scsi: core: Remove two host template members that are no longer used

All SCSI drivers have been converted to use shost_groups and sdev_groups
instead of shost_attrs or sdev_attrs. Hence remove shost_attrs and
sdev_attrs. Additionally, remove the 'lld_attr_group' members and also
the scsi_convert_dev_attrs() function.

Link: https://lore.kernel.org/r/20211012233558.4066756-47-bvanassche@acm.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-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/scsi/hosts.c

@@ -483,15 +483,6 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
 	dev_set_name(&shost->shost_dev, "host%d", shost->host_no);
 	shost->shost_dev.groups = shost->shost_dev_attr_groups;
 	shost->shost_dev_attr_groups[j++] = &scsi_shost_attr_group;
-	if (sht->shost_attrs) {
-		shost->lld_attr_group = (struct attribute_group){
-			.attrs = scsi_convert_dev_attrs(&shost->shost_gendev,
-							sht->shost_attrs)
-		};
-		if (shost->lld_attr_group.attrs)
-			shost->shost_dev_attr_groups[j++] =
-				&shost->lld_attr_group;
-	}
 	if (sht->shost_groups) {
 		for (i = 0; sht->shost_groups[i] &&
 			     j < ARRAY_SIZE(shost->shost_dev_attr_groups);

drivers/scsi/scsi_priv.h

@@ -138,8 +138,6 @@ extern int scsi_sysfs_add_sdev(struct scsi_device *);
 extern int scsi_sysfs_add_host(struct Scsi_Host *);
 extern int scsi_sysfs_register(void);
 extern void scsi_sysfs_unregister(void);
-struct attribute **scsi_convert_dev_attrs(struct device *dev,
-					  struct device_attribute **dev_attr);
 extern void scsi_sysfs_device_initialize(struct scsi_device *);
 extern int scsi_sysfs_target_initialize(struct scsi_device *);
 extern struct scsi_transport_template blank_transport_template;

drivers/scsi/scsi_sysfs.c

@@ -1563,26 +1563,6 @@ int scsi_sysfs_add_host(struct Scsi_Host *shost)
 	return 0;
 }
 
-/*
- * Convert an array of struct device_attribute pointers into an array of
- * struct attribute pointers.
- */
-struct attribute **scsi_convert_dev_attrs(struct device *dev,
-					  struct device_attribute **dev_attr)
-{
-	struct attribute **attrs;
-	int i;
-
-	for (i = 0; dev_attr[i]; i++)
-		;
-	attrs = devm_kzalloc(dev, (i + 1) * sizeof(*attrs), GFP_KERNEL);
-	if (!attrs)
-		return NULL;
-	for (i = 0; dev_attr[i]; i++)
-		attrs[i] = &dev_attr[i]->attr;
-	return attrs;
-}
-
 static struct device_type scsi_dev_type = {
 	.name =		"scsi_device",
 	.release =	scsi_device_dev_release,
@@ -1604,14 +1584,6 @@ void scsi_sysfs_device_initialize(struct scsi_device *sdev)
 	dev_set_name(&sdev->sdev_gendev, "%d:%d:%d:%llu",
 		     sdev->host->host_no, sdev->channel, sdev->id, sdev->lun);
 	sdev->gendev_attr_groups[j++] = &scsi_sdev_attr_group;
-	if (hostt->sdev_attrs) {
-		sdev->lld_attr_group = (struct attribute_group){
-			.attrs = scsi_convert_dev_attrs(&sdev->sdev_gendev,
-							hostt->sdev_attrs)
-		};
-		if (sdev->lld_attr_group.attrs)
-			sdev->gendev_attr_groups[j++] = &sdev->lld_attr_group;
-	}
 	if (hostt->sdev_groups) {
 		for (i = 0; hostt->sdev_groups[i] &&
 			     j < ARRAY_SIZE(sdev->gendev_attr_groups);

include/scsi/scsi_device.h

@@ -225,7 +225,6 @@ struct scsi_device {
 
 	struct device		sdev_gendev,
 				sdev_dev;
-	struct attribute_group	lld_attr_group;
 	/*
 	 * The array size 6 provides space for one attribute group for the
 	 * SCSI core, four attribute groups defined by SCSI LLDs and one

include/scsi/scsi_host.h

@@ -473,16 +473,6 @@ struct scsi_host_template {
 	 */
 #define SCSI_DEFAULT_HOST_BLOCKED	7
 
-	/*
-	 * Pointer to the sysfs class properties for this host, NULL terminated.
-	 */
-	struct device_attribute **shost_attrs;
-
-	/*
-	 * Pointer to the SCSI device properties for this host, NULL terminated.
-	 */
-	struct device_attribute **sdev_attrs;
-
 	/*
 	 * Pointer to the SCSI host sysfs attribute groups, NULL terminated.
 	 */
@@ -700,7 +690,6 @@ struct Scsi_Host {
 
 	/* ldm bits */
 	struct device		shost_gendev, shost_dev;
-	struct attribute_group	lld_attr_group;
 	/*
 	 * The array size 3 provides space for one attribute group defined by
 	 * the SCSI core, one attribute group defined by the SCSI LLD and one