[PATCH v4 01/10] libsas: convert dev->gone to flags

Dan Williams
2012-01-17T05:11:07Z

In preparation for adding tracking of another device state "destroy".

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/scsi/libsas/sas_ata.c | 2 +-
drivers/scsi/libsas/sas_expander.c | 6 +++---
drivers/scsi/libsas/sas_port.c | 2 +-
drivers/scsi/libsas/sas_scsi_host.c | 2 +-
include/scsi/libsas.h | 7 +++++--
5 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 81ce39d..2fc5a39 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -184,7 +184,7 @@ static unsigned int sas_ata_qc_issue(struct ata_queued_cmd *qc)
spin_unlock(ap->lock);

/* If the device fell off, no sense in issuing commands */
- if (dev->gone)
+ if (test_bit(SAS_DEV_GONE, &dev->state))
goto out;

task = sas_alloc_task(GFP_ATOMIC);
diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 15d2239..f33d0c9 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -1750,7 +1750,7 @@ static void sas_unregister_ex_tree(struct asd_sas_port *port, struct domain_devi
struct domain_device *child, *n;

list_for_each_entry_safe(child, n, &ex->children, siblings) {
- child->gone = 1;
+ set_bit(SAS_DEV_GONE, &child->state);
if (child->dev_type == EDGE_DEV ||
child->dev_type == FANOUT_DEV)
sas_unregister_ex_tree(port, child);
@@ -1771,7 +1771,7 @@ static void sas_unregister_devs_sas_addr(struct domain_device *parent,
&ex_dev->children, siblings) {
if (SAS_ADDR(child->sas_addr) ==
SAS_ADDR(phy->attached_sas_addr)) {
- child->gone = 1;
+ set_bit(SAS_DEV_GONE, &child->state);
if (child->dev_type == EDGE_DEV ||
child->dev_type == FANOUT_DEV)
sas_unregister_ex_tree(parent->port, child);
@@ -1780,7 +1780,7 @@ static void sas_unregister_devs_sas_addr(struct domain_device *parent,
break;
}
}
- parent->gone = 1;
+ set_bit(SAS_DEV_GONE, &parent->state);
sas_disable_routing(parent, phy->attached_sas_addr);
}
memset(phy->attached_sas_addr, 0, SAS_ADDR_SIZE);
diff --git a/drivers/scsi/libsas/sas_port.c b/drivers/scsi/libsas/sas_port.c
index a47c7a7..d88e55f 100644
--- a/drivers/scsi/libsas/sas_port.c
+++ b/drivers/scsi/libsas/sas_port.c
@@ -171,7 +171,7 @@ void sas_deform_port(struct asd_sas_phy *phy, int gone)

if (port->num_phys == 1) {
if (dev && gone)
- dev->gone = 1;
+ set_bit(SAS_DEV_GONE, &dev->state);
sas_unregister_domain_devices(port);
sas_port_delete(port->port);
port->port = NULL;
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index fd60465..15533a1 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -192,7 +192,7 @@ int sas_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
int res = 0;

/* If the device fell off, no sense in issuing commands */
- if (dev->gone) {
+ if (test_bit(SAS_DEV_GONE, &dev->state)) {
cmd->result = DID_BAD_TARGET << 16;
goto out_done;
}
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 42900fa..d792b13 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -173,7 +173,10 @@ struct sata_device {
struct ata_taskfile tf;
};

-/* ---------- Domain device ---------- */
+enum {
+ SAS_DEV_GONE,
+};
+
struct domain_device {
enum sas_dev_type dev_type;

@@ -205,7 +208,7 @@ struct domain_device {
};

void *lldd_dev;
- int gone;
+ unsigned long state;
struct kref kref;
};