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[PATCH] ioremap balanced with iounmap for drivers/serial/mpc52xx_uart.c

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ioremap must be balanced by an iounmap and failing to do so can result
in a memory leak.

Signed-off-by: Amol Lad <amol@verismonetworks.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Amol Lad 2006-09-30 23:29:23 -07:00 committed by Linus Torvalds
parent 6257b3bdfd
commit be618f550c
1 changed files with 10 additions and 1 deletions
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11
drivers/serial/mpc52xx_uart.c
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@ -338,14 +338,23 @@ mpc52xx_uart_release_port(struct uart_port *port)
static int
mpc52xx_uart_request_port(struct uart_port *port)
{
int err;
if (port->flags & UPF_IOREMAP) /* Need to remap ? */
port->membase = ioremap(port->mapbase, MPC52xx_PSC_SIZE);
if (!port->membase)
return -EINVAL;
return request_mem_region(port->mapbase, MPC52xx_PSC_SIZE,
err = request_mem_region(port->mapbase, MPC52xx_PSC_SIZE,
"mpc52xx_psc_uart") != NULL ? 0 : -EBUSY;
if (err && (port->flags & UPF_IOREMAP)) {
iounmap(port->membase);
port->membase = NULL;
}
return err;
}
static void