add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/scsi/scsi_transport_sas.c
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@@ -1,6 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2005-2006 Dell Inc.
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- *	Released under GPL v2.
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  *
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  * Serial Attached SCSI (SAS) transport class.
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  *
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@@ -198,7 +198,7 @@
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 	if (rphy) {
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 		q = bsg_setup_queue(&rphy->dev, dev_name(&rphy->dev),
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-				sas_smp_dispatch, 0);
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+				sas_smp_dispatch, NULL, 0);
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 		if (IS_ERR(q))
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 			return PTR_ERR(q);
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 		rphy->q = q;
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@@ -207,13 +207,12 @@
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 		snprintf(name, sizeof(name), "sas_host%d", shost->host_no);
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 		q = bsg_setup_queue(&shost->shost_gendev, name,
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-				sas_smp_dispatch, 0);
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+				sas_smp_dispatch, NULL, 0);
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 		if (IS_ERR(q))
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 			return PTR_ERR(q);
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 		to_sas_host_attrs(shost)->q = q;
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 	}
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-	blk_queue_flag_set(QUEUE_FLAG_BIDI, q);
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 	return 0;
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 }
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@@ -246,11 +245,7 @@
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 	struct Scsi_Host *shost = dev_to_shost(dev);
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 	struct request_queue *q = to_sas_host_attrs(shost)->q;
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-	if (q) {
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-		bsg_unregister_queue(q);
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-		blk_cleanup_queue(q);
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-	}
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-
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+	bsg_remove_queue(q);
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 	return 0;
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 }
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@@ -568,7 +563,7 @@
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 {
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 	struct sas_phy *phy = transport_class_to_phy(dev);
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-	return snprintf(buf, 20, "%d", phy->enabled);
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+	return snprintf(buf, 20, "%d\n", phy->enabled);
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 }
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 static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, show_sas_phy_enable,
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@@ -612,7 +607,6 @@
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 sas_phy_simple_attr(identify.sas_address, sas_address, "0x%016llx\n",
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 		unsigned long long);
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 sas_phy_simple_attr(identify.phy_identifier, phy_identifier, "%d\n", u8);
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-//sas_phy_simple_attr(port_identifier, port_identifier, "%d\n", int);
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 sas_phy_linkspeed_attr(negotiated_linkrate);
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 sas_phy_linkspeed_attr(minimum_linkrate_hw);
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 sas_phy_linkspeed_rw_attr(minimum_linkrate);
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@@ -722,12 +716,17 @@
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 	int error;
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 	error = device_add(&phy->dev);
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-	if (!error) {
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-		transport_add_device(&phy->dev);
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-		transport_configure_device(&phy->dev);
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-	}
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+	if (error)
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+		return error;
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-	return error;
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+	error = transport_add_device(&phy->dev);
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+	if (error) {
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+		device_del(&phy->dev);
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+		return error;
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+	}
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+	transport_configure_device(&phy->dev);
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+
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+	return 0;
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 }
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 EXPORT_SYMBOL(sas_phy_add);
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@@ -1235,16 +1234,15 @@
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 	char *buffer = kzalloc(BUF_SIZE, GFP_KERNEL), *msdata;
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 	struct sas_end_device *rdev = sas_sdev_to_rdev(sdev);
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 	struct scsi_mode_data mode_data;
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-	int res, error;
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+	int error;
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 	if (!buffer)
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 		return -ENOMEM;
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-	res = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
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-			      &mode_data, NULL);
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+	error = scsi_mode_sense(sdev, 1, 0x19, buffer, BUF_SIZE, 30*HZ, 3,
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+				&mode_data, NULL);
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-	error = -EINVAL;
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-	if (!scsi_status_is_good(res))
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+	if (error)
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 		goto out;
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 	msdata = buffer +  mode_data.header_length +
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@@ -1397,9 +1395,6 @@
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 	struct sas_rphy *rphy = dev_to_rphy(dev);
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 	struct sas_expander_device *edev = rphy_to_expander_device(rphy);
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-	if (rphy->q)
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-		blk_cleanup_queue(rphy->q);
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-
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 	put_device(dev->parent);
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 	kfree(edev);
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 }
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@@ -1408,9 +1403,6 @@
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 {
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 	struct sas_rphy *rphy = dev_to_rphy(dev);
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 	struct sas_end_device *edev = rphy_to_end_device(rphy);
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-
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-	if (rphy->q)
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-		blk_cleanup_queue(rphy->q);
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 	put_device(dev->parent);
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 	kfree(edev);
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@@ -1538,7 +1530,7 @@
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 	list_add_tail(&rphy->list, &sas_host->rphy_list);
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 	if (identify->device_type == SAS_END_DEVICE &&
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 	    (identify->target_port_protocols &
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-	     (SAS_PROTOCOL_SSP|SAS_PROTOCOL_STP|SAS_PROTOCOL_SATA)))
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+	     (SAS_PROTOCOL_SSP | SAS_PROTOCOL_STP | SAS_PROTOCOL_SATA)))
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 		rphy->scsi_target_id = sas_host->next_target_id++;
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 	else if (identify->device_type == SAS_END_DEVICE)
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 		rphy->scsi_target_id = -1;
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@@ -1640,8 +1632,7 @@
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 	}
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 	sas_rphy_unlink(rphy);
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-	if (rphy->q)
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-		bsg_unregister_queue(rphy->q);
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+	bsg_remove_queue(rphy->q);
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 	transport_remove_device(dev);
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 	device_del(dev);
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 }
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@@ -1802,7 +1793,6 @@
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 	SETUP_PHY_ATTRIBUTE(device_type);
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 	SETUP_PHY_ATTRIBUTE(sas_address);
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 	SETUP_PHY_ATTRIBUTE(phy_identifier);
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-	//SETUP_PHY_ATTRIBUTE(port_identifier);
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 	SETUP_PHY_ATTRIBUTE(negotiated_linkrate);
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 	SETUP_PHY_ATTRIBUTE(minimum_linkrate_hw);
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 	SETUP_PHY_ATTRIBUTE_RW(minimum_linkrate);