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authorHannes Reinecke <hare@suse.de>2017-09-20 09:18:51 +0200
committerMartin K. Petersen <martin.petersen@oracle.com>2017-09-25 19:03:14 -0400
commit2a8f7a0344c8b068cf4b13f1bf4bdd65b8787d04 (patch)
treef47c8b4be2bf668a3eece994a654d6a4b8e36a25 /drivers/scsi/device_handler
parentb7af62a945706e32b987f1dd0cc86bb41a8210c3 (diff)
downloadlinux-2a8f7a0344c8b068cf4b13f1bf4bdd65b8787d04.tar.bz2
scsi: scsi_dh: Return SCSI_DH_XX error code from ->attach()
Rather than having each device handler implementing their own error mapping, have the ->attach() call return a SCSI_DH_XXX error code and implement the mapping in scsi_dh_handler_attach(). Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/device_handler')
-rw-r--r--drivers/scsi/device_handler/scsi_dh_alua.c10
-rw-r--r--drivers/scsi/device_handler/scsi_dh_emc.c6
-rw-r--r--drivers/scsi/device_handler/scsi_dh_hp_sw.c12
-rw-r--r--drivers/scsi/device_handler/scsi_dh_rdac.c6
4 files changed, 18 insertions, 16 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 0962fd544401..fd22dc6ab5d9 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -1085,11 +1085,11 @@ static void alua_rescan(struct scsi_device *sdev)
static int alua_bus_attach(struct scsi_device *sdev)
{
struct alua_dh_data *h;
- int err, ret = -EINVAL;
+ int err;
h = kzalloc(sizeof(*h) , GFP_KERNEL);
if (!h)
- return -ENOMEM;
+ return SCSI_DH_NOMEM;
spin_lock_init(&h->pg_lock);
rcu_assign_pointer(h->pg, NULL);
h->init_error = SCSI_DH_OK;
@@ -1098,16 +1098,14 @@ static int alua_bus_attach(struct scsi_device *sdev)
mutex_init(&h->init_mutex);
err = alua_initialize(sdev, h);
- if (err == SCSI_DH_NOMEM)
- ret = -ENOMEM;
if (err != SCSI_DH_OK && err != SCSI_DH_DEV_OFFLINED)
goto failed;
sdev->handler_data = h;
- return 0;
+ return SCSI_DH_OK;
failed:
kfree(h);
- return ret;
+ return err;
}
/*
diff --git a/drivers/scsi/device_handler/scsi_dh_emc.c b/drivers/scsi/device_handler/scsi_dh_emc.c
index 8654e940e1a8..6a2792f3a37e 100644
--- a/drivers/scsi/device_handler/scsi_dh_emc.c
+++ b/drivers/scsi/device_handler/scsi_dh_emc.c
@@ -490,7 +490,7 @@ static int clariion_bus_attach(struct scsi_device *sdev)
h = kzalloc(sizeof(*h) , GFP_KERNEL);
if (!h)
- return -ENOMEM;
+ return SCSI_DH_NOMEM;
h->lun_state = CLARIION_LUN_UNINITIALIZED;
h->default_sp = CLARIION_UNBOUND_LU;
h->current_sp = CLARIION_UNBOUND_LU;
@@ -510,11 +510,11 @@ static int clariion_bus_attach(struct scsi_device *sdev)
h->default_sp + 'A');
sdev->handler_data = h;
- return 0;
+ return SCSI_DH_OK;
failed:
kfree(h);
- return -EINVAL;
+ return err;
}
static void clariion_bus_detach(struct scsi_device *sdev)
diff --git a/drivers/scsi/device_handler/scsi_dh_hp_sw.c b/drivers/scsi/device_handler/scsi_dh_hp_sw.c
index 62d314e07d11..e65a0ebb4b54 100644
--- a/drivers/scsi/device_handler/scsi_dh_hp_sw.c
+++ b/drivers/scsi/device_handler/scsi_dh_hp_sw.c
@@ -218,24 +218,28 @@ static int hp_sw_bus_attach(struct scsi_device *sdev)
h = kzalloc(sizeof(*h), GFP_KERNEL);
if (!h)
- return -ENOMEM;
+ return SCSI_DH_NOMEM;
h->path_state = HP_SW_PATH_UNINITIALIZED;
h->retries = HP_SW_RETRIES;
h->sdev = sdev;
ret = hp_sw_tur(sdev, h);
- if (ret != SCSI_DH_OK || h->path_state == HP_SW_PATH_UNINITIALIZED)
+ if (ret != SCSI_DH_OK)
goto failed;
+ if (h->path_state == HP_SW_PATH_UNINITIALIZED) {
+ ret = SCSI_DH_NOSYS;
+ goto failed;
+ }
sdev_printk(KERN_INFO, sdev, "%s: attached to %s path\n",
HP_SW_NAME, h->path_state == HP_SW_PATH_ACTIVE?
"active":"passive");
sdev->handler_data = h;
- return 0;
+ return SCSI_DH_OK;
failed:
kfree(h);
- return -EINVAL;
+ return ret;
}
static void hp_sw_bus_detach( struct scsi_device *sdev )
diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c b/drivers/scsi/device_handler/scsi_dh_rdac.c
index 2ceff585f189..7af31a1247ee 100644
--- a/drivers/scsi/device_handler/scsi_dh_rdac.c
+++ b/drivers/scsi/device_handler/scsi_dh_rdac.c
@@ -729,7 +729,7 @@ static int rdac_bus_attach(struct scsi_device *sdev)
h = kzalloc(sizeof(*h) , GFP_KERNEL);
if (!h)
- return -ENOMEM;
+ return SCSI_DH_NOMEM;
h->lun = UNINITIALIZED_LUN;
h->state = RDAC_STATE_ACTIVE;
@@ -755,7 +755,7 @@ static int rdac_bus_attach(struct scsi_device *sdev)
lun_state[(int)h->lun_state]);
sdev->handler_data = h;
- return 0;
+ return SCSI_DH_OK;
clean_ctlr:
spin_lock(&list_lock);
@@ -764,7 +764,7 @@ clean_ctlr:
failed:
kfree(h);
- return -EINVAL;
+ return err;
}
static void rdac_bus_detach( struct scsi_device *sdev )