Lines Matching defs:buf
161 char __user *buf, size_t count)
176 ret = copy_to_user(buf, ptr, count);
178 ret = copy_to_user(buf, ptr, n);
179 ret += copy_to_user(buf + n, rtd->dma_area, count - n);
201 char *buf;
209 buf = kzalloc(PAGE_SIZE, GFP_KERNEL);
210 if (!buf)
224 offset = strlen(buf);
226 ret = snprintf(buf + offset, remaining,
231 buf[offset] = '\0';
236 ret = simple_read_from_buffer(to, count, ppos, buf, strlen(buf));
247 kfree(buf);