fl2440 2.6.35移植触摸屏驱动错误

bootload出错提示如下：

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WARNING: at lib/kref.c:34 kref_get+0x1c/0x40()

Modules linked in:

[<c0031364>] (unwind_backtrace+0x0/0xf0) from [<c004aee4>] (warn_slowpath_common+0x48/0x60)

[<c004aee4>] (warn_slowpath_common+0x48/0x60) from [<c004af14>] (warn_slowpath_null+0x18/0x1c)

[<c004af14>] (warn_slowpath_null+0x18/0x1c) from [<c0172e14>] (kref_get+0x1c/0x40)

[<c0172e14>] (kref_get+0x1c/0x40) from [<c0171f44>] (kobject_get+0x10/0x18)

[<c0171f44>] (kobject_get+0x10/0x18) from [<c01b8cbc>] (get_device+0x14/0x1c)

[<c01b8cbc>] (get_device+0x14/0x1c) from [<c01b946c>] (device_add+0x74/0x580)

[<c01b946c>] (device_add+0x74/0x580) from [<c01bcc54>] (platform_device_add+0x104/0x15c)

[<c01bcc54>] (platform_device_add+0x104/0x15c) from [<c01bcf74>] (platform_add_devices+0x1c/0x60)

[<c01bcf74>] (platform_add_devices+0x1c/0x60) from [<c000d84c>] (smdk2440_machine_init+0x2c/0x38)

[<c000d84c>] (smdk2440_machine_init+0x2c/0x38) from [<c000b4d0>] (customize_machine+0x18/0x24)

[<c000b4d0>] (customize_machine+0x18/0x24) from [<c002b35c>] (do_one_initcall+0x5c/0x1bc)

[<c002b35c>] (do_one_initcall+0x5c/0x1bc) from [<c000857c>] (kernel_init+0xa0/0x14c)

[<c000857c>] (kernel_init+0xa0/0x14c) from [<c002ce2c>] (kernel_thread_exit+0x0/0x8)

---[ end trace 1b75b31a2719ed1c ]---

Unable to handle kernel NULL pointer dereference at virtual address 00000021

pgd = c0004000

[00000021] *pgd=00000000

Internal error: Oops: 5 [#1]

last sysfs file:

Modules linked in:

CPU: 0 Tainted: G W (2.6.35.4 #7)

PC is at sysfs_create_dir+0x24/0xe0

LR is at kobject_add_internal+0xb8/0x1bc

pc : [<c00e2b10>] lr : [<c0172060>] psr: a0000013

sp : c3c19ee8 ip : c3c19f34 fp : 00000000

r10: 00000000 r9 : 00000000 r8 : 00000000

r7 : 00000000 r6 : 00000000 r5 : c0426908 r4 : c0426908

r3 : c0426e18 r2 : c0427254 r1 : c042690c r0 : c0426908

Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel

Control: c000717f Table: 30004000 DAC: 00000017

Process swapper (pid: 1, stack limit = 0xc3c18270)

Stack: (0xc3c19ee8 to 0xc3c1a000)

9ee0: c0426908 c042690c c0427254 c3c44ee0 c0426900 c0426908

9f00: c0426e18 c0172060 c0426900 c0426908 c0426e10 00000000 00000000 c01722dc

9f20: c0426908 c3c19f34 00000000 c01b94c4 00000000 c0426e18 00000021 00000000

9f40: 00000000 c0172208 c04268f8 00000008 00000000 c04268f8 00000002 00000038

9f60: 00000009 00000000 00000000 00000000 00000000 c01bcc54 c0025a84 00000008

9f80: 00000000 00000009 00000000 c01bcf74 c0025a44 c00235b4 00000000 00000013

9fa0: 00000000 c000d84c c000b4b8 c000b4d0 c000b4b8 c002b35c c000b4b8 c3c34718

9fc0: c044e3a0 c044e3a0 c0023120 c00235b4 c002ce2c 00000013 00000000 00000000

9fe0: 00000000 c000857c 00000000 c00084dc c002ce2c c002ce2c fc2effef b6a2fbec

[<c00e2b10>] (sysfs_create_dir+0x24/0xe0) from [<c0172060>] (kobject_add_internal+0xb8/0x1bc)

[<c0172060>] (kobject_add_internal+0xb8/0x1bc) from [<c01722dc>] (kobject_add+0x4c/0x5c)

[<c01722dc>] (kobject_add+0x4c/0x5c) from [<c01b94c4>] (device_add+0xcc/0x580)

[<c01b94c4>] (device_add+0xcc/0x580) from [<c01bcc54>] (platform_device_add+0x104/0x15c)

[<c01bcc54>] (platform_device_add+0x104/0x15c) from [<c01bcf74>] (platform_add_devices+0x1c/0x60)

[<c01bcf74>] (platform_add_devices+0x1c/0x60) from [<c000d84c>] (smdk2440_machine_init+0x2c/0x38)

[<c000d84c>] (smdk2440_machine_init+0x2c/0x38) from [<c000b4d0>] (customize_machine+0x18/0x24)

[<c000b4d0>] (customize_machine+0x18/0x24) from [<c002b35c>] (do_one_initcall+0x5c/0x1bc)

[<c002b35c>] (do_one_initcall+0x5c/0x1bc) from [<c000857c>] (kernel_init+0xa0/0x14c)

[<c000857c>] (kernel_init+0xa0/0x14c) from [<c002ce2c>] (kernel_thread_exit+0x0/0x8)

Code: e594300c e3530000 059f60b0 15936018 (e5d65021)

---[ end trace 1b75b31a2719ed1d ]---

Kernel panic - not syncing: Attempted to kill init!

[<c0031364>] (unwind_backtrace+0x0/0xf0) from [<c0317994>] (panic+0x54/0xd8)

[<c0317994>] (panic+0x54/0xd8) from [<c004de5c>] (do_exit+0x64/0x584)

[<c004de5c>] (do_exit+0x64/0x584) from [<c002f788>] (die+0x198/0x1c4)

[<c002f788>] (die+0x198/0x1c4) from [<c0032060>] (__do_kernel_fault+0x64/0x84)

[<c0032060>] (__do_kernel_fault+0x64/0x84) from [<c0032230>] (do_page_fault+0x1b0/0x1c4)

[<c0032230>] (do_page_fault+0x1b0/0x1c4) from [<c002b29c>] (do_DataAbort+0x34/0x94)

[<c002b29c>] (do_DataAbort+0x34/0x94) from [<c002b9e0>] (__dabt_svc+0x40/0x60)

Exception stack(0xc3c19ea0 to 0xc3c19ee8)

9ea0: c0426908 c042690c c0427254 c0426e18 c0426908 c0426908 00000000 00000000

9ec0: 00000000 00000000 00000000 00000000 c3c19f34 c3c19ee8 c0172060 c00e2b10

9ee0: a0000013 ffffffff

[<c002b9e0>] (__dabt_svc+0x40/0x60) from [<c00e2b10>] (sysfs_create_dir+0x24/0xe0)