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From: John Baldwin <jhb@FreeBSD.org>
Date: Thu, 22 Oct 2009 14:53:44 +0000 (UTC)
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Subject: cvs commit: src/sys/kern subr_bus.c
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jhb         2009-10-22 14:53:44 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             subr_bus.c 
  Log:
  SVN rev 198367 on 2009-10-22 14:53:44Z by jhb
  
  Set the devclass_t pointer specified in the DRIVER_MODULE() macro
  sooner so it is always valid when a driver's identify routine is
  called.  Previously, new-bus would attempt to create the devclass for
  a newly loaded driver in two separate places, once in
  devclass_add_driver(), and again after devclass_add_driver() returned
  in driver_module_handler().  Only the second lookup attempted to set a
  device class' parent and set the devclass_t pointer specified in the
  DRIVER_MODULE() macro.  However, by the time it was executed, the
  driver was already added to existing instances of the parent driver at
  which point in time the new driver's identify routine would have been
  invoked.  The fix is to merge the two attempts and only create the
  devclass once in devclass_add_driver() including setting the
  devclass_t pointer passed to DRIVER_MODULE() before the driver is
  added to any existing bus devices.
  
  Reported by:    avg
  Reviewed by:    imp
  MFC after:      2 weeks
  
  Revision  Changes    Path
  1.233     +14 -24    src/sys/kern/subr_bus.c