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authorDan Williams <dan.j.williams@intel.com>2012-01-11 02:39:13 +0400
committerJames Bottomley <JBottomley@Parallels.com>2012-03-01 01:20:55 +0400
commit7d05919aad080074453de880822fe5805875645f (patch)
treedf78c12a7bfc9acaefd91d2a8852dca17c178790
parent45c73b65194173e77030d5b95abe5b63a402d268 (diff)
downloadlinux-7d05919aad080074453de880822fe5805875645f.tar.xz
[SCSI] libsas: mark all domain devices gone if root port disappears
If the top level expander is hot removed, mark all child devices as gone before unregistration to short circuit futile recovery. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
-rw-r--r--drivers/scsi/libsas/sas_discover.c8
-rw-r--r--drivers/scsi/libsas/sas_port.c4
-rw-r--r--include/scsi/libsas.h2
3 files changed, 8 insertions, 6 deletions
diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c
index 789b50861bb9..b91866a8233b 100644
--- a/drivers/scsi/libsas/sas_discover.c
+++ b/drivers/scsi/libsas/sas_discover.c
@@ -299,12 +299,16 @@ void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *dev)
}
}
-void sas_unregister_domain_devices(struct asd_sas_port *port)
+void sas_unregister_domain_devices(struct asd_sas_port *port, int gone)
{
struct domain_device *dev, *n;
- list_for_each_entry_safe_reverse(dev, n, &port->dev_list, dev_list_node)
+ list_for_each_entry_safe_reverse(dev, n, &port->dev_list, dev_list_node) {
+ if (gone)
+ set_bit(SAS_DEV_GONE, &dev->state);
sas_unregister_dev(port, dev);
+ }
+
list_for_each_entry_safe(dev, n, &port->disco_list, disco_list_node)
sas_unregister_dev(port, dev);
diff --git a/drivers/scsi/libsas/sas_port.c b/drivers/scsi/libsas/sas_port.c
index 31adcd1b4191..59ee8a0a6ea9 100644
--- a/drivers/scsi/libsas/sas_port.c
+++ b/drivers/scsi/libsas/sas_port.c
@@ -167,9 +167,7 @@ void sas_deform_port(struct asd_sas_phy *phy, int gone)
dev->pathways--;
if (port->num_phys == 1) {
- if (dev && gone)
- set_bit(SAS_DEV_GONE, &dev->state);
- sas_unregister_domain_devices(port);
+ sas_unregister_domain_devices(port, gone);
sas_port_delete(port->port);
port->port = NULL;
} else {
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 55bab8633807..4a42be34fad0 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -664,7 +664,7 @@ void sas_init_ex_attr(void);
int sas_ex_revalidate_domain(struct domain_device *);
-void sas_unregister_domain_devices(struct asd_sas_port *port);
+void sas_unregister_domain_devices(struct asd_sas_port *port, int gone);
void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *);
int sas_discover_event(struct asd_sas_port *, enum discover_event ev);