/* Forward declaration of the interruption handling routine */
-static irqreturn_t mpc52xx_uart_int(int irq,void *dev_id,struct pt_regs *regs);
+static irqreturn_t mpc52xx_uart_int(int irq,void *dev_id);
/* Simple macro to test if a port is console or not. This one is taken
/* Request IRQ */
ret = request_irq(port->irq, mpc52xx_uart_int,
- SA_INTERRUPT | SA_SAMPLE_RANDOM, "mpc52xx_psc_uart", port);
+ IRQF_DISABLED | IRQF_SAMPLE_RANDOM, "mpc52xx_psc_uart", port);
if (ret)
return ret;
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
/* ======================================================================== */
static inline int
-mpc52xx_uart_int_rx_chars(struct uart_port *port, struct pt_regs *regs)
+mpc52xx_uart_int_rx_chars(struct uart_port *port)
{
struct tty_struct *tty = port->info->tty;
unsigned char ch, flag;
/* Handle sysreq char */
#ifdef SUPPORT_SYSRQ
- if (uart_handle_sysrq_char(port, ch, regs)) {
+ if (uart_handle_sysrq_char(port, ch)) {
port->sysrq = 0;
continue;
}
}
static irqreturn_t
-mpc52xx_uart_int(int irq, void *dev_id, struct pt_regs *regs)
+mpc52xx_uart_int(int irq, void *dev_id)
{
- struct uart_port *port = (struct uart_port *) dev_id;
+ struct uart_port *port = dev_id;
unsigned long pass = ISR_PASS_LIMIT;
unsigned int keepgoing;
unsigned short status;
- if ( irq != port->irq ) {
- printk( KERN_WARNING
- "mpc52xx_uart_int : " \
- "Received wrong int %d. Waiting for %d\n",
- irq, port->irq);
- return IRQ_NONE;
- }
-
spin_lock(&port->lock);
/* While we have stuff to do, we continue */
/* Do we need to receive chars ? */
/* For this RX interrupts must be on and some chars waiting */
if ( status & MPC52xx_PSC_IMR_RXRDY )
- keepgoing |= mpc52xx_uart_int_rx_chars(port, regs);
+ keepgoing |= mpc52xx_uart_int_rx_chars(port);
/* Do we need to send chars ? */
/* For this, TX must be ready and TX interrupt enabled */
spin_lock_init(&port->lock);
port->uartclk = __res.bi_ipbfreq / 2; /* Look at CTLR doc */
- port->fifosize = 255; /* Should be 512 ! But it can't be */
- /* stored in a unsigned char */
+ port->fifosize = 512;
port->iotype = UPIO_MEM;
port->flags = UPF_BOOT_AUTOCONF |
( uart_console(port) ? 0 : UPF_IOREMAP );