From: Jason Yan <yanaijie@huawei.com>
Date: Tue, 25 Sep 2018 10:56:51 +0800
Subject: scsi: libsas: make the lldd_port_deformed method optional
Patch-mainline: v4.20-rc1
Git-commit: 640208a1c91c380a09056a26d3750b137b7e8c4d
References: FATE#326253
Now LLDDs have to implement lldd_port_deformed method otherwise NULL
dereference will happen. Make it optional and remove the dummy implementation
in hisi_sas.
Signed-off-by: Jason Yan <yanaijie@huawei.com>
CC: John Garry <john.garry@huawei.com>
CC: Johannes Thumshirn <jthumshirn@suse.de>
CC: Ewan Milne <emilne@redhat.com>
CC: Christoph Hellwig <hch@lst.de>
CC: Tomas Henzl <thenzl@redhat.com>
CC: Dan Williams <dan.j.williams@intel.com>
CC: Hannes Reinecke <hare@suse.com>
Acked-by: John Garry <john.garry@huawei.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
---
drivers/scsi/hisi_sas/hisi_sas_main.c | 9 ++-------
drivers/scsi/libsas/sas_discover.c | 2 +-
2 files changed, 3 insertions(+), 8 deletions(-)
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -1863,10 +1863,6 @@ static void hisi_sas_port_formed(struct
hisi_sas_port_notify_formed(sas_phy);
}
-static void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy)
-{
-}
-
static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type,
u8 reg_index, u8 reg_count, u8 *write_data)
{
@@ -1952,14 +1948,13 @@ static struct sas_domain_function_templa
.lldd_control_phy = hisi_sas_control_phy,
.lldd_abort_task = hisi_sas_abort_task,
.lldd_abort_task_set = hisi_sas_abort_task_set,
- .lldd_write_gpio = hisi_sas_write_gpio,
.lldd_clear_aca = hisi_sas_clear_aca,
.lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset,
.lldd_lu_reset = hisi_sas_lu_reset,
.lldd_query_task = hisi_sas_query_task,
- .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
+ .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
.lldd_port_formed = hisi_sas_port_formed,
- .lldd_port_deformed = hisi_sas_port_deformed,
+ .lldd_write_gpio = hisi_sas_write_gpio,
};
void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
--- a/drivers/scsi/libsas/sas_discover.c
+++ b/drivers/scsi/libsas/sas_discover.c
@@ -260,7 +260,7 @@ static void sas_suspend_devices(struct w
* phy_list is not being mutated
*/
list_for_each_entry(phy, &port->phy_list, port_phy_el) {
- if (si->dft->lldd_port_formed)
+ if (si->dft->lldd_port_deformed)
si->dft->lldd_port_deformed(phy);
phy->suspended = 1;
port->suspended = 1;