scsi: sas: move scsi_remove_host call into sas_remove_host

Move scsi_remove_host call into sas_remove_host and remove it from SAS
HBA drivers, so we don't mess up the ordering. This solves an issue with
double deleting sysfs entries that was introduced by the change of sysfs
behaviour from commit bcdde7e221a8 ("sysfs: make __sysfs_remove_dir()
recursive").

[mkp: addressed checkpatch complaints]

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Suggested-by: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: James Bottomley <jejb@linux.vnet.ibm.com>
Cc: Jinpu Wang <jinpu.wang@profitbricks.com>
Cc: John Garry <john.garry@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jinpu Wang <jinpu.wang@profitbricks.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

7 files changed, 6 insertions, 8 deletions

diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c
index 662b2321d1b0..a14ba7a6b81e 100644
--- a/drivers/scsi/aic94xx/aic94xx_init.c
+++ b/drivers/scsi/aic94xx/aic94xx_init.c
@@ -703,7 +703,6 @@ static int asd_unregister_sas_ha(struct asd_ha_struct *asd_ha)
 {
 	int err;
 
-	scsi_remove_host(asd_ha->sas_ha.core.shost);
 	err = sas_unregister_ha(&asd_ha->sas_ha);
 
 	sas_remove_host(asd_ha->sas_ha.core.shost);
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 7e6e8823a5c7..d622db502ec9 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -1787,7 +1787,6 @@ int hisi_sas_remove(struct platform_device *pdev)
 	struct hisi_hba *hisi_hba = sha->lldd_ha;
 	struct Scsi_Host *shost = sha->core.shost;
 
-	scsi_remove_host(sha->core.shost);
 	sas_unregister_ha(sha);
 	sas_remove_host(sha->core.shost);
 
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
index 0b5b5db0d0f8..45371179ab87 100644
--- a/drivers/scsi/isci/init.c
+++ b/drivers/scsi/isci/init.c
@@ -272,7 +272,6 @@ static void isci_unregister(struct isci_host *isci_host)
 		return;
 
 	shost = to_shost(isci_host);
-	scsi_remove_host(shost);
 	sas_unregister_ha(&isci_host->sas_ha);
 
 	sas_remove_host(shost);
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 46e866c36c8a..1a268a685815 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -8298,7 +8298,6 @@ static void scsih_remove(struct pci_dev *pdev)
 	}
 
 	sas_remove_host(shost);
-	scsi_remove_host(shost);
 	mpt3sas_base_detach(ioc);
 	spin_lock(&gioc_lock);
 	list_del(&ioc->list);
diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c
index 8280046fd1f0..4e047b5001a6 100644
--- a/drivers/scsi/mvsas/mv_init.c
+++ b/drivers/scsi/mvsas/mv_init.c
@@ -642,7 +642,6 @@ static void mvs_pci_remove(struct pci_dev *pdev)
 	tasklet_kill(&((struct mvs_prv_info *)sha->lldd_ha)->mv_tasklet);
 #endif
 
-	scsi_remove_host(mvi->shost);
 	sas_unregister_ha(sha);
 	sas_remove_host(mvi->shost);
 
diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
index 417368ccb686..034b2f7d1135 100644
--- a/drivers/scsi/pm8001/pm8001_init.c
+++ b/drivers/scsi/pm8001/pm8001_init.c
@@ -1088,7 +1088,6 @@ static void pm8001_pci_remove(struct pci_dev *pdev)
 	struct pm8001_hba_info *pm8001_ha;
 	int i, j;
 	pm8001_ha = sha->lldd_ha;
-	scsi_remove_host(pm8001_ha->shost);
 	sas_unregister_ha(sha);
 	sas_remove_host(pm8001_ha->shost);
 	list_del(&pm8001_ha->list);
diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index cdbb293aca08..ca0e5a9a17f8 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -370,12 +370,16 @@ EXPORT_SYMBOL(sas_remove_children);
  * sas_remove_host  -  tear down a Scsi_Host's SAS data structures
  * @shost:	Scsi Host that is torn down
  *
- * Removes all SAS PHYs and remote PHYs for a given Scsi_Host.
- * Must be called just before scsi_remove_host for SAS HBAs.
+ * Removes all SAS PHYs and remote PHYs for a given Scsi_Host and remove the
+ * Scsi_Host as well.
+ *
+ * Note: Do not call scsi_remove_host() on the Scsi_Host any more, as it is
+ * already removed.
  */
 void sas_remove_host(struct Scsi_Host *shost)
 {
 	sas_remove_children(&shost->shost_gendev);
+	scsi_remove_host(shost);
 }
 EXPORT_SYMBOL(sas_remove_host);