add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/pci/hotplug/cpqphp_core.c
..
..
@@ -121,7 +121,6 @@
121
121
 {
122
122
 	u32 tempdword;
123
123
 	u32 number_of_slots;
124
-	u8 physical_slot;
125
124
 
126
125
 	if (!ctrl)
127
126
 		return 1;
..
..
@@ -131,7 +130,6 @@
131
130
 	number_of_slots = readb(ctrl->hpc_reg + SLOT_MASK) & 0x0F;
132
131
 	/* Loop through slots */
133
132
 	while (number_of_slots) {
134
-		physical_slot = tempdword;
135
133
 		writeb(0, ctrl->hpc_reg + SLOT_SERR);
136
134
 		tempdword++;
137
135
 		number_of_slots--;
..
..
@@ -175,7 +173,6 @@
175
173
 		dbg("%d %d %d %d\n", tbus, tdevice >> 3, tdevice & 0x7, tslot);
176
174
 
177
175
 	}
178
-	return;
179
176
 }
180
177
 
181
178
 
..
..
@@ -275,9 +272,7 @@
275
272
 
276
273
 	while (old_slot) {
277
274
 		next_slot = old_slot->next;
278
-		pci_hp_deregister(old_slot->hotplug_slot);
279
-		kfree(old_slot->hotplug_slot->info);
280
-		kfree(old_slot->hotplug_slot);
275
+		pci_hp_deregister(&old_slot->hotplug_slot);
281
276
 		kfree(old_slot);
282
277
 		old_slot = next_slot;
283
278
 	}
..
..
@@ -419,7 +414,7 @@
419
414
 static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
420
415
 {
421
416
 	struct pci_func *slot_func;
422
-	struct slot *slot = hotplug_slot->private;
417
+	struct slot *slot = to_slot(hotplug_slot);
423
418
 	struct controller *ctrl = slot->ctrl;
424
419
 	u8 bus;
425
420
 	u8 devfn;
..
..
@@ -446,7 +441,7 @@
446
441
 static int process_SI(struct hotplug_slot *hotplug_slot)
447
442
 {
448
443
 	struct pci_func *slot_func;
449
-	struct slot *slot = hotplug_slot->private;
444
+	struct slot *slot = to_slot(hotplug_slot);
450
445
 	struct controller *ctrl = slot->ctrl;
451
446
 	u8 bus;
452
447
 	u8 devfn;
..
..
@@ -478,7 +473,7 @@
478
473
 static int process_SS(struct hotplug_slot *hotplug_slot)
479
474
 {
480
475
 	struct pci_func *slot_func;
481
-	struct slot *slot = hotplug_slot->private;
476
+	struct slot *slot = to_slot(hotplug_slot);
482
477
 	struct controller *ctrl = slot->ctrl;
483
478
 	u8 bus;
484
479
 	u8 devfn;
..
..
@@ -505,7 +500,7 @@
505
500
 
506
501
 static int hardware_test(struct hotplug_slot *hotplug_slot, u32 value)
507
502
 {
508
-	struct slot *slot = hotplug_slot->private;
503
+	struct slot *slot = to_slot(hotplug_slot);
509
504
 	struct controller *ctrl = slot->ctrl;
510
505
 
511
506
 	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
..
..
@@ -516,7 +511,7 @@
516
511
 
517
512
 static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
518
513
 {
519
-	struct slot *slot = hotplug_slot->private;
514
+	struct slot *slot = to_slot(hotplug_slot);
520
515
 	struct controller *ctrl = slot->ctrl;
521
516
 
522
517
 	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
..
..
@@ -527,7 +522,7 @@
527
522
 
528
523
 static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
529
524
 {
530
-	struct slot *slot = hotplug_slot->private;
525
+	struct slot *slot = to_slot(hotplug_slot);
531
526
 	struct controller *ctrl = slot->ctrl;
532
527
 
533
528
 	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
..
..
@@ -538,7 +533,7 @@
538
533
 
539
534
 static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
540
535
 {
541
-	struct slot *slot = hotplug_slot->private;
536
+	struct slot *slot = to_slot(hotplug_slot);
542
537
 	struct controller *ctrl = slot->ctrl;
543
538
 
544
539
 	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
..
..
@@ -550,7 +545,7 @@
550
545
 
551
546
 static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
552
547
 {
553
-	struct slot *slot = hotplug_slot->private;
548
+	struct slot *slot = to_slot(hotplug_slot);
554
549
 	struct controller *ctrl = slot->ctrl;
555
550
 
556
551
 	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
..
..
@@ -560,7 +555,7 @@
560
555
 	return 0;
561
556
 }
562
557
 
563
-static struct hotplug_slot_ops cpqphp_hotplug_slot_ops = {
558
+static const struct hotplug_slot_ops cpqphp_hotplug_slot_ops = {
564
559
 	.set_attention_status =	set_attention_status,
565
560
 	.enable_slot =		process_SI,
566
561
 	.disable_slot =		process_SS,
..
..
@@ -578,8 +573,6 @@
578
573
 			void __iomem *smbios_table)
579
574
 {
580
575
 	struct slot *slot;
581
-	struct hotplug_slot *hotplug_slot;
582
-	struct hotplug_slot_info *hotplug_slot_info;
583
576
 	struct pci_bus *bus = ctrl->pci_bus;
584
577
 	u8 number_of_slots;
585
578
 	u8 slot_device;
..
..
@@ -604,22 +597,6 @@
604
597
 			result = -ENOMEM;
605
598
 			goto error;
606
599
 		}
607
-
608
-		slot->hotplug_slot = kzalloc(sizeof(*(slot->hotplug_slot)),
609
-						GFP_KERNEL);
610
-		if (!slot->hotplug_slot) {
611
-			result = -ENOMEM;
612
-			goto error_slot;
613
-		}
614
-		hotplug_slot = slot->hotplug_slot;
615
-
616
-		hotplug_slot->info = kzalloc(sizeof(*(hotplug_slot->info)),
617
-							GFP_KERNEL);
618
-		if (!hotplug_slot->info) {
619
-			result = -ENOMEM;
620
-			goto error_hpslot;
621
-		}
622
-		hotplug_slot_info = hotplug_slot->info;
623
600
 
624
601
 		slot->ctrl = ctrl;
625
602
 		slot->bus = ctrl->bus;
..
..
@@ -669,29 +646,20 @@
669
646
 			((read_slot_enable(ctrl) << 2) >> ctrl_slot) & 0x04;
670
647
 
671
648
 		/* register this slot with the hotplug pci core */
672
-		hotplug_slot->private = slot;
673
649
 		snprintf(name, SLOT_NAME_SIZE, "%u", slot->number);
674
-		hotplug_slot->ops = &cpqphp_hotplug_slot_ops;
675
-
676
-		hotplug_slot_info->power_status = get_slot_enabled(ctrl, slot);
677
-		hotplug_slot_info->attention_status =
678
-			cpq_get_attention_status(ctrl, slot);
679
-		hotplug_slot_info->latch_status =
680
-			cpq_get_latch_status(ctrl, slot);
681
-		hotplug_slot_info->adapter_status =
682
-			get_presence_status(ctrl, slot);
650
+		slot->hotplug_slot.ops = &cpqphp_hotplug_slot_ops;
683
651
 
684
652
 		dbg("registering bus %d, dev %d, number %d, ctrl->slot_device_offset %d, slot %d\n",
685
653
 				slot->bus, slot->device,
686
654
 				slot->number, ctrl->slot_device_offset,
687
655
 				slot_number);
688
-		result = pci_hp_register(hotplug_slot,
656
+		result = pci_hp_register(&slot->hotplug_slot,
689
657
 					 ctrl->pci_dev->bus,
690
658
 					 slot->device,
691
659
 					 name);
692
660
 		if (result) {
693
661
 			err("pci_hp_register failed with error %d\n", result);
694
-			goto error_info;
662
+			goto error_slot;
695
663
 		}
696
664
 
697
665
 		slot->next = ctrl->slot;
..
..
@@ -703,10 +671,6 @@
703
671
 	}
704
672
 
705
673
 	return 0;
706
-error_info:
707
-	kfree(hotplug_slot_info);
708
-error_hpslot:
709
-	kfree(hotplug_slot);
710
674
 error_slot:
711
675
 	kfree(slot);
712
676
 error: