From 7d05919aad080074453de880822fe5805875645f Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 10 Jan 2012 14:39:13 -0800 Subject: [PATCH] [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 Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_discover.c | 8 ++++++-- drivers/scsi/libsas/sas_port.c | 4 +--- include/scsi/libsas.h | 2 +- 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); -- 2.20.1