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| author | Andy Whitcroft <apw@canonical.com> | 2012-05-04 22:15:10 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-17 11:21:29 -0700 |
| commit | 54a40b2cf40d655dbbdcc017288be75b1ae1b701 (patch) | |
| tree | c5581223aa8ecc919f5d3df9d8904b1e8c7d4144 | |
| parent | 9abcb7517f13aa54152bee6370538b8f56893349 (diff) | |
| download | linux-3.10-54a40b2cf40d655dbbdcc017288be75b1ae1b701.tar.gz linux-3.10-54a40b2cf40d655dbbdcc017288be75b1ae1b701.tar.bz2 linux-3.10-54a40b2cf40d655dbbdcc017288be75b1ae1b701.zip | |
libata: add a host flag to ignore detected ATA devices
commit db63a4c8115a0bb904496e1cdd3e7488e68b0d06 upstream.
Where devices are visible via more than one host we sometimes wish to
indicate that cirtain devices should be ignored on a specific host. Add a
host flag indicating that this host wishes to ignore ATA specific devices.
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Cc: Victor Miasnikov <vvm@tut.by>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/ata/libata-core.c | 6 | ||||
| -rw-r--r-- | include/linux/libata.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 23763a1ec57..d31ee557b39 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -1973,6 +1973,12 @@ retry: if (class == ATA_DEV_ATA) { if (!ata_id_is_ata(id) && !ata_id_is_cfa(id)) goto err_out; + if (ap->host->flags & ATA_HOST_IGNORE_ATA && + ata_id_is_ata(id)) { + ata_dev_dbg(dev, + "host indicates ignore ATA devices, ignored\n"); + return -ENOENT; + } } else { if (ata_id_is_ata(id)) goto err_out; diff --git a/include/linux/libata.h b/include/linux/libata.h index e926df7b54c..6e887c742a2 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -247,6 +247,7 @@ enum { ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host only */ ATA_HOST_STARTED = (1 << 1), /* Host started */ ATA_HOST_PARALLEL_SCAN = (1 << 2), /* Ports on this host can be scanned in parallel */ + ATA_HOST_IGNORE_ATA = (1 << 3), /* Ignore ATA devices on this host. */ /* bits 24:31 of host->flags are reserved for LLD specific flags */ |