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authorJames Bottomley <James.Bottomley@steeleye.com>2007-07-20 18:10:05 +0200
committerJames Bottomley <jejb@mulgrave.localdomain>2007-07-20 19:29:07 +0200
commitb6aff66953a29e40e0683be9b39c369ade143a5b (patch)
treecf46848d871cc9a7e8ca9ab662aae313b23467f2
parent[SCSI] iscsi_tcp: buggered kmalloc() (diff)
downloadlinux-b6aff66953a29e40e0683be9b39c369ade143a5b.tar.xz
linux-b6aff66953a29e40e0683be9b39c369ade143a5b.zip
[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>
-rw-r--r--drivers/scsi/scsi_transport_sas.c36
-rw-r--r--include/scsi/scsi_transport_sas.h2
2 files changed, 37 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index 2871fd05fcf7..573f588154d0 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);
diff --git a/include/scsi/scsi_transport_sas.h b/include/scsi/scsi_transport_sas.h
index af304fb9d979..abdfd2e27dd7 100644
--- a/include/scsi/scsi_transport_sas.h
+++ b/include/scsi/scsi_transport_sas.h
@@ -91,10 +91,12 @@ struct sas_phy {
#define phy_to_shost(phy) \
dev_to_shost((phy)->dev.parent)
+struct request_queue;
struct sas_rphy {
struct device dev;
struct sas_identify identify;
struct list_head list;
+ struct request_queue *q;
u32 scsi_target_id;
};