add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/pci/access.c
..
..
@@ -33,7 +33,7 @@
33
33
 #endif
34
34
 
35
35
 #define PCI_OP_READ(size, type, len) \
36
-int pci_bus_read_config_##size \
36
+int noinline pci_bus_read_config_##size \
37
37
 	(struct pci_bus *bus, unsigned int devfn, int pos, type *value)	\
38
38
 {									\
39
39
 	int res;							\
..
..
@@ -48,7 +48,7 @@
48
48
 }
49
49
 
50
50
 #define PCI_OP_WRITE(size, type, len) \
51
-int pci_bus_write_config_##size \
51
+int noinline pci_bus_write_config_##size \
52
52
 	(struct pci_bus *bus, unsigned int devfn, int pos, type value)	\
53
53
 {									\
54
54
 	int res;							\
..
..
@@ -332,15 +332,6 @@
332
332
 	return pcie_caps_reg(dev) & PCI_EXP_FLAGS_VERS;
333
333
 }
334
334
 
335
-static bool pcie_downstream_port(const struct pci_dev *dev)
336
-{
337
-	int type = pci_pcie_type(dev);
338
-
339
-	return type == PCI_EXP_TYPE_ROOT_PORT ||
340
-	       type == PCI_EXP_TYPE_DOWNSTREAM ||
341
-	       type == PCI_EXP_TYPE_PCIE_BRIDGE;
342
-}
343
-
344
335
 bool pcie_cap_has_lnkctl(const struct pci_dev *dev)
345
336
 {
346
337
 	int type = pci_pcie_type(dev);
..
..
@@ -360,7 +351,7 @@
360
351
 	       pcie_caps_reg(dev) & PCI_EXP_FLAGS_SLOT;
361
352
 }
362
353
 
363
-static inline bool pcie_cap_has_rtctl(const struct pci_dev *dev)
354
+bool pcie_cap_has_rtctl(const struct pci_dev *dev)
364
355
 {
365
356
 	int type = pci_pcie_type(dev);
366
357
 
..
..
@@ -414,7 +405,7 @@
414
405
 
415
406
 	*val = 0;
416
407
 	if (pos & 1)
417
-		return -EINVAL;
408
+		return PCIBIOS_BAD_REGISTER_NUMBER;
418
409
 
419
410
 	if (pcie_capability_reg_implemented(dev, pos)) {
420
411
 		ret = pci_read_config_word(dev, pci_pcie_cap(dev) + pos, val);
..
..
@@ -449,7 +440,7 @@
449
440
 
450
441
 	*val = 0;
451
442
 	if (pos & 3)
452
-		return -EINVAL;
443
+		return PCIBIOS_BAD_REGISTER_NUMBER;
453
444
 
454
445
 	if (pcie_capability_reg_implemented(dev, pos)) {
455
446
 		ret = pci_read_config_dword(dev, pci_pcie_cap(dev) + pos, val);
..
..
@@ -474,7 +465,7 @@
474
465
 int pcie_capability_write_word(struct pci_dev *dev, int pos, u16 val)
475
466
 {
476
467
 	if (pos & 1)
477
-		return -EINVAL;
468
+		return PCIBIOS_BAD_REGISTER_NUMBER;
478
469
 
479
470
 	if (!pcie_capability_reg_implemented(dev, pos))
480
471
 		return 0;
..
..
@@ -486,7 +477,7 @@
486
477
 int pcie_capability_write_dword(struct pci_dev *dev, int pos, u32 val)
487
478
 {
488
479
 	if (pos & 3)
489
-		return -EINVAL;
480
+		return PCIBIOS_BAD_REGISTER_NUMBER;
490
481
 
491
482
 	if (!pcie_capability_reg_implemented(dev, pos))
492
483
 		return 0;