb *rb;
289 	rb = list_first_entry_or_null(&cl->in_process_list.list,
291 	if (rb)
292 		list_del_init(&rb->list);
295 	return rb;