Hello Experts, while calling device_register for a char device , I happened to get on this error, my call trace shows -

Call Trace:
[<d00a44ca>] driver_sysfs_add+0x2a/0x40
[<d00a46a1>] device_bind_driver+0x9/0x18
[<d00a46d0>] device_attach+0x20/0x4c
[<d00a3ef4>] bus_attach_device+0x18/0x3c
[<d00a3422>] device_add+0x2b6/0x378
[<d00a34f8>] device_register+0x14/0x18
[<c00415d9>] register_lcd_dev+0x45/0x6c [anand_lcd_drv]
[<c0041628>] open_lcd+0x28/0x64 [anand_lcd_drv]
[<d0046450>] chrdev_open+0xd8/0xe8
[<d00437fd>] __dentry_open+0xc9/0x198
[<d0043940>] nameidata_to_filp+0x20/0x34
[<d004ae6c>] do_filp_open+0x288/0x4e8
[<d00436c1>] do_sys_open+0x35/0x64
[<d004371a>] sys_open+0x12/0x18
[<d00046cc>] system_call+0x40/0x50
[<d0003e09>] _user_exception+0x10b/0x12c

Pls suggest, what do you think may be the problem !

can you show the code too that is causing the problem and also more of the logs.