[SERIAL] 8250: serial8250_port_size() - omap ports are larger

A function to contain common code for the size of the resource we
need to allocate or free.  OMAP ports need 22 bytes rather than
the standard 8 bytes.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 14 insertions, 7 deletions

diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 47a60960bb1c..8058533f8418 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2211,7 +2211,7 @@ serial8250_set_termios(struct uart_port *port, struct ktermios *termios,
                 serial_outp(up, UART_EFR, efr);
         }
 
-#ifdef CONFIG_ARCH_OMAP15XX
+#ifdef CONFIG_ARCH_OMAP
         /* Workaround to enable 115200 baud on OMAP1510 internal ports */
         if (cpu_is_omap1510() && is_omap_port(up)) {
                 if (baud == 115200) {
@@ -2266,18 +2266,27 @@ serial8250_pm(struct uart_port *port, unsigned int state,
                 p->pm(port, state, oldstate);
 }
 
+static unsigned int serial8250_port_size(struct uart_8250_port *pt)
+{
+        if (pt->port.iotype == UPIO_AU)
+                return 0x100000;
+#ifdef CONFIG_ARCH_OMAP
+        if (is_omap_port(pt))
+                return 0x16 << pt->port.regshift;
+#endif
+        return 8 << pt->port.regshift;
+}
+
 /*
  * Resource handling.
  */
 static int serial8250_request_std_resource(struct uart_8250_port *up)
 {
-        unsigned int size = 8 << up->port.regshift;
+        unsigned int size = serial8250_port_size(up);
         int ret = 0;
 
         switch (up->port.iotype) {
         case UPIO_AU:
-                size = 0x100000;
-                /* fall thru */
         case UPIO_TSI:
         case UPIO_MEM32:
         case UPIO_MEM:
@@ -2311,12 +2320,10 @@ static int serial8250_request_std_resource(struct uart_8250_port *up)
 
 static void serial8250_release_std_resource(struct uart_8250_port *up)
 {
-        unsigned int size = 8 << up->port.regshift;
+        unsigned int size = serial8250_port_size(up);
 
         switch (up->port.iotype) {
         case UPIO_AU:
-                size = 0x100000;
-                /* fall thru */
         case UPIO_TSI:
         case UPIO_MEM32:
         case UPIO_MEM: