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Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

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* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  libata: fix NCQ devices behind port multipliers
  scsi: make sure that scsi_init_shared_tag_map() doesn't overwrite existing map
This commit is contained in:
Linus Torvalds
2008-10-27 11:41:51 -07:00
parent b70a6b27ed 43a49cbdf3
commit 49fdf6785f
2 changed files with 21 additions and 2 deletions
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drivers/ata/libata-scsi.c
+9
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@@ -1107,6 +1107,15 @@ static int ata_scsi_dev_config(struct scsi_device *sdev,
depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id));
depth = min(ATA_MAX_QUEUE - 1, depth);
/*
* If this device is behind a port multiplier, we have
* to share the tag map between all devices on that PMP.
* Set up the shared tag map here and we get automatic.
*/
if (dev->link->ap->pmp_link)
scsi_init_shared_tag_map(sdev->host, ATA_MAX_QUEUE - 1);
scsi_set_tag_type(sdev, MSG_SIMPLE_TAG);
scsi_activate_tcq(sdev, depth);
}