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[libata] remove SCSI host lock and serial number usage from ata_scsi_queuecmd
authorJeff Garzik <jeff@garzik.org>
Wed, 17 Nov 2010 17:03:58 +0000 (12:03 -0500)
committerJeff Garzik <jgarzik@redhat.com>
Wed, 17 Nov 2010 17:03:58 +0000 (12:03 -0500)
cmd->serial_number is never tested in any path we reach; therefore we may
remove the call to scsi_cmd_get_serial() inside DEF_SCSI_QCMD, the SCSI
host_lock acquisition surrounding it, and our own SCSI host_lock
unlock+relock cycle.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

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