Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=406b7d4f7b6b4a19dadaaad0744466013afe59b8
Commit:     406b7d4f7b6b4a19dadaaad0744466013afe59b8
Parent:     94f389485e27641348c1951ab8d65157122a8939
Author:     John Rigby <[EMAIL PROTECTED]>
AuthorDate: Thu Jan 17 08:37:25 2008 +1100
Committer:  Grant Likely <[EMAIL PROTECTED]>
CommitDate: Mon Jan 21 11:01:33 2008 -0700

    [POWERPC] mpc5200: Cleanup checkpatch.pl problems in mpc52xx_uart.c
    
    In preparation of adding MPC5121 support
    cleanup some things that checkpatch.pl complains
    about also some minor fixes suggested by
    Stephen Rothwell.
    
    Signed-off-by: John Rigby <[EMAIL PROTECTED]>
    Signed-off-by: Grant Likely <[EMAIL PROTECTED]>
---
 drivers/serial/mpc52xx_uart.c |  200 ++++++++++++++++++++++-------------------
 1 files changed, 107 insertions(+), 93 deletions(-)

diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c
index 141b8da..1e3721a 100644
--- a/drivers/serial/mpc52xx_uart.c
+++ b/drivers/serial/mpc52xx_uart.c
@@ -36,7 +36,7 @@
  * DCD. However, the pin multiplexing aren't changed and should be set either
  * by the bootloader or in the platform init code.
  *
- * The idx field must be equal to the PSC index ( e.g. 0 for PSC1, 1 for PSC2,
+ * The idx field must be equal to the PSC index (e.g. 0 for PSC1, 1 for PSC2,
  * and so on). So the PSC1 is mapped to /dev/ttyPSC0, PSC2 to /dev/ttyPSC1 and
  * so on. But be warned, it's an ABSOLUTE REQUIREMENT ! This is needed mainly
  * fpr the console code : without this 1:1 mapping, at early boot time, when we
@@ -68,8 +68,8 @@
 #include <linux/sysrq.h>
 #include <linux/console.h>
 
-#include <asm/delay.h>
-#include <asm/io.h>
+#include <linux/delay.h>
+#include <linux/io.h>
 
 #if defined(CONFIG_PPC_MERGE)
 #include <linux/of.h>
@@ -116,13 +116,14 @@ static void mpc52xx_uart_of_enumerate(void);
 
 
 /* Forward declaration of the interruption handling routine */
-static irqreturn_t mpc52xx_uart_int(int irq,void *dev_id);
+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
  * for serial_core.c and maybe should be moved to serial_core.h ? */
 #ifdef CONFIG_SERIAL_CORE_CONSOLE
-#define uart_console(port)     ((port)->cons && (port)->cons->index == 
(port)->line)
+#define uart_console(port) \
+       ((port)->cons && (port)->cons->index == (port)->line)
 #else
 #define uart_console(port)     (0)
 #endif
@@ -164,7 +165,7 @@ mpc52xx_uart_stop_tx(struct uart_port *port)
 {
        /* port->lock taken by caller */
        port->read_status_mask &= ~MPC52xx_PSC_IMR_TXRDY;
-       out_be16(&PSC(port)->mpc52xx_psc_imr,port->read_status_mask);
+       out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
 }
 
 static void
@@ -172,7 +173,7 @@ mpc52xx_uart_start_tx(struct uart_port *port)
 {
        /* port->lock taken by caller */
        port->read_status_mask |= MPC52xx_PSC_IMR_TXRDY;
-       out_be16(&PSC(port)->mpc52xx_psc_imr,port->read_status_mask);
+       out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
 }
 
 static void
@@ -186,7 +187,7 @@ mpc52xx_uart_send_xchar(struct uart_port *port, char ch)
                /* Make sure tx interrupts are on */
                /* Truly necessary ??? They should be anyway */
                port->read_status_mask |= MPC52xx_PSC_IMR_TXRDY;
-               out_be16(&PSC(port)->mpc52xx_psc_imr,port->read_status_mask);
+               out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
        }
 
        spin_unlock_irqrestore(&port->lock, flags);
@@ -197,7 +198,7 @@ mpc52xx_uart_stop_rx(struct uart_port *port)
 {
        /* port->lock taken by caller */
        port->read_status_mask &= ~MPC52xx_PSC_IMR_RXRDY;
-       out_be16(&PSC(port)->mpc52xx_psc_imr,port->read_status_mask);
+       out_be16(&PSC(port)->mpc52xx_psc_imr, port->read_status_mask);
 }
 
 static void
@@ -212,10 +213,10 @@ mpc52xx_uart_break_ctl(struct uart_port *port, int ctl)
        unsigned long flags;
        spin_lock_irqsave(&port->lock, flags);
 
-       if ( ctl == -1 )
-               out_8(&PSC(port)->command,MPC52xx_PSC_START_BRK);
+       if (ctl == -1)
+               out_8(&PSC(port)->command, MPC52xx_PSC_START_BRK);
        else
-               out_8(&PSC(port)->command,MPC52xx_PSC_STOP_BRK);
+               out_8(&PSC(port)->command, MPC52xx_PSC_STOP_BRK);
 
        spin_unlock_irqrestore(&port->lock, flags);
 }
@@ -234,10 +235,10 @@ mpc52xx_uart_startup(struct uart_port *port)
                return ret;
 
        /* Reset/activate the port, clear and enable interrupts */
-       out_8(&psc->command,MPC52xx_PSC_RST_RX);
-       out_8(&psc->command,MPC52xx_PSC_RST_TX);
+       out_8(&psc->command, MPC52xx_PSC_RST_RX);
+       out_8(&psc->command, MPC52xx_PSC_RST_TX);
 
-       out_be32(&psc->sicr,0); /* UART mode DCD ignored */
+       out_be32(&psc->sicr, 0);        /* UART mode DCD ignored */
 
        out_be16(&psc->mpc52xx_psc_clock_select, 0xdd00); /* /16 prescaler on */
 
@@ -247,10 +248,10 @@ mpc52xx_uart_startup(struct uart_port *port)
        out_be16(&fifo->tfalarm, 0x80);
 
        port->read_status_mask |= MPC52xx_PSC_IMR_RXRDY | MPC52xx_PSC_IMR_TXRDY;
-       out_be16(&psc->mpc52xx_psc_imr,port->read_status_mask);
+       out_be16(&psc->mpc52xx_psc_imr, port->read_status_mask);
 
-       out_8(&psc->command,MPC52xx_PSC_TX_ENABLE);
-       out_8(&psc->command,MPC52xx_PSC_RX_ENABLE);
+       out_8(&psc->command, MPC52xx_PSC_TX_ENABLE);
+       out_8(&psc->command, MPC52xx_PSC_RX_ENABLE);
 
        return 0;
 }
@@ -261,12 +262,12 @@ mpc52xx_uart_shutdown(struct uart_port *port)
        struct mpc52xx_psc __iomem *psc = PSC(port);
 
        /* Shut down the port.  Leave TX active if on a console port */
-       out_8(&psc->command,MPC52xx_PSC_RST_RX);
+       out_8(&psc->command, MPC52xx_PSC_RST_RX);
        if (!uart_console(port))
-               out_8(&psc->command,MPC52xx_PSC_RST_TX);
+               out_8(&psc->command, MPC52xx_PSC_RST_TX);
 
        port->read_status_mask = 0;
-       out_be16(&psc->mpc52xx_psc_imr,port->read_status_mask);
+       out_be16(&psc->mpc52xx_psc_imr, port->read_status_mask);
 
        /* Release interrupt */
        free_irq(port->irq, port);
@@ -274,7 +275,7 @@ mpc52xx_uart_shutdown(struct uart_port *port)
 
 static void
 mpc52xx_uart_set_termios(struct uart_port *port, struct ktermios *new,
-                         struct ktermios *old)
+                        struct ktermios *old)
 {
        struct mpc52xx_psc __iomem *psc = PSC(port);
        unsigned long flags;
@@ -286,14 +287,14 @@ mpc52xx_uart_set_termios(struct uart_port *port, struct 
ktermios *new,
        mr1 = 0;
 
        switch (new->c_cflag & CSIZE) {
-               case CS5:       mr1 |= MPC52xx_PSC_MODE_5_BITS;
-                               break;
-               case CS6:       mr1 |= MPC52xx_PSC_MODE_6_BITS;
-                               break;
-               case CS7:       mr1 |= MPC52xx_PSC_MODE_7_BITS;
-                               break;
-               case CS8:
-               default:        mr1 |= MPC52xx_PSC_MODE_8_BITS;
+       case CS5:       mr1 |= MPC52xx_PSC_MODE_5_BITS;
+               break;
+       case CS6:       mr1 |= MPC52xx_PSC_MODE_6_BITS;
+               break;
+       case CS7:       mr1 |= MPC52xx_PSC_MODE_7_BITS;
+               break;
+       case CS8:
+       default:        mr1 |= MPC52xx_PSC_MODE_8_BITS;
        }
 
        if (new->c_cflag & PARENB) {
@@ -335,24 +336,24 @@ mpc52xx_uart_set_termios(struct uart_port *port, struct 
ktermios *new,
                udelay(1);
 
        if (!j)
-               printk( KERN_ERR "mpc52xx_uart.c: "
+               printk(KERN_ERR "mpc52xx_uart.c: "
                        "Unable to flush RX & TX fifos in-time in set_termios."
-                       "Some chars may have been lost.\n" );
+                       "Some chars may have been lost.\n");
 
        /* Reset the TX & RX */
-       out_8(&psc->command,MPC52xx_PSC_RST_RX);
-       out_8(&psc->command,MPC52xx_PSC_RST_TX);
+       out_8(&psc->command, MPC52xx_PSC_RST_RX);
+       out_8(&psc->command, MPC52xx_PSC_RST_TX);
 
        /* Send new mode settings */
-       out_8(&psc->command,MPC52xx_PSC_SEL_MODE_REG_1);
-       out_8(&psc->mode,mr1);
-       out_8(&psc->mode,mr2);
-       out_8(&psc->ctur,ctr >> 8);
-       out_8(&psc->ctlr,ctr & 0xff);
+       out_8(&psc->command, MPC52xx_PSC_SEL_MODE_REG_1);
+       out_8(&psc->mode, mr1);
+       out_8(&psc->mode, mr2);
+       out_8(&psc->ctur, ctr >> 8);
+       out_8(&psc->ctlr, ctr & 0xff);
 
        /* Reenable TX & RX */
-       out_8(&psc->command,MPC52xx_PSC_TX_ENABLE);
-       out_8(&psc->command,MPC52xx_PSC_RX_ENABLE);
+       out_8(&psc->command, MPC52xx_PSC_TX_ENABLE);
+       out_8(&psc->command, MPC52xx_PSC_RX_ENABLE);
 
        /* We're all set, release the lock */
        spin_unlock_irqrestore(&port->lock, flags);
@@ -367,7 +368,8 @@ mpc52xx_uart_type(struct uart_port *port)
 static void
 mpc52xx_uart_release_port(struct uart_port *port)
 {
-       if (port->flags & UPF_IOREMAP) { /* remapped by us ? */
+       /* remapped by us ? */
+       if (port->flags & UPF_IOREMAP) {
                iounmap(port->membase);
                port->membase = NULL;
        }
@@ -382,7 +384,7 @@ mpc52xx_uart_request_port(struct uart_port *port)
 
        if (port->flags & UPF_IOREMAP) /* Need to remap ? */
                port->membase = ioremap(port->mapbase,
-                                       sizeof(struct mpc52xx_psc));
+                                       sizeof(struct mpc52xx_psc));
 
        if (!port->membase)
                return -EINVAL;
@@ -401,22 +403,22 @@ mpc52xx_uart_request_port(struct uart_port *port)
 static void
 mpc52xx_uart_config_port(struct uart_port *port, int flags)
 {
-       if ( (flags & UART_CONFIG_TYPE) &&
-            (mpc52xx_uart_request_port(port) == 0) )
-               port->type = PORT_MPC52xx;
+       if ((flags & UART_CONFIG_TYPE)
+               && (mpc52xx_uart_request_port(port) == 0))
+               port->type = PORT_MPC52xx;
 }
 
 static int
 mpc52xx_uart_verify_port(struct uart_port *port, struct serial_struct *ser)
 {
-       if ( ser->type != PORT_UNKNOWN && ser->type != PORT_MPC52xx )
+       if (ser->type != PORT_UNKNOWN && ser->type != PORT_MPC52xx)
                return -EINVAL;
 
-       if ( (ser->irq != port->irq) ||
-            (ser->io_type != SERIAL_IO_MEM) ||
-            (ser->baud_base != port->uartclk)  ||
-            (ser->iomem_base != (void*)port->mapbase) ||
-            (ser->hub6 != 0 ) )
+       if ((ser->irq != port->irq) ||
+           (ser->io_type != SERIAL_IO_MEM) ||
+           (ser->baud_base != port->uartclk)  ||
+           (ser->iomem_base != (void *)port->mapbase) ||
+           (ser->hub6 != 0))
                return -EINVAL;
 
        return 0;
@@ -458,8 +460,8 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port)
        unsigned short status;
 
        /* While we can read, do so ! */
-       while ( (status = in_be16(&PSC(port)->mpc52xx_psc_status)) &
-               MPC52xx_PSC_SR_RXRDY) {
+       while ((status = in_be16(&PSC(port)->mpc52xx_psc_status)) &
+               MPC52xx_PSC_SR_RXRDY) {
 
                /* Get the char */
                ch = in_8(&PSC(port)->mpc52xx_psc_buffer_8);
@@ -477,9 +479,9 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port)
                flag = TTY_NORMAL;
                port->icount.rx++;
 
-               if ( status & (MPC52xx_PSC_SR_PE |
-                              MPC52xx_PSC_SR_FE |
-                              MPC52xx_PSC_SR_RB) ) {
+               if (status & (MPC52xx_PSC_SR_PE |
+                             MPC52xx_PSC_SR_FE |
+                             MPC52xx_PSC_SR_RB)) {
 
                        if (status & MPC52xx_PSC_SR_RB) {
                                flag = TTY_BREAK;
@@ -490,7 +492,7 @@ mpc52xx_uart_int_rx_chars(struct uart_port *port)
                                flag = TTY_FRAME;
 
                        /* Clear error condition */
-                       out_8(&PSC(port)->command,MPC52xx_PSC_RST_ERR_STAT);
+                       out_8(&PSC(port)->command, MPC52xx_PSC_RST_ERR_STAT);
 
                }
                tty_insert_flip_char(tty, ch, flag);
@@ -571,16 +573,16 @@ mpc52xx_uart_int(int irq, void *dev_id)
 
                /* Do we need to receive chars ? */
                /* For this RX interrupts must be on and some chars waiting */
-               if ( status & MPC52xx_PSC_IMR_RXRDY )
+               if (status & MPC52xx_PSC_IMR_RXRDY)
                        keepgoing |= mpc52xx_uart_int_rx_chars(port);
 
                /* Do we need to send chars ? */
                /* For this, TX must be ready and TX interrupt enabled */
-               if ( status & MPC52xx_PSC_IMR_TXRDY )
+               if (status & MPC52xx_PSC_IMR_TXRDY)
                        keepgoing |= mpc52xx_uart_int_tx_chars(port);
 
                /* Limit number of iteration */
-               if ( !(--pass) )
+               if (!(--pass))
                        keepgoing = 0;
 
        } while (keepgoing);
@@ -599,7 +601,7 @@ mpc52xx_uart_int(int irq, void *dev_id)
 
 static void __init
 mpc52xx_console_get_options(struct uart_port *port,
-                            int *baud, int *parity, int *bits, int *flow)
+                           int *baud, int *parity, int *bits, int *flow)
 {
        struct mpc52xx_psc __iomem *psc = PSC(port);
        unsigned char mr1;
@@ -607,7 +609,7 @@ mpc52xx_console_get_options(struct uart_port *port,
        pr_debug("mpc52xx_console_get_options(port=%p)\n", port);
 
        /* Read the mode registers */
-       out_8(&psc->command,MPC52xx_PSC_SEL_MODE_REG_1);
+       out_8(&psc->command, MPC52xx_PSC_SEL_MODE_REG_1);
        mr1 = in_8(&psc->mode);
 
        /* CT{U,L}R are write-only ! */
@@ -619,11 +621,18 @@ mpc52xx_console_get_options(struct uart_port *port,
 
        /* Parse them */
        switch (mr1 & MPC52xx_PSC_MODE_BITS_MASK) {
-               case MPC52xx_PSC_MODE_5_BITS:   *bits = 5; break;
-               case MPC52xx_PSC_MODE_6_BITS:   *bits = 6; break;
-               case MPC52xx_PSC_MODE_7_BITS:   *bits = 7; break;
-               case MPC52xx_PSC_MODE_8_BITS:
-               default:                        *bits = 8;
+       case MPC52xx_PSC_MODE_5_BITS:
+               *bits = 5;
+               break;
+       case MPC52xx_PSC_MODE_6_BITS:
+               *bits = 6;
+               break;
+       case MPC52xx_PSC_MODE_7_BITS:
+               *bits = 7;
+               break;
+       case MPC52xx_PSC_MODE_8_BITS:
+       default:
+               *bits = 8;
        }
 
        if (mr1 & MPC52xx_PSC_MODE_PARNONE)
@@ -660,7 +669,7 @@ mpc52xx_console_write(struct console *co, const char *s, 
unsigned int count)
                /* Wait the TX buffer to be empty */
                j = 20000;      /* Maximum wait */
                while (!(in_be16(&psc->mpc52xx_psc_status) &
-                        MPC52xx_PSC_SR_TXEMP) && --j)
+                        MPC52xx_PSC_SR_TXEMP) && --j)
                        udelay(1);
        }
 
@@ -733,16 +742,18 @@ mpc52xx_console_setup(struct console *co, char *options)
        }
 
        pr_debug("Console on ttyPSC%x is %s\n",
-                co->index, mpc52xx_uart_nodes[co->index]->full_name);
+                co->index, mpc52xx_uart_nodes[co->index]->full_name);
 
        /* Fetch register locations */
-       if ((ret = of_address_to_resource(np, 0, &res)) != 0) {
+       ret = of_address_to_resource(np, 0, &res);
+       if (ret) {
                pr_debug("Could not get resources for PSC%x\n", co->index);
                return ret;
        }
 
        /* Search for bus-frequency property in this node or a parent */
-       if ((ipb_freq = mpc52xx_find_ipb_freq(np)) == 0) {
+       ipb_freq = mpc52xx_find_ipb_freq(np);
+       if (ipb_freq == 0) {
                pr_debug("Could not find IPB bus frequency!\n");
                return -EINVAL;
        }
@@ -760,7 +771,8 @@ mpc52xx_console_setup(struct console *co, char *options)
                return -EINVAL;
 
        pr_debug("mpc52xx-psc uart at %p, mapped to %p, irq=%x, freq=%i\n",
-                (void*)port->mapbase, port->membase, port->irq, port->uartclk);
+                (void *)port->mapbase, port->membase,
+                port->irq, port->uartclk);
 
        /* Setup the port parameters accoding to options */
        if (options)
@@ -769,7 +781,7 @@ mpc52xx_console_setup(struct console *co, char *options)
                mpc52xx_console_get_options(port, &baud, &parity, &bits, &flow);
 
        pr_debug("Setting console parameters: %i %i%c1 flow=%c\n",
-                baud, bits, parity, flow);
+                baud, bits, parity, flow);
 
        return uart_set_options(port, co, baud, parity, bits, flow);
 }
@@ -784,7 +796,7 @@ static struct console mpc52xx_console = {
        .device = uart_console_device,
        .setup  = mpc52xx_console_setup,
        .flags  = CON_PRINTBUFFER,
-       .index  = -1,   /* Specified on the cmdline (e.g. console=ttyPSC0 ) */
+       .index  = -1,   /* Specified on the cmdline (e.g. console=ttyPSC0) */
        .data   = &mpc52xx_uart_driver,
 };
 
@@ -812,7 +824,6 @@ console_initcall(mpc52xx_console_init);
 /* ======================================================================== */
 
 static struct uart_driver mpc52xx_uart_driver = {
-       .owner          = THIS_MODULE,
        .driver_name    = "mpc52xx_psc_uart",
        .dev_name       = "ttyPSC",
        .major          = SERIAL_PSC_MAJOR,
@@ -840,7 +851,7 @@ mpc52xx_uart_probe(struct platform_device *dev)
        if (idx < 0 || idx >= MPC52xx_PSC_MAXNUM)
                return -EINVAL;
 
-       if (!mpc52xx_match_psc_function(idx,"uart"))
+       if (!mpc52xx_match_psc_function(idx, "uart"))
                return -ENODEV;
 
        /* Init the port structure */
@@ -851,13 +862,13 @@ mpc52xx_uart_probe(struct platform_device *dev)
        port->fifosize  = 512;
        port->iotype    = UPIO_MEM;
        port->flags     = UPF_BOOT_AUTOCONF |
-                         ( uart_console(port) ? 0 : UPF_IOREMAP );
+                         (uart_console(port) ? 0 : UPF_IOREMAP);
        port->line      = idx;
        port->ops       = &mpc52xx_uart_ops;
        port->dev       = &dev->dev;
 
        /* Search for IRQ and mapbase */
-       for (i=0 ; i<dev->num_resources ; i++, res++) {
+       for (i = 0 ; i < dev->num_resources ; i++, res++) {
                if (res->flags & IORESOURCE_MEM)
                        port->mapbase = res->start;
                else if (res->flags & IORESOURCE_IRQ)
@@ -869,7 +880,7 @@ mpc52xx_uart_probe(struct platform_device *dev)
        /* Add the port to the uart sub-system */
        ret = uart_add_one_port(&mpc52xx_uart_driver, port);
        if (!ret)
-               platform_set_drvdata(dev, (void*)port);
+               platform_set_drvdata(dev, (void *)port);
 
        return ret;
 }
@@ -920,6 +931,7 @@ static struct platform_driver mpc52xx_uart_platform_driver 
= {
        .resume         = mpc52xx_uart_resume,
 #endif
        .driver         = {
+               .owner  = THIS_MODULE,
                .name   = "mpc52xx-psc",
        },
 };
@@ -949,10 +961,11 @@ mpc52xx_uart_of_probe(struct of_device *op, const struct 
of_device_id *match)
        if (idx >= MPC52xx_PSC_MAXNUM)
                return -EINVAL;
        pr_debug("Found %s assigned to ttyPSC%x\n",
-                mpc52xx_uart_nodes[idx]->full_name, idx);
+                mpc52xx_uart_nodes[idx]->full_name, idx);
 
        /* Search for bus-frequency property in this node or a parent */
-       if ((ipb_freq = mpc52xx_find_ipb_freq(op->node)) == 0) {
+       ipb_freq = mpc52xx_find_ipb_freq(op->node);
+       if (ipb_freq == 0) {
                dev_dbg(&op->dev, "Could not find IPB bus frequency!\n");
                return -EINVAL;
        }
@@ -965,22 +978,23 @@ mpc52xx_uart_of_probe(struct of_device *op, const struct 
of_device_id *match)
        port->fifosize  = 512;
        port->iotype    = UPIO_MEM;
        port->flags     = UPF_BOOT_AUTOCONF |
-                         ( uart_console(port) ? 0 : UPF_IOREMAP );
+                         (uart_console(port) ? 0 : UPF_IOREMAP);
        port->line      = idx;
        port->ops       = &mpc52xx_uart_ops;
        port->dev       = &op->dev;
 
        /* Search for IRQ and mapbase */
-       if ((ret = of_address_to_resource(op->node, 0, &res)) != 0)
+       ret = of_address_to_resource(op->node, 0, &res);
+       if (ret)
                return ret;
 
        port->mapbase = res.start;
        port->irq = irq_of_parse_and_map(op->node, 0);
 
        dev_dbg(&op->dev, "mpc52xx-psc uart at %p, irq=%x, freq=%i\n",
-               (void*)port->mapbase, port->irq, port->uartclk);
+               (void *)port->mapbase, port->irq, port->uartclk);
 
-       if ((port->irq==NO_IRQ) || !port->mapbase) {
+       if ((port->irq == NO_IRQ) || !port->mapbase) {
                printk(KERN_ERR "Could not allocate resources for PSC\n");
                return -EINVAL;
        }
@@ -988,7 +1002,7 @@ mpc52xx_uart_of_probe(struct of_device *op, const struct 
of_device_id *match)
        /* Add the port to the uart sub-system */
        ret = uart_add_one_port(&mpc52xx_uart_driver, port);
        if (!ret)
-               dev_set_drvdata(&op->dev, (void*)port);
+               dev_set_drvdata(&op->dev, (void *)port);
 
        return ret;
 }
@@ -1051,6 +1065,7 @@ mpc52xx_uart_of_assign(struct device_node *np, int idx)
        if (idx < 0)
                return; /* No free slot; abort */
 
+       of_node_get(np);
        /* If the slot is already occupied, then swap slots */
        if (mpc52xx_uart_nodes[idx] && (free_idx != -1))
                mpc52xx_uart_nodes[free_idx] = mpc52xx_uart_nodes[idx];
@@ -1060,7 +1075,7 @@ mpc52xx_uart_of_assign(struct device_node *np, int idx)
 static void
 mpc52xx_uart_of_enumerate(void)
 {
-       static int enum_done = 0;
+       static int enum_done;
        struct device_node *np;
        const unsigned int *devno;
        int i;
@@ -1074,7 +1089,7 @@ mpc52xx_uart_of_enumerate(void)
 
                /* Is a particular device number requested? */
                devno = of_get_property(np, "port-number", NULL);
-               mpc52xx_uart_of_assign(of_node_get(np), devno ? *devno : -1);
+               mpc52xx_uart_of_assign(np, devno ? *devno : -1);
        }
 
        enum_done = 1;
@@ -1082,15 +1097,13 @@ mpc52xx_uart_of_enumerate(void)
        for (i = 0; i < MPC52xx_PSC_MAXNUM; i++) {
                if (mpc52xx_uart_nodes[i])
                        pr_debug("%s assigned to ttyPSC%x\n",
-                                mpc52xx_uart_nodes[i]->full_name, i);
+                                mpc52xx_uart_nodes[i]->full_name, i);
        }
 }
 
 MODULE_DEVICE_TABLE(of, mpc52xx_uart_of_match);
 
 static struct of_platform_driver mpc52xx_uart_of_driver = {
-       .owner          = THIS_MODULE,
-       .name           = "mpc52xx-psc-uart",
        .match_table    = mpc52xx_uart_of_match,
        .probe          = mpc52xx_uart_of_probe,
        .remove         = mpc52xx_uart_of_remove,
@@ -1116,7 +1129,8 @@ mpc52xx_uart_init(void)
 
        printk(KERN_INFO "Serial: MPC52xx PSC UART driver\n");
 
-       if ((ret = uart_register_driver(&mpc52xx_uart_driver)) != 0) {
+       ret = uart_register_driver(&mpc52xx_uart_driver);
+       if (ret) {
                printk(KERN_ERR "%s: uart_register_driver failed (%i)\n",
                       __FILE__, ret);
                return ret;
-
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