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| author |   Tejun Heo <tj@kernel.org> | 2008-10-27 19:59:23 +0900 |
|---|---|---|
| committer |   Jeff Garzik <jgarzik@redhat.com> | 2008-10-27 23:55:12 -0400 |
| commit | 4a9c7b3359889399aacb94019bbdfc9f38d4cff7 (patch) | |
| tree | a791790f02f2a0a5b3ea66c1526ae79f1711dca8 /drivers/ata/libata-eh.c | |
| parent | ahci: Add support for Promise PDC42819 (diff) | |
| download | linux-dev-4a9c7b3359889399aacb94019bbdfc9f38d4cff7.tar.xz linux-dev-4a9c7b3359889399aacb94019bbdfc9f38d4cff7.zip | |
libata: fix device iteration bugs
There were several places where only enabled devices should be
iterated over but device enabledness wasn't checked.
* IDENTIFY data 40 wire check in cable_is_40wire()
* xfer_mode/ncq_enabled saving in ata_scsi_error()
* DUBIOUS_XFER handling in ata_set_mode()
While at it, reformat comments in cable_is_40wire().
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/libata-eh.c')
| -rw-r--r-- | drivers/ata/libata-eh.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 5d687d7cffae..a6a3b1554c45 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -603,6 +603,9 @@ void ata_scsi_error(struct Scsi_Host *host) ata_link_for_each_dev(dev, link) { int devno = dev->devno; + if (!ata_dev_enabled(dev)) + continue; + ehc->saved_xfer_mode[devno] = dev->xfer_mode; if (ata_ncq_enabled(dev)) ehc->saved_ncq_enabled |= 1 << devno; @@ -2787,6 +2790,9 @@ int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) /* if data transfer is verified, clear DUBIOUS_XFER on ering top */ ata_link_for_each_dev(dev, link) { + if (!ata_dev_enabled(dev)) + continue; + if (!(dev->flags & ATA_DFLAG_DUBIOUS_XFER)) { struct ata_ering_entry *ent; @@ -2808,6 +2814,9 @@ int ata_set_mode(struct ata_link *link, struct ata_device **r_failed_dev) u8 saved_xfer_mode = ehc->saved_xfer_mode[dev->devno]; u8 saved_ncq = !!(ehc->saved_ncq_enabled & (1 << dev->devno)); + if (!ata_dev_enabled(dev)) + continue; + if (dev->xfer_mode != saved_xfer_mode || ata_ncq_enabled(dev) != saved_ncq) dev->flags |= ATA_DFLAG_DUBIOUS_XFER; |