E9 linux qt下 usb键盘事件号变动导致 usb键盘不能用

~ # cat /proc/bus/input/devices
I: Bus=0019 Vendor=0001 Product=0001 Version=0100
N: Name="gpio-keys"
P: Phys=gpio-keys/input0
S: Sysfs=/devices/platform/gpio-keys/input/input0
U: Uniq=
H: Handlers=event0
B: PROP=0
B: EV=3
B: KEY=100600 0 0 0

I: Bus=0019 Vendor=abce Product=ecba Version=0100
N: Name="tq_hs0038"
P: Phys=tq_hs0038/input1
S: Sysfs=/devices/virtual/input/input1
U: Uniq=
H: Handlers=event1
B: PROP=0
B: EV=3
B: KEY=80 100100 68 40000800 1c1ec0 0 2000800 1000dffc

I: Bus=0003 Vendor=09da Product=0260 Version=0110
N: Name="  USB Keyboard"
P: Phys=usb-fsl-ehci.1-1.2/input0
S: Sysfs=/devices/platform/fsl-ehci.1/usb2/2-1/2-1.2/2-1.2:1.0/input/input2
U: Uniq=
H: Handlers=sysrq event2
B: PROP=0
B: EV=120013
B: KEY=10000 7 ff800000 7ff febeffdf f3cfffff ffffffff fffffffe
B: MSC=10
B: LED=7

I: Bus=0003 Vendor=09da Product=0260 Version=0110
N: Name="  USB Keyboard"
P: Phys=usb-fsl-ehci.1-1.2/input1
S: Sysfs=/devices/platform/fsl-ehci.1/usb2/2-1/2-1.2/2-1.2:1.1/input/input3
U: Uniq=
H: Handlers=event3
B: PROP=0
B: EV=13
B: KEY=2000000 39fa d941d001 1e0000 0 0 0
B: MSC=10

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="wm8960-audio Mic Jack"
P: Phys=ALSA
S: Sysfs=/devices/platform/soc-audio.5/sound/card0/input4
U: Uniq=
H: Handlers=event4
B: PROP=0
B: EV=21
B: SW=10

I: Bus=0000 Vendor=0000 Product=0000 Version=0000
N: Name="wm8960-audio Headphone Jack"
P: Phys=ALSA
S: Sysfs=/devices/platform/soc-audio.5/sound/card0/input5
U: Uniq=
H: Handlers=event5
B: PROP=0
B: EV=21
B: SW=4

/bin/pda


export set QWS_KEYBOARD="TTY:/dev/tty1"

http://www.armbbs.net/forum.php? ... &extra=page%3D1
请参考上面链接的网页，其中有提到E9 usb键盘的实现方法。