[PATCH RFC v2 0/6] staging: comedi: fix user/kernel space access of cmd->chanlist

[Dan Carpenter]

This introduces some new Sparse warnings in the compat code.

   CHECK   drivers/staging/comedi/comedi_compat32.c
drivers/staging/comedi/comedi_compat32.c:212:16: warning: cast removes address space of expression
drivers/staging/comedi/comedi_compat32.c:212:16: warning: cast removes address space of expression
drivers/staging/comedi/comedi_compat32.c:212:16: warning: cast removes address space of expression
drivers/staging/comedi/comedi_compat32.c:212:16: warning: cast removes address space of expression
   CC [M]  drivers/staging/comedi/comedi_compat32.o

   210          err |= __put_user(temp.uint, &cmd->stop_arg);
   211          err |= __get_user(temp.uptr, &cmd32->chanlist);
   212          err |= __put_user(compat_ptr(temp.uptr), &cmd->chanlist);
   213          err |= __get_user(temp.uint, &cmd32->chanlist_len);
   214          err |= __put_user(temp.uint, &cmd->chanlist_len);
   215          err |= __get_user(temp.uptr, &cmd32->data);
   216          err |= __put_user(compat_ptr(temp.uptr), &cmd->data);
   217          err |= __get_user(temp.uint, &cmd32->data_len);

I'm not sure how to cast away the warnings...

regards,
dan carpenter