From: Bill Pemberton <wfp5p@xxxxxxxxxxxx>
flag was never set in ssu100_process_packet. Add logic to set it
before calling tty_insert_flip_*
Signed-off-by: Bill Pemberton <wfp5p@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
drivers/usb/serial/ssu100.c | 38 +++++++++++++++++++++++++++++---------
1 files changed, 29 insertions(+), 9 deletions(-)
diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c
index 55e9672..660c31f 100644
--- a/drivers/usb/serial/ssu100.c
+++ b/drivers/usb/serial/ssu100.c
@@ -602,7 +602,8 @@ static void ssu100_update_msr(struct usb_serial_port *port, u8 msr)
}
}
-static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr)
+static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr,
+ char *tty_flag)
{
struct ssu100_port_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
@@ -611,16 +612,32 @@ static void ssu100_update_lsr(struct usb_serial_port *port, u8 lsr)
priv->shadowLSR = lsr;
spin_unlock_irqrestore(&priv->status_lock, flags);
+ *tty_flag = TTY_NORMAL;
if (lsr & UART_LSR_BRK_ERROR_BITS) {
- if (lsr & UART_LSR_BI)
+ /* we always want to update icount, but we only want to
+ * update tty_flag for one case */
+ if (lsr & UART_LSR_BI) {
priv->icount.brk++;
- if (lsr & UART_LSR_FE)
- priv->icount.frame++;
- if (lsr & UART_LSR_PE)
+ *tty_flag = TTY_BREAK;
+ usb_serial_handle_break(port);
+ }
+ if (lsr & UART_LSR_PE) {
priv->icount.parity++;
- if (lsr & UART_LSR_OE)
+ if (*tty_flag == TTY_NORMAL)
+ *tty_flag = TTY_PARITY;
+ }
+ if (lsr & UART_LSR_FE) {
+ priv->icount.frame++;
+ if (*tty_flag == TTY_NORMAL)
+ *tty_flag = TTY_FRAME;
+ }
+ if (lsr & UART_LSR_OE){
priv->icount.overrun++;
+ if (*tty_flag == TTY_NORMAL)
+ *tty_flag = TTY_OVERRUN;
+ }
}
+
}
static int ssu100_process_packet(struct tty_struct *tty,
@@ -629,7 +646,7 @@ static int ssu100_process_packet(struct tty_struct *tty,
char *packet, int len)
{
int i;
- char flag;
+ char flag = TTY_NORMAL;
char *ch;
dbg("%s - port %d", __func__, port->number);
@@ -637,8 +654,11 @@ static int ssu100_process_packet(struct tty_struct *tty,
if ((len >= 4) &&
(packet[0] == 0x1b) && (packet[1] == 0x1b) &&
((packet[2] == 0x00) || (packet[2] == 0x01))) {
- if (packet[2] == 0x00)
- ssu100_update_lsr(port, packet[3]);
+ if (packet[2] == 0x00) {
+ ssu100_update_lsr(port, packet[3], &flag);
+ if (flag == TTY_OVERRUN)
+ tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ }
if (packet[2] == 0x01)
ssu100_update_msr(port, packet[3]);
--
1.7.2
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