[PATCH] serial: mpsc driver passes bad devname to request_irq()

The devname passed to request_irq() contained a '/' which is wrong.  At
a minimum, the '/' prevented the devname from showing up in
/proc/irq/<irq>/<devname>.  This patch replaces the '/' with a '-' to
fixes that problem.
Reported-by: Stephane Chazelas <Stephane@artesyncp.com>
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/serial/mpsc.c

@@ -1165,7 +1165,7 @@ mpsc_startup(struct uart_port *port)
 			flag = SA_SHIRQ;
 
 		if (request_irq(pi->port.irq, mpsc_sdma_intr, flag,
-				"mpsc/sdma", pi))
+				"mpsc-sdma", pi))
 			printk(KERN_ERR "MPSC: Can't get SDMA IRQ %d\n",
 			       pi->port.irq);