[PATCH v3 2/5] scsi: libsas: change the coding style of sas_discover_sata()

[Jason Yan <yanaijie@xxxxxxxxxx>]

The coding style where calling this interface is inconsistent with other
interfaces for SATA devices. The standard style for other SATA interfaces
is like:

    #ifdefine CONFIG_SCSI_SAS_ATA
    void sas_ata_task_abort(struct sas_task *task);
    #else
    static inline void sas_ata_task_abort(struct sas_task *task)
    {
    }
    #endif

And the callers does not have to do things like "#ifdefine CONFIG_SCSI_SAS_ATA"
and may call the interface directly. So follow the standard style here.

Cc: John Garry <john.g.garry@xxxxxxxxxx>
Signed-off-by: Jason Yan <yanaijie@xxxxxxxxxx>
---
 drivers/scsi/libsas/sas_discover.c | 6 ------
 include/scsi/libsas.h              | 1 -
 include/scsi/sas_ata.h             | 9 +++++++++
 3 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c
index d5bc1314c341..72fdb2e5d047 100644
--- a/drivers/scsi/libsas/sas_discover.c
+++ b/drivers/scsi/libsas/sas_discover.c
@@ -455,14 +455,8 @@ static void sas_discover_domain(struct work_struct *work)
 		break;
 	case SAS_SATA_DEV:
 	case SAS_SATA_PM:
-#ifdef CONFIG_SCSI_SAS_ATA
 		error = sas_discover_sata(dev);
 		break;
-#else
-		pr_notice("ATA device seen but CONFIG_SCSI_SAS_ATA=N so cannot attach\n");
-		fallthrough;
-#endif
-		/* Fall through - only for the #else condition above. */
 	default:
 		error = -ENXIO;
 		pr_err("unhandled device %d\n", dev->dev_type);
diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h
index 1aee3d0ebbb2..159823e0afbf 100644
--- a/include/scsi/libsas.h
+++ b/include/scsi/libsas.h
@@ -735,7 +735,6 @@ void sas_unregister_domain_devices(struct asd_sas_port *port, int gone);
 void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *);
 void sas_discover_event(struct asd_sas_port *, enum discover_event ev);
 
-int  sas_discover_sata(struct domain_device *);
 int  sas_discover_end_dev(struct domain_device *);
 
 void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *);
diff --git a/include/scsi/sas_ata.h b/include/scsi/sas_ata.h
index 9c927d46f136..7cdba456b746 100644
--- a/include/scsi/sas_ata.h
+++ b/include/scsi/sas_ata.h
@@ -36,8 +36,11 @@ void sas_ata_device_link_abort(struct domain_device *dev, bool force_reset);
 int sas_execute_ata_cmd(struct domain_device *device, u8 *fis,
 			int force_phy_id);
 int smp_ata_check_ready_type(struct ata_link *link);
+int sas_discover_sata(struct domain_device *dev);
 #else
 
+#define SAS_ATA_DISABLED_NOTICE \
+	pr_notice_once("ATA device seen but CONFIG_SCSI_SAS_ATA=N\n")
 
 static inline int dev_is_sata(struct domain_device *dev)
 {
@@ -103,6 +106,12 @@ static inline int smp_ata_check_ready_type(struct ata_link *link)
 {
 	return 0;
 }
+
+static inline int sas_discover_sata(struct domain_device *dev)
+{
+	SAS_ATA_DISABLED_NOTICE;
+	return -ENXIO;
+}
 #endif
 
 #endif /* _SAS_ATA_H_ */
-- 
2.31.1