[PATCH RFC v3 07/22] scsi: libsas: Notify LLDD expander found before calling sas_rphy_add()

John Garry
2022-10-25T09:50:25Z

Ensure that we notify the LLDD of the expander being found before calling
sas_rphy_add() as this function will require the LLDD be notified when
we alloc a scsi device for an expander.

Signed-off-by: John Garry <john.garry@huawei.com>
---
drivers/scsi/libsas/sas_expander.c | 30 +++++++++++++++---------------
1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c
index 9e33014ec412..e7cb95683522 100644
--- a/drivers/scsi/libsas/sas_expander.c
+++ b/drivers/scsi/libsas/sas_expander.c
@@ -976,9 +976,12 @@ static struct domain_device *sas_ex_discover_expander(
edev->level);
sas_init_dev(child);

+ if (!sas_notify_lldd_dev_found(child))
+ goto err_rphy_free;
+
sas_fill_in_rphy(child, rphy);
if (!sas_rphy_add(rphy))
- goto err_rphy_free;
+ goto err_dev_gone;

spin_lock_irq(&parent->port->dev_list_lock);
list_add_tail(&child->dev_list_node, &parent->port->dev_list);
@@ -995,6 +998,8 @@ static struct domain_device *sas_ex_discover_expander(
list_del(&child->dev_list_node);
spin_unlock_irq(&parent->port->dev_list_lock);
sas_rphy_remove(rphy);
+err_dev_gone:
+ sas_notify_lldd_dev_gone(child);
err_rphy_free:
sas_rphy_free(rphy);
err_free_port:
@@ -1575,32 +1580,22 @@ static int sas_discover_expander(struct domain_device *dev)
{
int res;

- res = sas_notify_lldd_dev_found(dev);
- if (res)
- return res;
-
res = sas_ex_general(dev);
if (res)
- goto out_err;
+ return res;
res = sas_ex_manuf_info(dev);
if (res)
- goto out_err;
+ return res;

res = sas_expander_discover(dev);
if (res) {
pr_warn("expander %016llx discovery failed(0x%x)\n",
SAS_ADDR(dev->sas_addr), res);
- goto out_err;
+ return res;
}

sas_check_ex_subtractive_boundary(dev);
- res = sas_check_parent_topology(dev);
- if (res)
- goto out_err;
- return 0;
-out_err:
- sas_notify_lldd_dev_gone(dev);
- return res;
+ return sas_check_parent_topology(dev);
}

static int sas_ex_level_discovery(struct asd_sas_port *port, const int level)
@@ -1643,6 +1638,10 @@ int sas_discover_root_expander(struct domain_device *dev)
int res;
struct sas_expander_device *ex = rphy_to_expander_device(dev->rphy);

+ res = sas_notify_lldd_dev_found(dev);
+ if (res)
+ return res;
+
res = sas_rphy_add(dev->rphy);
if (res)
goto out_err;
@@ -1659,6 +1658,7 @@ int sas_discover_root_expander(struct domain_device *dev)
out_err2:
sas_rphy_remove(dev->rphy);
out_err:
+ sas_notify_lldd_dev_gone(dev);
return res;
}

--
2.35.3