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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Fri, 16 May 2008 10:32:52 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: RELENG_6
Cc: 
Subject: cvs commit: src/sys/dev/fdc fdc.c
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kib         2008-05-16 10:32:52 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_6)
    sys/dev/fdc          fdc.c 
  Log:
  MFC rev. 1.320:
  
  The wakeup() line from the rev. 1.319 is wrong and reintroduces
  a panic race on module unload. The wakeup() is internal to
  kproc_exit/kthread_exit. The correct fix is to fix the msleep() in
  detach to sleep on fdc->fdc_thread instead of &fdc->fdc_thread.
  
  MFC rev. 1.319:
  Wakeup the thread doing the fdc_detach() when the fdc worker thread exits [1].
  Write access to the write-protected floppy shall call device_unbusy() to
  pair the device_busy() in the fd_access() [2].
  
  PR:     116537 [1], 116539 [2]
  
  Revision   Changes    Path
  1.307.2.5  +8 -2      src/sys/dev/fdc/fdc.c