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Commit 430eb0d2 authored by Jason Wessel's avatar Jason Wessel Committed by Greg Kroah-Hartman
Browse files

USB: pl2303 usb_serial: implement sysrq handling on break 



Add callbacks to process the sysrq when using a pl2303 usb device as a
console.

Signed-off-by: default avatarJason Wessel <jason.wessel@windriver.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 830d1b18

drivers/usb/serial/pl2303.c

+4 −1
Original line number Diff line number Diff line
@@ -927,6 +927,8 @@ 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);

}
@@ -1037,6 +1039,7 @@ 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)

			if (!usb_serial_handle_sysrq_char(port, data[i]))

				tty_insert_flip_char(tty, data[i], tty_flag);

		tty_flip_buffer_push(tty);

	}