diff options
| author | Feng Tang <feng.tang@intel.com> | 2012-02-06 17:24:44 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-09 09:02:25 -0800 |
| commit | 30c6c6b5bf82d4f4a23235a0aa0657681d1c21f2 (patch) | |
| tree | 40fa6b489078907ee9e9168984d68fe990b9aa8a /drivers/tty/serial/pch_uart.c | |
| parent | d011411ddb294e90511211a9edfc79da1c0465dc (diff) | |
serial: pch_uart: trivial cleanup by removing the get_msr()
The short get_msr() has some unnecessary code and only used once,
so merge it with its caller to make code cleaner. No functional
change at all.
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/pch_uart.c')
| -rw-r--r-- | drivers/tty/serial/pch_uart.c | 29 |
1 files changed, 8 insertions, 21 deletions
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index 6d9ca293336..811edcbe730 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -373,14 +373,6 @@ static void pch_uart_hal_request(struct pci_dev *pdev, int fifosize, priv->fcr = 0; } -static unsigned int get_msr(struct eg20t_port *priv, void __iomem *base) -{ - unsigned int msr = ioread8(base + UART_MSR); - priv->dmsr |= msr & PCH_UART_MSR_DELTA; - - return msr; -} - static void pch_uart_hal_enable_interrupt(struct eg20t_port *priv, unsigned int flag) { @@ -514,8 +506,9 @@ static int pch_uart_hal_set_fifo(struct eg20t_port *priv, static u8 pch_uart_hal_get_modem(struct eg20t_port *priv) { - priv->dmsr = 0; - return get_msr(priv, priv->membase); + unsigned int msr = ioread8(priv->membase + UART_MSR); + priv->dmsr = msr & PCH_UART_MSR_DELTA; + return (u8)msr; } static void pch_uart_hal_write(struct eg20t_port *priv, @@ -596,7 +589,7 @@ static int push_rx(struct eg20t_port *priv, const unsigned char *buf, static int pop_tx_x(struct eg20t_port *priv, unsigned char *buf) { - int ret; + int ret = 0; struct uart_port *port = &priv->port; if (port->x_char) { @@ -605,8 +598,6 @@ static int pop_tx_x(struct eg20t_port *priv, unsigned char *buf) buf[0] = port->x_char; port->x_char = 0; ret = 1; - } else { - ret = 0; } return ret; @@ -1104,14 +1095,12 @@ static irqreturn_t pch_uart_interrupt(int irq, void *dev_id) static unsigned int pch_uart_tx_empty(struct uart_port *port) { struct eg20t_port *priv; - int ret; + priv = container_of(port, struct eg20t_port, port); if (priv->tx_empty) - ret = TIOCSER_TEMT; + return TIOCSER_TEMT; else - ret = 0; - - return ret; + return 0; } /* Returns the current state of modem control inputs. */ @@ -1345,9 +1334,8 @@ static void pch_uart_set_termios(struct uart_port *port, else parity = PCH_UART_HAL_PARITY_EVEN; - } else { + } else parity = PCH_UART_HAL_PARITY_NONE; - } /* Only UART0 has auto hardware flow function */ if ((termios->c_cflag & CRTSCTS) && (priv->fifo_size == 256)) @@ -1519,7 +1507,6 @@ static void pch_console_write(struct console *co, const char *s, unsigned int count) { struct eg20t_port *priv; - unsigned long flags; u8 ier; int locked = 1; |