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From: Tejun Heo <htejun@gmail.com>
To: Eric.Moore@lsil.com, James Bottomley <James.Bottomley@SteelEye.com>
Cc: linux-scsi@vger.kernel.org
Subject: Question about scsi_device_online() usage in mptscsih
Date: Sat, 2 Apr 2005 14:35:57 +0900	[thread overview]
Message-ID: <20050402053557.GA22422@htj.dyndns.org> (raw)

 Hello, Eric.
 Hello, James.

 I've been working on new SCSI state model and was checking on
scsi_device_online() users.  As the state model is going to change, I
need to audit device state usages in lldd's and I'm having difficult
time understanding why scsi_device_online() is used in mptscsih.

 In mptscsih.c, mptscsih_flush_running_cmds() uses
scsi_device_online() to determine whether or not dma-unmap data area
of active commands.  This was added in the changeset 1.1371.776.1 by
Eric Moore with the comment "MPT Fusion add back FC909 support".  Can
you please explain me why and how scsi_device_online() condition is
used here?

 Thanks a lot. :-)

-- 
tejun


             reply	other threads:[~2005-04-02  5:36 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-02  5:35 Tejun Heo [this message]
2005-04-14 18:54 ` Question about scsi_device_online() usage in mptscsih Christoph Hellwig
  -- strict thread matches above, loose matches on Subject: below --
2005-04-14 20:28 Moore, Eric Dean
2005-04-15 10:13 ` Masao Fukuchi
2005-04-15 14:30   ` James Bottomley
2005-04-15 16:11 Moore, Eric Dean
2005-04-15 16:41 ` James Bottomley

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