From: Dan Williams <dan.j.williams@intel.com>
Date: Thu, 16 Jun 2011 18:26:12 +0000 (-0700)
Subject: isci: kill isci_remote_device_change_state()
X-Git-Tag: v3.0-rc6~1^2~1^2~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2088267514b39af1a94409168101527769a911c;p=pandora-kernel.git

isci: kill isci_remote_device_change_state()

Now that "stopping/stopped" are one in the same and signalled by a NULL device
pointer the rest of the device status infrastructure can be removed (->status
and ->state_lock).  The "not ready for i/o state" is replaced with a state
flag, and is evaluated under scic_lock so that we don't see transients from
taking the device reference to submitting the i/o.

This also fixes a potential leakage of can_queue slots in the rare case that
SAS_TASK_ABORTED is set at submission.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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