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hc
2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390 
 kernel/drivers/scsi/cxlflash/main.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * CXL Flash Device Driver
34  *
....@@ -5,11 +6,6 @@
56  *             Matthew R. Ochs <mrochs@linux.vnet.ibm.com>, IBM Corporation
67  *
78  * Copyright (C) 2015 IBM Corporation
8
- *
9
- * This program is free software; you can redistribute it and/or
10
- * modify it under the terms of the GNU General Public License
11
- * as published by the Free Software Foundation; either version
12
- * 2 of the License, or (at your option) any later version.
139  */
1410 
1511 #include <linux/delay.h>
....@@ -48,14 +44,9 @@
4844 	struct afu *afu = cmd->parent;
4945 	struct cxlflash_cfg *cfg = afu->parent;
5046 	struct device *dev = &cfg->dev->dev;
51
-	struct sisl_ioarcb *ioarcb;
5247 	struct sisl_ioasa *ioasa;
5348 	u32 resid;
5449 
55
-	if (unlikely(!cmd))
56
-		return;
57
-
58
-	ioarcb = &(cmd->rcb);
5950 	ioasa = &(cmd->sa);
6051 
6152 	if (ioasa->rc.flags & SISL_RC_FLAGS_UNDERRUN) {
....@@ -757,13 +748,16 @@
757748 		/* SISL_MSI_ASYNC_ERROR is setup only for the primary HWQ */
758749 		if (index == PRIMARY_HWQ)
759750 			cfg->ops->unmap_afu_irq(hwq->ctx_cookie, 3, hwq);
751
+		fallthrough;
760752 	case UNMAP_TWO:
761753 		cfg->ops->unmap_afu_irq(hwq->ctx_cookie, 2, hwq);
754
+		fallthrough;
762755 	case UNMAP_ONE:
763756 		cfg->ops->unmap_afu_irq(hwq->ctx_cookie, 1, hwq);
757
+		fallthrough;
764758 	case FREE_IRQ:
765759 		cfg->ops->free_afu_irqs(hwq->ctx_cookie);
766
-		/* fall through */
760
+		fallthrough;
767761 	case UNDO_NOOP:
768762 		/* No action required */
769763 		break;
....@@ -977,14 +971,18 @@
977971 	switch (cfg->init_state) {
978972 	case INIT_STATE_CDEV:
979973 		cxlflash_release_chrdev(cfg);
974
+		fallthrough;
980975 	case INIT_STATE_SCSI:
981976 		cxlflash_term_local_luns(cfg);
982977 		scsi_remove_host(cfg->host);
978
+		fallthrough;
983979 	case INIT_STATE_AFU:
984980 		term_afu(cfg);
981
+		fallthrough;
985982 	case INIT_STATE_PCI:
986983 		cfg->ops->destroy_afu(cfg->afu_cookie);
987984 		pci_disable_device(pdev);
985
+		fallthrough;
988986 	case INIT_STATE_NONE:
989987 		free_mem(cfg);
990988 		scsi_host_put(cfg->host);
....@@ -2357,11 +2355,11 @@
23572355 			cxlflash_schedule_async_reset(cfg);
23582356 			break;
23592357 		}
2360
-		/* fall through to retry */
2358
+		fallthrough;	/* to retry */
23612359 	case -EAGAIN:
23622360 		if (++nretry < 2)
23632361 			goto retry;
2364
-		/* fall through to exit */
2362
+		fallthrough;	/* to exit */
23652363 	default:
23662364 		break;
23672365 	}
....@@ -2535,12 +2533,12 @@
25352533 			cfg->state = STATE_NORMAL;
25362534 		wake_up_all(&cfg->reset_waitq);
25372535 		ssleep(1);
2538
-		/* fall through */
2536
+		fallthrough;
25392537 	case STATE_RESET:
25402538 		wait_event(cfg->reset_waitq, cfg->state != STATE_RESET);
25412539 		if (cfg->state == STATE_NORMAL)
25422540 			break;
2543
-		/* fall through */
2541
+		fallthrough;
25442542 	default:
25452543 		rc = FAILED;
25462544 		break;
....@@ -3021,6 +3019,7 @@
30213019 		wait_event(cfg->reset_waitq, cfg->state != STATE_RESET);
30223020 		if (cfg->state == STATE_NORMAL)
30233021 			goto retry;
3022
+		fallthrough;
30243023 	default:
30253024 		/* Ideally should not happen */
30263025 		dev_err(dev, "%s: Device is not ready, state=%d\n",
....@@ -3085,12 +3084,6 @@
30853084 
30863085 	if (mode >= MAX_HWQ_MODE) {
30873086 		dev_info(cfgdev, "Invalid HWQ steering mode.\n");
3088
-		return -EINVAL;
3089
-	}
3090
-
3091
-	if ((mode == HWQ_MODE_TAG) && !shost_use_blk_mq(shost)) {
3092
-		dev_info(cfgdev, "SCSI-MQ is not enabled, use a different "
3093
-			 "HWQ steering mode.\n");
30943087 		return -EINVAL;
30953088 	}
30963089 
....@@ -3180,7 +3173,6 @@
31803173 	.this_id = -1,
31813174 	.sg_tablesize = 1,	/* No scatter gather support */
31823175 	.max_sectors = CXLFLASH_MAX_SECTORS,
3183
-	.use_clustering = ENABLE_CLUSTERING,
31843176 	.shost_attrs = cxlflash_host_attrs,
31853177 	.sdev_attrs = cxlflash_dev_attrs,
31863178 };
....@@ -3289,7 +3281,7 @@
32893281  *
32903282  * Return: A string identifying the decoded host ioctl.
32913283  */
3292
-static char *decode_hioctl(int cmd)
3284
+static char *decode_hioctl(unsigned int cmd)
32933285 {
32943286 	switch (cmd) {
32953287 	case HT_CXLFLASH_LUN_PROVISION:
....@@ -3539,7 +3531,7 @@
35393531 		if (likely(do_ioctl))
35403532 			break;
35413533 
3542
-		/* fall through */
3534
+		fallthrough;
35433535 	default:
35443536 		rc = -EINVAL;
35453537 		goto out;
....@@ -3596,7 +3588,7 @@
35963588 	.owner          = THIS_MODULE,
35973589 	.open           = cxlflash_chr_open,
35983590 	.unlocked_ioctl	= cxlflash_chr_ioctl,
3599
-	.compat_ioctl	= cxlflash_chr_ioctl,
3591
+	.compat_ioctl	= compat_ptr_ioctl,
36003592 };
36013593 
36023594 /**