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[SCSI] libsas: mark all domain devices gone if root port disappears

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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>
This commit is contained in:
Dan Williams 2012-01-10 14:39:13 -08:00 committed by James Bottomley
parent 45c73b6519
commit 7d05919aad
3 changed files with 8 additions and 6 deletions
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8
drivers/scsi/libsas/sas_discover.c
View File

@ -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);

4
drivers/scsi/libsas/sas_port.c
View File

@ -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 {

2
include/scsi/libsas.h
View File

@ -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);