linux-kernel - [PATCH 4/4] ftd_sio usb: implement sysrq handling on break

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Date:	Mon, 11 May 2009 15:24:10 -0500
From:	Jason Wessel <jason.wessel@...driver.com>
To:	greg@...ah.com
Cc:	stern@...land.harvard.edu, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Jason Wessel <jason.wessel@...driver.com>
Subject: [PATCH 4/4] ftd_sio usb: implement sysrq handling on break

Change driver to make use of the new functions in
include/linux/usb/serial.h so as to allow the driver to handle the
sysrq when the .config has CONFIG_USB_SERIAL_SYSRQ=y.

Signed-off-by: Jason Wessel <jason.wessel@...driver.com>
---
 drivers/usb/serial/ftdi_sio.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c
index 3a1b84d..a93b76a 100644
--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1991,6 +1991,7 @@ static void ftdi_process_read(struct work_struct *work)
 		if (data[packet_offset+1] & FTDI_RS_BI) {
 			error_flag = TTY_BREAK;
 			dbg("BREAK received");
+			usb_serial_handle_break(port);
 		}
 		if (data[packet_offset+1] & FTDI_RS_PE) {
 			error_flag = TTY_PARITY;
@@ -2005,8 +2006,11 @@ static void ftdi_process_read(struct work_struct *work)
 				/* Note that the error flag is duplicated for
 				   every character received since we don't know
 				   which character it applied to */
-				tty_insert_flip_char(tty,
-					data[packet_offset + i], error_flag);
+				if (!usb_serial_handle_sysrq_char(port,
+						data[packet_offset + i]))
+					tty_insert_flip_char(tty,
+						data[packet_offset + i],
+						error_flag);
 			}
 			need_flip = 1;
 		}
-- 
1.6.3.rc0.1.gf800

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