>> I did not understand the first line of both macro. Will it not create >> the NULL pointer dereference problem? I know it works and read some >> article but it did not explain this part, so can anyone explain why >> the NULL pointer error is not coming. Am I missing something? >> Any C language specification of such example. There is also some interesting reply (See the reply to thread from Laurent) at http://www.spinics.net/lists/linux-usb-devel/msg11766.html -- Thanks - Manish _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies