From: Xiang Chen <chenxiang66@hisilicon.com>
Date: Tue, 12 Oct 2021 20:26:25 +0800
Subject: scsi: hisi_sas: Initialise devices in .slave_alloc callback
Git-commit: 36c6b7613ef1ffd88637315f11c71896f3ce4856
Patch-mainline: v5.16-rc1
References: bsc#1198802
Perform driver-specific SCSI device initialization in the designated SCSI
midlayer callback instead of relying on the libsas "device found" callback.
The SCSI midlayer .slave_alloc interface is called prior to sending any I/O
to the device.
Link: https://lore.kernel.org/r/1634041588-74824-2-git-send-email-john.garry@huawei.com
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.com>
---
drivers/scsi/hisi_sas/hisi_sas.h | 1 +
drivers/scsi/hisi_sas/hisi_sas_main.c | 17 ++++++++++++++---
drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 2 +-
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 2 +-
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 2 +-
5 files changed, 18 insertions(+), 6 deletions(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index 57be32ba0109..2213a91923a5 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -649,6 +649,7 @@ extern int hisi_sas_probe(struct platform_device *pdev,
extern int hisi_sas_remove(struct platform_device *pdev);
extern int hisi_sas_slave_configure(struct scsi_device *sdev);
+extern int hisi_sas_slave_alloc(struct scsi_device *sdev);
extern int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time);
extern void hisi_sas_scan_start(struct Scsi_Host *shost);
extern int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type);
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index bb1c8ef3a76f..0835ba7c0ac2 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -756,6 +756,20 @@ static int hisi_sas_init_device(struct domain_device *device)
return rc;
}
+int hisi_sas_slave_alloc(struct scsi_device *sdev)
+{
+ struct domain_device *ddev;
+ int rc;
+
+ rc = sas_slave_alloc(sdev);
+ if (rc)
+ return rc;
+ ddev = sdev_to_domain_dev(sdev);
+
+ return hisi_sas_init_device(ddev);
+}
+EXPORT_SYMBOL_GPL(hisi_sas_slave_alloc);
+
static int hisi_sas_dev_found(struct domain_device *device)
{
struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
@@ -802,9 +816,6 @@ static int hisi_sas_dev_found(struct domain_device *device)
dev_info(dev, "dev[%d:%x] found\n",
sas_dev->device_id, sas_dev->dev_type);
- rc = hisi_sas_init_device(device);
- if (rc)
- goto err_out;
sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
return 0;
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
index 862f4e8b7eb5..51e7d12f5053 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -1771,7 +1771,7 @@ static struct scsi_host_template sht_v1_hw = {
.max_sectors = SCSI_DEFAULT_MAX_SECTORS,
.eh_device_reset_handler = sas_eh_device_reset_handler,
.eh_target_reset_handler = sas_eh_target_reset_handler,
- .slave_alloc = sas_slave_alloc,
+ .slave_alloc = hisi_sas_slave_alloc,
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
#ifdef CONFIG_COMPAT
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index 236cf65c2f97..741a62e6bf77 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -3584,7 +3584,7 @@ static struct scsi_host_template sht_v2_hw = {
.max_sectors = SCSI_DEFAULT_MAX_SECTORS,
.eh_device_reset_handler = sas_eh_device_reset_handler,
.eh_target_reset_handler = sas_eh_target_reset_handler,
- .slave_alloc = sas_slave_alloc,
+ .slave_alloc = hisi_sas_slave_alloc,
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
#ifdef CONFIG_COMPAT
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index f4517f3eb922..114a59654525 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -3157,7 +3157,7 @@ static struct scsi_host_template sht_v3_hw = {
.max_sectors = SCSI_DEFAULT_MAX_SECTORS,
.eh_device_reset_handler = sas_eh_device_reset_handler,
.eh_target_reset_handler = sas_eh_target_reset_handler,
- .slave_alloc = sas_slave_alloc,
+ .slave_alloc = hisi_sas_slave_alloc,
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
#ifdef CONFIG_COMPAT