staging/fwserial: Add Kconfig options for max ports

Allow kernel configuration of max supported ports for
TTY-over-Firewire driver.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fwserial/Kconfig

@@ -9,3 +9,23 @@ config FIREWIRE_SERIAL
 
 	  To compile this driver as a module, say M here:  the module will
 	  be called firewire-serial.
+
+if FIREWIRE_SERIAL
+
+config FWTTY_MAX_TOTAL_PORTS
+       int "Maximum number of serial ports supported"
+       default "64"
+       help
+          Set this to the maximum number of serial ports you want the
+	  firewire-serial driver to support.
+
+config FWTTY_MAX_CARD_PORTS
+       int "Maximum number of serial ports supported per adapter"
+       range 0 FWTTY_MAX_TOTAL_PORTS
+       default "32"
+       help
+          Set this to the maximum number of serial ports each firewire
+	  adapter supports. The actual number of serial ports registered
+	  is set with the module parameter "ttys".
+
+endif

drivers/staging/fwserial/fwserial.h

@@ -291,8 +291,8 @@ struct fwtty_port {
 #define FREQ_BREAKS        (HZ / 50)
 
 /* Ports are allocated in blocks of num_ports for each fw_card */
-#define MAX_CARD_PORTS           32	/* max # of ports per card */
-#define MAX_TOTAL_PORTS          64	/* max # of ports total    */
+#define MAX_CARD_PORTS           CONFIG_FWTTY_MAX_CARD_PORTS
+#define MAX_TOTAL_PORTS          CONFIG_FWTTY_MAX_TOTAL_PORTS
 
 /* tuning parameters */
 #define FWTTY_PORT_TXFIFO_LEN	4096