linux-kernel - question about lqasc_release_port in drivers/tty/serial/lantiq.c

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Message-ID: <alpine.DEB.2.02.1112261839190.1873@localhost6.localdomain6>
Date:	Mon, 26 Dec 2011 18:42:17 +0100 (CET)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	alan@...ux.intel.com, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: question about lqasc_release_port in drivers/tty/serial/lantiq.c

The function lqasc_release_port in the file drivers/tty/serial/lantiq.c is 
defined as follows:

static void
lqasc_release_port(struct uart_port *port)
{
  	if (port->flags & UPF_IOREMAP) {
         	iounmap(port->membase);
 		port->membase = NULL;
 	}
}

But port->membase is initialized using devm_ioremap_nocache, implying that 
it should be freed with devm_ioremap.  devm_ioremap, however, requires an 
additional &pdev->dev argument.  Maybe the call to iounmap is not needed 
at all?

julia
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