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Diffstat (limited to 'drivers/tty/serial/m32r_sio.c')
-rw-r--r--drivers/tty/serial/m32r_sio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/m32r_sio.c b/drivers/tty/serial/m32r_sio.c
index 84db732..8e07517 100644
--- a/drivers/tty/serial/m32r_sio.c
+++ b/drivers/tty/serial/m32r_sio.c
@@ -892,7 +892,7 @@ static int m32r_sio_request_port(struct uart_port *port)
* If we have a mapbase, then request that as well.
*/
if (ret == 0 && up->port.flags & UPF_IOREMAP) {
- int size = res->end - res->start + 1;
+ int size = resource_size(res);
up->port.membase = ioremap(up->port.mapbase, size);
if (!up->port.membase)
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