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From: Ian Dowse <iedowse@FreeBSD.org>
Date: Sun, 4 Jun 2006 14:42:38 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
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Cc: 
Subject: cvs commit: src/sys/dev/usb if_axe.c if_axereg.h
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iedowse     2006-06-04 14:42:38 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/usb          if_axe.c if_axereg.h 
  Log:
  Add a sleep lock that protects access to sequences of blocking
  axe_cmd() calls. Without this the device can get confused if multiple
  threads attempt these operations concurrently. The problem was
  easily reproducible by running "ifconfig axe0" in a loop because
  eventually it would conflict with axe_tick_task().
  
  A similar approach is probably required in all USB ethernet drivers.
  
  Revision  Changes    Path
  1.38      +39 -3     src/sys/dev/usb/if_axe.c
  1.10      +4 -0      src/sys/dev/usb/if_axereg.h