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USB: ssu100: fix overrun-error reporting 

commit 75bcbf29c284dd0154c3e895a0bd1ef0e796160e upstream.

Fix reporting of overrun errors, which should only be reported once
using the inserted null character.

Fixes: 6b8f1ca558 ("USB: ssu100: set tty_flags in ssu100_process_packet")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2014-11-18 11:25:21 +01:00 committed by Greg Kroah-Hartman
parent 8743a13960
commit 20bec8eb8d
1 changed files with 3 additions and 8 deletions
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11
drivers/usb/serial/ssu100.c
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@ -495,10 +495,9 @@ static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr,
if (*tty_flag == TTY_NORMAL)
*tty_flag = TTY_FRAME;
}
if (lsr & UART_LSR_OE){
if (lsr & UART_LSR_OE) {
port->icount.overrun++;
if (*tty_flag == TTY_NORMAL)
*tty_flag = TTY_OVERRUN;
tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
}
}
@ -516,12 +515,8 @@ static void ssu100_process_read_urb(struct urb *urb)
if ((len >= 4) &&
(packet[0] == 0x1b) && (packet[1] == 0x1b) &&
((packet[2] == 0x00) || (packet[2] == 0x01))) {
if (packet[2] == 0x00) {
if (packet[2] == 0x00)
ssu100_update_lsr(port, packet[3], &flag);
if (flag == TTY_OVERRUN)
tty_insert_flip_char(&port->port, 0,
TTY_OVERRUN);
}
if (packet[2] == 0x01)
ssu100_update_msr(port, packet[3]);