commit: http://blackfin.uclinux.org/git/?p=linux-kernel;a=commitdiff;h=25528ce087ca90c81363d2068243dcc8c7efc6a6 branch: http://blackfin.uclinux.org/git/?p=linux-kernel;a=shortlog;h=refs/heads/2011R1
Blackfin hardware CTS control generate interrupt for both CTS on and off. Signed-off-by: Sonic Zhang <[email protected]> --- drivers/tty/serial/bfin_uart.c | 24 +----------------------- 1 files changed, 1 insertions(+), 23 deletions(-) diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c index ad3c68e..21bfa9a 100644 --- a/drivers/tty/serial/bfin_uart.c +++ b/drivers/tty/serial/bfin_uart.c @@ -119,12 +119,10 @@ static irqreturn_t bfin_serial_mctrl_cts_int(int irq, void *dev_id) unsigned int status; status = bfin_serial_get_mctrl(&uart->port); - uart_handle_cts_change(&uart->port, status & TIOCM_CTS); #ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS - uart->scts = 1; UART_CLEAR_SCTS(uart); - UART_CLEAR_IER(uart, EDSSI); #endif + uart_handle_cts_change(&uart->port, status & TIOCM_CTS); return IRQ_HANDLED; } @@ -175,13 +173,6 @@ static void bfin_serial_start_tx(struct uart_port *port) struct bfin_serial_port *uart = (struct bfin_serial_port *)port; struct tty_struct *tty = uart->port.state->port.tty; -#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS - if (uart->scts && !(bfin_serial_get_mctrl(&uart->port) & TIOCM_CTS)) { - uart->scts = 0; - uart_handle_cts_change(&uart->port, uart->scts); - } -#endif - /* * To avoid losting RX interrupt, we reset IR function * before sending data. @@ -380,12 +371,6 @@ static irqreturn_t bfin_serial_tx_int(int irq, void *dev_id) { struct bfin_serial_port *uart = dev_id; -#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS - if (uart->scts && !(bfin_serial_get_mctrl(&uart->port) & TIOCM_CTS)) { - uart->scts = 0; - uart_handle_cts_change(&uart->port, uart->scts); - } -#endif spin_lock(&uart->port.lock); if (UART_GET_LSR(uart) & THRE) bfin_serial_tx_chars(uart); @@ -531,13 +516,6 @@ static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id) struct bfin_serial_port *uart = dev_id; struct circ_buf *xmit = &uart->port.state->xmit; -#ifdef CONFIG_SERIAL_BFIN_HARD_CTSRTS - if (uart->scts && !(bfin_serial_get_mctrl(&uart->port)&TIOCM_CTS)) { - uart->scts = 0; - uart_handle_cts_change(&uart->port, uart->scts); - } -#endif - spin_lock(&uart->port.lock); if (!(get_dma_curr_irqstat(uart->tx_dma_channel)&DMA_RUN)) { disable_dma(uart->tx_dma_channel);
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