240 ssize_t rtlx_read(int index, void __user *buff, size_t count)  in rtlx_read()  argument
256 	count = min(count,  in rtlx_read()
261 	fl = min(count, (size_t)lx->buffer_size - lx->lx_read);  in rtlx_read()
268 	if (count - fl)  in rtlx_read()
269 		failed = copy_to_user(buff + fl, lx->lx_buffer, count - fl);  in rtlx_read()
272 	count -= failed;  in rtlx_read()
275 	lx->lx_read = (lx->lx_read + count) % lx->buffer_size;  in rtlx_read()
279 	return count;  in rtlx_read()
282 ssize_t rtlx_write(int index, const void __user *buffer, size_t count)  in rtlx_write()  argument
299 	count = min_t(size_t, count, write_spacefree(rt_read, rt->rt_write,  in rtlx_write()
303 	fl = min(count, (size_t) rt->buffer_size - rt->rt_write);  in rtlx_write()
310 	if (count - fl)  in rtlx_write()
311 		failed = copy_from_user(rt->rt_buffer, buffer + fl, count - fl);  in rtlx_write()
314 	count -= failed;  in rtlx_write()
317 	rt->rt_write = (rt->rt_write + count) % rt->buffer_size;  in rtlx_write()
323 	return count;  in rtlx_write()
359 static ssize_t file_read(struct file *file, char __user *buffer, size_t count,  in file_read()  argument
368 	return rtlx_read(minor, buffer, count);  in file_read()
372 			  size_t count, loff_t *ppos)  in file_write()  argument
389 	return rtlx_write(minor, buffer, count);  in file_write()