static int linedisp_display()

in line-display.c [71:110]

• 27 lines of code
• 5 McCabe index (conditional complexity)

static int linedisp_display(struct linedisp *linedisp, const char *msg,
			    ssize_t count)
{
	char *new_msg;

	/* stop the scroll timer */
	del_timer_sync(&linedisp->timer);

	if (count == -1)
		count = strlen(msg);

	/* if the string ends with a newline, trim it */
	if (msg[count - 1] == '\n')
		count--;

	if (!count) {
		/* Clear the display */
		kfree(linedisp->message);
		linedisp->message = NULL;
		linedisp->message_len = 0;
		memset(linedisp->buf, ' ', linedisp->num_chars);
		linedisp->update(linedisp);
		return 0;
	}

	new_msg = kmemdup_nul(msg, count, GFP_KERNEL);
	if (!new_msg)
		return -ENOMEM;

	kfree(linedisp->message);

	linedisp->message = new_msg;
	linedisp->message_len = count;
	linedisp->scroll_pos = 0;

	/* update the display */
	linedisp_scroll(&linedisp->timer);

	return 0;
}