[PATCH 2/4] xpad.c Check for data length and ignore packet if it is smaller
From: Jan Kratochvil <hidden>
Date: 2007-06-03 14:01:36
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, the rest · Maintainers:
Dmitry Torokhov, Linus Torvalds
xpad360_process_packet will ignore packets smaller then 20 bytes. For example notification about headset connection is only 3 bytes long. Signed-off-by: Jan Kratochvil <redacted> --- drivers/input/joystick/xpad.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index 56d5e3e..15f9877 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c@@ -268,12 +268,17 @@ static void xpad_process_packet(struct u * * The used report descriptor was taken from: * http://www.free60.org/wiki/Gamepad + * Packet length for valid data is 20 bytes. */ static void xpad360_process_packet(struct usb_xpad *xpad, u16 cmd, unsigned char *data) { struct input_dev *dev = xpad->dev; + /* valid data */ + if (data[1] < 20) + return; + /* digital pad */ if (xpad->dpad_mapping == MAP_DPAD_TO_AXES) { input_report_abs(dev, ABS_HAT0X, !!(data[2] & 0x01) - !!((data[2] & 0x08) >> 3));
--
1.4.3.4