scsi: zfcp: Switch to attribute groups

struct device supports attribute groups directly but does not support
struct device_attribute directly. Hence switch to attribute groups.

Link: https://lore.kernel.org/r/20211012233558.4066756-7-bvanassche@acm.orgAcked-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/s390/scsi/zfcp_ext.h

@@ -184,8 +184,8 @@ extern const struct attribute_group *zfcp_sysfs_adapter_attr_groups[];
 extern const struct attribute_group *zfcp_unit_attr_groups[];
 extern const struct attribute_group *zfcp_port_attr_groups[];
 extern struct mutex zfcp_sysfs_port_units_mutex;
-extern struct device_attribute *zfcp_sysfs_sdev_attrs[];
-extern struct device_attribute *zfcp_sysfs_shost_attrs[];
+extern const struct attribute_group *zfcp_sysfs_sdev_attr_groups[];
+extern const struct attribute_group *zfcp_sysfs_shost_attr_groups[];
 bool zfcp_sysfs_port_is_removing(const struct zfcp_port *const port);
 
 /* zfcp_unit.c */

drivers/s390/scsi/zfcp_scsi.c

@@ -444,8 +444,8 @@ static struct scsi_host_template zfcp_scsi_host_template = {
 	/* report size limit per scatter-gather segment */
 	.max_segment_size	 = ZFCP_QDIO_SBALE_LEN,
 	.dma_boundary		 = ZFCP_QDIO_SBALE_LEN - 1,
-	.shost_attrs		 = zfcp_sysfs_shost_attrs,
-	.sdev_attrs		 = zfcp_sysfs_sdev_attrs,
+	.shost_groups		 = zfcp_sysfs_shost_attr_groups,
+	.sdev_groups		 = zfcp_sysfs_sdev_attr_groups,
 	.track_queue_depth	 = 1,
 	.supported_mode		 = MODE_INITIATOR,
 };

drivers/s390/scsi/zfcp_sysfs.c

@@ -672,17 +672,26 @@ ZFCP_DEFINE_SCSI_ATTR(zfcp_in_recovery, "%d\n",
 ZFCP_DEFINE_SCSI_ATTR(zfcp_status, "0x%08x\n",
 		      atomic_read(&zfcp_sdev->status));
 
-struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
-	&dev_attr_fcp_lun,
-	&dev_attr_wwpn,
-	&dev_attr_hba_id,
-	&dev_attr_read_latency,
-	&dev_attr_write_latency,
-	&dev_attr_cmd_latency,
-	&dev_attr_zfcp_access_denied,
-	&dev_attr_zfcp_failed,
-	&dev_attr_zfcp_in_recovery,
-	&dev_attr_zfcp_status,
+struct attribute *zfcp_sdev_attrs[] = {
+	&dev_attr_fcp_lun.attr,
+	&dev_attr_wwpn.attr,
+	&dev_attr_hba_id.attr,
+	&dev_attr_read_latency.attr,
+	&dev_attr_write_latency.attr,
+	&dev_attr_cmd_latency.attr,
+	&dev_attr_zfcp_access_denied.attr,
+	&dev_attr_zfcp_failed.attr,
+	&dev_attr_zfcp_in_recovery.attr,
+	&dev_attr_zfcp_status.attr,
+	NULL
+};
+
+static const struct attribute_group zfcp_sysfs_sdev_attr_group = {
+	.attrs = zfcp_sdev_attrs
+};
+
+const struct attribute_group *zfcp_sysfs_sdev_attr_groups[] = {
+	&zfcp_sysfs_sdev_attr_group,
 	NULL
 };
 
@@ -783,12 +792,21 @@ static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
 }
 static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
 
-struct device_attribute *zfcp_sysfs_shost_attrs[] = {
-	&dev_attr_utilization,
-	&dev_attr_requests,
-	&dev_attr_megabytes,
-	&dev_attr_seconds_active,
-	&dev_attr_queue_full,
+static struct attribute *zfcp_sysfs_shost_attrs[] = {
+	&dev_attr_utilization.attr,
+	&dev_attr_requests.attr,
+	&dev_attr_megabytes.attr,
+	&dev_attr_seconds_active.attr,
+	&dev_attr_queue_full.attr,
+	NULL
+};
+
+static const struct attribute_group zfcp_sysfs_shost_attr_group = {
+	.attrs = zfcp_sysfs_shost_attrs
+};
+
+const struct attribute_group *zfcp_sysfs_shost_attr_groups[] = {
+	&zfcp_sysfs_shost_attr_group,
 	NULL
 };