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Subject[PATCH 1/2] pl2303 usb_serial: implement sysrq handling on break
Date
Add callbacks to process the sysrq when using a pl2303 usb device as a
console.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
---
drivers/usb/serial/pl2303.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 751a533..c5a8745 100644
--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@@ -946,6 +946,8 @@ static void pl2303_update_line_status(struct usb_serial_port *port,
spin_lock_irqsave(&priv->lock, flags);
priv->line_status = data[status_idx];
spin_unlock_irqrestore(&priv->lock, flags);
+ if (priv->line_status & UART_BREAK_ERROR)
+ usb_serial_handle_break(port);
wake_up_interruptible(&priv->delta_msr_wait);
}

@@ -1056,7 +1058,8 @@ static void pl2303_read_bulk_callback(struct urb *urb)
if (line_status & UART_OVERRUN_ERROR)
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
for (i = 0; i < urb->actual_length; ++i)
- tty_insert_flip_char(tty, data[i], tty_flag);
+ if (!usb_serial_handle_sysrq_char(port, data[i]))
+ tty_insert_flip_char(tty, data[i], tty_flag);
tty_flip_buffer_push(tty);
}
tty_kref_put(tty);
--
1.6.3.1.9.g95405b


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