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authorJames Bottomley <James.Bottomley@steeleye.com>2005-08-14 14:34:06 -0500
committerJames Bottomley <jejb@mulgrave.(none)>2005-08-14 14:42:25 -0500
commit10c1b88987d618f4f89c10e11e574c76de73b5e7 (patch)
tree21b45648425c43f6a392afc0da800524608c7caf
parent3a4f5c60dbe1978580ea03c1aff353d1e63d1638 (diff)
[SCSI] add ability to deny binding to SPI transport class
This patch is necessary if we begin exposing underlying physical disks (which can attach to the SPI transport class) of the hardware RAID cards, since we don't want any SPI parameters binding to the RAID devices. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
-rw-r--r--drivers/scsi/scsi_transport_spi.c11
-rw-r--r--include/scsi/scsi_transport_spi.h1
2 files changed, 11 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c
index e7b9570c818..02134fce217 100644
--- a/drivers/scsi/scsi_transport_spi.c
+++ b/drivers/scsi/scsi_transport_spi.c
@@ -1082,6 +1082,7 @@ static int spi_device_match(struct attribute_container *cont,
{
struct scsi_device *sdev;
struct Scsi_Host *shost;
+ struct spi_internal *i;
if (!scsi_is_sdev_device(dev))
return 0;
@@ -1094,6 +1095,9 @@ static int spi_device_match(struct attribute_container *cont,
/* Note: this class has no device attributes, so it has
* no per-HBA allocation and thus we don't need to distinguish
* the attribute containers for the device */
+ i = to_spi_internal(shost->transportt);
+ if (i->f->deny_binding && i->f->deny_binding(sdev->sdev_target))
+ return 0;
return 1;
}
@@ -1101,6 +1105,7 @@ static int spi_target_match(struct attribute_container *cont,
struct device *dev)
{
struct Scsi_Host *shost;
+ struct scsi_target *starget;
struct spi_internal *i;
if (!scsi_is_target_device(dev))
@@ -1112,7 +1117,11 @@ static int spi_target_match(struct attribute_container *cont,
return 0;
i = to_spi_internal(shost->transportt);
-
+ starget = to_scsi_target(dev);
+
+ if (i->f->deny_binding && i->f->deny_binding(starget))
+ return 0;
+
return &i->t.target_attrs.ac == cont;
}
diff --git a/include/scsi/scsi_transport_spi.h b/include/scsi/scsi_transport_spi.h
index d8ef86006e0..6bdc4afb248 100644
--- a/include/scsi/scsi_transport_spi.h
+++ b/include/scsi/scsi_transport_spi.h
@@ -120,6 +120,7 @@ struct spi_function_template {
void (*set_hold_mcs)(struct scsi_target *, int);
void (*get_signalling)(struct Scsi_Host *);
void (*set_signalling)(struct Scsi_Host *, enum spi_signal_type);
+ int (*deny_binding)(struct scsi_target *);
/* The driver sets these to tell the transport class it
* wants the attributes displayed in sysfs. If the show_ flag
* is not set, the attribute will be private to the transport