diff options
| -rw-r--r-- | drivers/tty/serial/8250/8250_brcm_bt.c | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/drivers/tty/serial/8250/8250_brcm_bt.c b/drivers/tty/serial/8250/8250_brcm_bt.c index a05018f87cd..2de2f3c249f 100644 --- a/drivers/tty/serial/8250/8250_brcm_bt.c +++ b/drivers/tty/serial/8250/8250_brcm_bt.c @@ -32,15 +32,6 @@ bt_serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr) int n_fifo; int mcr; - /* Check whether Auto Flow control is enable in Modem control register - * */ - mcr = port->serial_in(port, UART_MCR); - if (mcr & UART_MCR_AFE) { - afe_status = 1; - /* Disabling Auto flow control */ - port->serial_out(port, UART_MCR, mcr & (~UART_MCR_AFE)); - } - /* Handle port gets called from either the interrupt context * _OR_ from the timeout thread context (serial8250_timeout). * @@ -120,36 +111,11 @@ bt_serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr) flag = TTY_FRAME; } - if (afe_status) { - /* Re-enable AFE if FIFO level go up. (this is not - * common)*/ - n_fifo = port->serial_in(port, UART_RX_FIFO_LEVEL); - /* FIXME: Currently this is added as a workaround for - * BT throughput. Received data available interrpt is - * generated when FIFO is Half full. - * Making sure we have enough time to clear the fifo by - * initially disabling the auto flow control. When FIFO - * has more than 150 bytes, enable the auto flow - * control so that we dont run into overrun condition. - * */ - if (n_fifo >= 150) { - mcr = port->serial_in(port, UART_MCR); - port->serial_out(port, UART_MCR, mcr | (UART_MCR_AFE)); - afe_status = 0; - } - } - uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag); ignore_char: lsr = port->serial_in(port, UART_LSR); } while ((lsr & (UART_LSR_DR | UART_LSR_BI)) && (max_count-- > 0)); - /* Keep the Auto flow control to its pervious state.*/ - if (afe_status) { - /* MUST enable AFE when exit this routine */ - mcr = port->serial_in(port, UART_MCR); - port->serial_out(port, UART_MCR, mcr | (UART_MCR_AFE)); - } spin_unlock(&up->port.lock); tty_flip_buffer_push(&port->state->port); spin_lock(&up->port.lock); |