From: Aaro Koskinen <Aaro.Koskinen@nokia.com>
Date: Tue, 14 Apr 2009 20:47:00 +0000 (-0500)
Subject: [SCSI] sym53c8xx_2: slave_alloc/destroy safety (2.6.27.5)
X-Git-Tag: v2.6.31-rc1~365^2~132
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fa8584566cc9cdaf067dbc12132792887a521da9;p=pandora-kernel.git

[SCSI] sym53c8xx_2: slave_alloc/destroy safety (2.6.27.5)

Make the sym53c8xx_2 driver slave_alloc/destroy less unsafe. References
to the destroyed LCB are cleared from the target structure (instead of
leaving a dangling pointer), and when the last LCB for the target is
destroyed the reference to the upper layer target data is cleared. The
host lock is used to prevent a race with the interrupt handler. Also
user commands are prevented for targets with all LCBs destroyed.

Signed-off-by: Aaro Koskinen <Aaro.Koskinen@nokia.com>
Tested-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
---

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