• Tejun Heo's avatar
    libata: implement HORKAGE_1_5_GBPS and apply it to WD My Book · 9062712f
    Tejun Heo authored
    3Gbps is often much more prone to transmission failures.  It's usually
    okay to let EH handle speed down after transmission failures but some
    WD My Book drives completely shutdown after certain transmission
    failures and after it only power cycling can revive them.  Combined
    with the fact that external drives often end up with cable assembly
    which is longer than usual and more likely to have intervening gender,
    this makes these drives very likely to shutdown under certain
    configurations virtually rendering them unusable.
    
    This patch implements HOARKGE_1_5_GBPS and applies it to WD My Book
    such that 1.5Gbps is forced once the device is identified.
    
    Please take a look at the following bz for related reports.
    
      http://bugzilla.kernel.org/show_bug.cgi?id=9913Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
    9062712f
libata-core.c 171 KB