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scsi: hisi_sas: Initialise devices in .slave_alloc callback

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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>
This commit is contained in:
Xiang Chen 2021-10-12 20:26:25 +08:00 • committed by Martin K. Petersen
parent d489f18ad1
commit 36c6b7613e
5 changed files with 18 additions and 6 deletions
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1
drivers/scsi/hisi_sas/hisi_sas.h
View file

@ -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);

17
drivers/scsi/hisi_sas/hisi_sas_main.c
View file

@ -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;

2
drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
View file

@ -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

2
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
View file

@ -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

2
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
View file

@ -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