This is a note to let you know that I've just added the patch titled
scsi: smartpqi: Correct device removal for multi-actuator devices
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-smartpqi-correct-device-removal-for-multi-actua.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 69521cb457a616d9b14a70649bce394b1b72435a
Author: Kumar Meiyappan <Kumar.Meiyappan@xxxxxxxxxxxxx>
Date: Tue Nov 8 13:21:58 2022 -0600
scsi: smartpqi: Correct device removal for multi-actuator devices
[ Upstream commit cc9befcbbb5ebce77726f938508700d913530035 ]
Correct device count for multi-actuator drives which can cause kernel
panics.
Reviewed-by: Scott Benesh <scott.benesh@xxxxxxxxxxxxx>
Reviewed-by: Scott Teel <scott.teel@xxxxxxxxxxxxx>
Reviewed-by: Mike Mcgowan <mike.mcgowan@xxxxxxxxxxxxx>
Reviewed-by: Kevin Barnett <kevin.barnett@xxxxxxxxxxxxx>
Signed-off-by: Kumar Meiyappan <Kumar.Meiyappan@xxxxxxxxxxxxx>
Signed-off-by: Don Brace <don.brace@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/166793531872.322537.9003385780343419275.stgit@brunhilda
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h
index e550b12e525a..c8235f15728b 100644
--- a/drivers/scsi/smartpqi/smartpqi.h
+++ b/drivers/scsi/smartpqi/smartpqi.h
@@ -1130,7 +1130,7 @@ struct pqi_scsi_dev {
u8 phy_id;
u8 ncq_prio_enable;
u8 ncq_prio_support;
- u8 multi_lun_device_lun_count;
+ u8 lun_count;
bool raid_bypass_configured; /* RAID bypass configured */
bool raid_bypass_enabled; /* RAID bypass enabled */
u32 next_bypass_group[RAID_MAP_MAX_DATA_DISKS_PER_ROW];
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index 898b0054cfa1..e011d82172d5 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -1610,9 +1610,7 @@ static int pqi_get_physical_device_info(struct pqi_ctrl_info *ctrl_info,
&id_phys->alternate_paths_phys_connector,
sizeof(device->phys_connector));
device->bay = id_phys->phys_bay_in_box;
- device->multi_lun_device_lun_count = id_phys->multi_lun_device_lun_count;
- if (!device->multi_lun_device_lun_count)
- device->multi_lun_device_lun_count = 1;
+ device->lun_count = id_phys->multi_lun_device_lun_count;
if ((id_phys->even_more_flags & PQI_DEVICE_PHY_MAP_SUPPORTED) &&
id_phys->phy_count)
device->phy_id =
@@ -1746,7 +1744,7 @@ static bool pqi_keep_device_offline(struct pqi_ctrl_info *ctrl_info,
return offline;
}
-static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
+static int pqi_get_device_info_phys_logical(struct pqi_ctrl_info *ctrl_info,
struct pqi_scsi_dev *device,
struct bmic_identify_physical_device *id_phys)
{
@@ -1763,6 +1761,20 @@ static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
return rc;
}
+static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
+ struct pqi_scsi_dev *device,
+ struct bmic_identify_physical_device *id_phys)
+{
+ int rc;
+
+ rc = pqi_get_device_info_phys_logical(ctrl_info, device, id_phys);
+
+ if (rc == 0 && device->lun_count == 0)
+ device->lun_count = 1;
+
+ return rc;
+}
+
static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
struct pqi_scsi_dev *device)
{
@@ -1897,7 +1909,7 @@ static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info, struct pqi
int rc;
int lun;
- for (lun = 0; lun < device->multi_lun_device_lun_count; lun++) {
+ for (lun = 0; lun < device->lun_count; lun++) {
rc = pqi_device_wait_for_pending_io(ctrl_info, device, lun,
PQI_REMOVE_DEVICE_PENDING_IO_TIMEOUT_MSECS);
if (rc)
@@ -2076,6 +2088,7 @@ static void pqi_scsi_update_device(struct pqi_ctrl_info *ctrl_info,
existing_device->sas_address = new_device->sas_address;
existing_device->queue_depth = new_device->queue_depth;
existing_device->device_offline = false;
+ existing_device->lun_count = new_device->lun_count;
if (pqi_is_logical_device(existing_device)) {
existing_device->is_external_raid_device = new_device->is_external_raid_device;
@@ -2108,10 +2121,6 @@ static void pqi_scsi_update_device(struct pqi_ctrl_info *ctrl_info,
existing_device->phy_connected_dev_type = new_device->phy_connected_dev_type;
memcpy(existing_device->box, new_device->box, sizeof(existing_device->box));
memcpy(existing_device->phys_connector, new_device->phys_connector, sizeof(existing_device->phys_connector));
-
- existing_device->multi_lun_device_lun_count = new_device->multi_lun_device_lun_count;
- if (existing_device->multi_lun_device_lun_count == 0)
- existing_device->multi_lun_device_lun_count = 1;
}
}
@@ -6484,6 +6493,12 @@ static void pqi_slave_destroy(struct scsi_device *sdev)
return;
}
+ device->lun_count--;
+ if (device->lun_count > 0) {
+ mutex_unlock(&ctrl_info->scan_mutex);
+ return;
+ }
+
spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
list_del(&device->scsi_device_list_entry);
spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
