pch_uart: Use uartclk instead of base_baud

The term "base baud" refers to the fastest baud rate the device can communicate
at. This is clock/16. pch_uart is using base_baud as the clock itself. Rename
the variables to be semantically correct.

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
CC: Tomoya MORINAGA <tomoya.rohm@gmail.com>
CC: Feng Tang <feng.tang@intel.com>
CC: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c
index aa4d07b..5178213 100644 (file)
--- a/drivers/tty/serial/pch_uart.c
+++ b/drivers/tty/serial/pch_uart.c
@@ -206,7 +206,7 @@ enum {
 
 #define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
 
-#define DEFAULT_BAUD_RATE 1843200 /* 1.8432MHz */
+#define DEFAULT_UARTCLK 1843200 /* 1.8432MHz */
 
 struct pch_uart_buffer {
        unsigned char *buf;
@@ -221,7 +221,7 @@ struct eg20t_port {
        unsigned int iobase;
        struct pci_dev *pdev;
        int fifo_size;
-       int base_baud;
+       int uartclk;
        int start_tx;
        int start_rx;
        int tx_empty;
@@ -387,7 +387,7 @@ static int pch_uart_hal_set_line(struct eg20t_port *priv, int baud,
        unsigned int dll, dlm, lcr;
        int div;
 
-       div = DIV_ROUND_CLOSEST(priv->base_baud / 16, baud);
+       div = DIV_ROUND_CLOSEST(priv->uartclk / 16, baud);
        if (div < 0 || USHRT_MAX <= div) {
                dev_err(priv->port.dev, "Invalid Baud(div=0x%x)\n", div);
                return -EINVAL;
@@ -1205,9 +1205,9 @@ static int pch_uart_startup(struct uart_port *port)
        priv->tx_empty = 1;
 
        if (port->uartclk)
-               priv->base_baud = port->uartclk;
+               priv->uartclk = port->uartclk;
        else
-               port->uartclk = priv->base_baud;
+               port->uartclk = priv->uartclk;
 
        pch_uart_hal_disable_interrupt(priv, PCH_UART_HAL_ALL_INT);
        ret = pch_uart_hal_set_line(priv, default_baud,
@@ -1557,7 +1557,7 @@ static int __init pch_console_setup(struct console *co, char *options)
                return -ENODEV;
 
        /* setup uartclock */
-       port->uartclk = DEFAULT_BAUD_RATE;
+       port->uartclk = DEFAULT_UARTCLK;
 
        if (options)
                uart_parse_options(options, &baud, &parity, &bits, &flow);
@@ -1600,7 +1600,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
        unsigned int iobase;
        unsigned int mapbase;
        unsigned char *rxbuf;
-       int fifosize, base_baud;
+       int fifosize, uartclk;
        int port_type;
        struct pch_uart_driver_data *board;
        const char *board_name;
@@ -1617,12 +1617,12 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
        if (!rxbuf)
                goto init_port_free_txbuf;
 
-       base_baud = DEFAULT_BAUD_RATE;
+       uartclk = DEFAULT_UARTCLK;
 
        /* quirk for CM-iTC board */
        board_name = dmi_get_system_info(DMI_BOARD_NAME);
        if (board_name && strstr(board_name, "CM-iTC"))
-               base_baud = 192000000; /* 192.0MHz */
+               uartclk = 192000000; /* 192.0MHz */
 
        switch (port_type) {
        case PORT_UNKNOWN:
@@ -1648,7 +1648,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev,
        priv->rxbuf.size = PAGE_SIZE;
 
        priv->fifo_size = fifosize;
-       priv->base_baud = base_baud;
+       priv->uartclk = uartclk;
        priv->port_type = PORT_MAX_8250 + port_type + 1;
        priv->port.dev = &pdev->dev;
        priv->port.iobase = iobase;