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| author | Ji-Ze Hong (Peter Hong) <hpeter@gmail.com> | 2020-01-30 13:47:47 +0800 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2020-02-25 12:29:52 +0100 |
| commit | 1afd37c6a335369a7927c732a93c0558b64e40bb (patch) | |
| tree | 9ba648d5f750badf067862501f78e1cee11acf4c /drivers/usb/serial/f81232.c | |
| parent | 2c0bee081315b18064fe39661e679b2fe6b86476 (diff) | |
| download | linux-stable-1afd37c6a335369a7927c732a93c0558b64e40bb.tar.gz linux-stable-1afd37c6a335369a7927c732a93c0558b64e40bb.tar.bz2 linux-stable-1afd37c6a335369a7927c732a93c0558b64e40bb.zip | |
USB: serial: f81232: extract LSR handler
Extract LSR handler to function that can be re-used by
F81532A/534A/535/536.
Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'drivers/usb/serial/f81232.c')
| -rw-r--r-- | drivers/usb/serial/f81232.c | 53 |
1 files changed, 30 insertions, 23 deletions
diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c index 43fa1f0716b7..c07d376c743d 100644 --- a/drivers/usb/serial/f81232.c +++ b/drivers/usb/serial/f81232.c @@ -322,10 +322,38 @@ exit: __func__, retval); } +static char f81232_handle_lsr(struct usb_serial_port *port, u8 lsr) +{ + struct f81232_private *priv = usb_get_serial_port_data(port); + char tty_flag = TTY_NORMAL; + + if (!(lsr & UART_LSR_BRK_ERROR_BITS)) + return tty_flag; + + if (lsr & UART_LSR_BI) { + tty_flag = TTY_BREAK; + port->icount.brk++; + usb_serial_handle_break(port); + } else if (lsr & UART_LSR_PE) { + tty_flag = TTY_PARITY; + port->icount.parity++; + } else if (lsr & UART_LSR_FE) { + tty_flag = TTY_FRAME; + port->icount.frame++; + } + + if (lsr & UART_LSR_OE) { + port->icount.overrun++; + schedule_work(&priv->lsr_work); + tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); + } + + return tty_flag; +} + static void f81232_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; - struct f81232_private *priv = usb_get_serial_port_data(port); unsigned char *data = urb->transfer_buffer; char tty_flag; unsigned int i; @@ -341,29 +369,8 @@ static void f81232_process_read_urb(struct urb *urb) /* bulk-in data: [LSR(1Byte)+DATA(1Byte)][LSR(1Byte)+DATA(1Byte)]... */ for (i = 0; i < urb->actual_length; i += 2) { - tty_flag = TTY_NORMAL; lsr = data[i]; - - if (lsr & UART_LSR_BRK_ERROR_BITS) { - if (lsr & UART_LSR_BI) { - tty_flag = TTY_BREAK; - port->icount.brk++; - usb_serial_handle_break(port); - } else if (lsr & UART_LSR_PE) { - tty_flag = TTY_PARITY; - port->icount.parity++; - } else if (lsr & UART_LSR_FE) { - tty_flag = TTY_FRAME; - port->icount.frame++; - } - - if (lsr & UART_LSR_OE) { - port->icount.overrun++; - schedule_work(&priv->lsr_work); - tty_insert_flip_char(&port->port, 0, - TTY_OVERRUN); - } - } + tty_flag = f81232_handle_lsr(port, lsr); if (port->port.console && port->sysrq) { if (usb_serial_handle_sysrq_char(port, data[i + 1])) |