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authorJames Bottomley <James.Bottomley@steeleye.com>2007-07-20 11:10:05 -0500
committerJames Bottomley <jejb@mulgrave.localdomain>2007-07-20 12:29:07 -0500
commitb6aff66953a29e40e0683be9b39c369ade143a5b (patch)
treecf46848d871cc9a7e8ca9ab662aae313b23467f2 /drivers/scsi/scsi_transport_sas.c
parente7cbff13ec1f236a3f8341c503a2e1bd0cf692e5 (diff)
[SCSI] scsi_transport_sas: add destructor for bsg
There's currently no destructor for the bsg components. If you insert and remove the module, you see the bsg devices building up and up. This patch adds the destructor in the correct place in the transport class so that the bsg and request queue are removed just before the device destruction. Acked-by: FUJITA Tomonori <tomof@acm.org> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_transport_sas.c')
-rw-r--r--drivers/scsi/scsi_transport_sas.c36
1 files changed, 35 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index 2871fd05fcf..573f588154d 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -42,6 +42,7 @@
struct sas_host_attrs {
struct list_head rphy_list;
struct mutex lock;
+ struct request_queue *q;
u32 next_target_id;
u32 next_expander_id;
int next_port_id;
@@ -215,6 +216,11 @@ static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy,
}
if (rphy)
+ rphy->q = q;
+ else
+ to_sas_host_attrs(shost)->q = q;
+
+ if (rphy)
q->queuedata = rphy;
else
q->queuedata = shost;
@@ -224,6 +230,22 @@ static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy,
return 0;
}
+static void sas_bsg_remove(struct Scsi_Host *shost, struct sas_rphy *rphy)
+{
+ struct request_queue *q;
+
+ if (rphy)
+ q = rphy->q;
+ else
+ q = to_sas_host_attrs(shost)->q;
+
+ if (!q)
+ return;
+
+ bsg_unregister_queue(q);
+ blk_cleanup_queue(q);
+}
+
/*
* SAS host attributes
*/
@@ -249,8 +271,18 @@ static int sas_host_setup(struct transport_container *tc, struct device *dev,
return 0;
}
+static int sas_host_remove(struct transport_container *tc, struct device *dev,
+ struct class_device *cdev)
+{
+ struct Scsi_Host *shost = dev_to_shost(dev);
+
+ sas_bsg_remove(shost, NULL);
+
+ return 0;
+}
+
static DECLARE_TRANSPORT_CLASS(sas_host_class,
- "sas_host", sas_host_setup, NULL, NULL);
+ "sas_host", sas_host_setup, sas_host_remove, NULL);
static int sas_host_match(struct attribute_container *cont,
struct device *dev)
@@ -1414,6 +1446,8 @@ void sas_rphy_free(struct sas_rphy *rphy)
list_del(&rphy->list);
mutex_unlock(&sas_host->lock);
+ sas_bsg_remove(shost, rphy);
+
transport_destroy_device(dev);
put_device(dev);