2 * drivers/pci/pci-sysfs.c
4 * (C) Copyright 2002-2004 Greg Kroah-Hartman <greg@kroah.com>
5 * (C) Copyright 2002-2004 IBM Corp.
6 * (C) Copyright 2003 Matthew Wilcox
7 * (C) Copyright 2003 Hewlett-Packard
8 * (C) Copyright 2004 Jon Smirl <jonsmirl@yahoo.com>
9 * (C) Copyright 2004 Silicon Graphics, Inc. Jesse Barnes <jbarnes@sgi.com>
11 * File attributes for PCI devices
13 * Modeled after usb's driverfs.c
18 #include <linux/kernel.h>
19 #include <linux/sched.h>
20 #include <linux/pci.h>
21 #include <linux/stat.h>
22 #include <linux/topology.h>
24 #include <linux/capability.h>
25 #include <linux/pci-aspm.h>
28 static int sysfs_initialized
; /* = 0 */
30 /* show configuration fields */
31 #define pci_config_attr(field, format_string) \
33 field##_show(struct device *dev, struct device_attribute *attr, char *buf) \
35 struct pci_dev *pdev; \
37 pdev = to_pci_dev (dev); \
38 return sprintf (buf, format_string, pdev->field); \
41 pci_config_attr(vendor
, "0x%04x\n");
42 pci_config_attr(device
, "0x%04x\n");
43 pci_config_attr(subsystem_vendor
, "0x%04x\n");
44 pci_config_attr(subsystem_device
, "0x%04x\n");
45 pci_config_attr(class, "0x%06x\n");
46 pci_config_attr(irq
, "%u\n");
48 static ssize_t
broken_parity_status_show(struct device
*dev
,
49 struct device_attribute
*attr
,
52 struct pci_dev
*pdev
= to_pci_dev(dev
);
53 return sprintf (buf
, "%u\n", pdev
->broken_parity_status
);
56 static ssize_t
broken_parity_status_store(struct device
*dev
,
57 struct device_attribute
*attr
,
58 const char *buf
, size_t count
)
60 struct pci_dev
*pdev
= to_pci_dev(dev
);
61 ssize_t consumed
= -EINVAL
;
63 if ((count
> 0) && (*buf
== '0' || *buf
== '1')) {
64 pdev
->broken_parity_status
= *buf
== '1' ? 1 : 0;
70 static ssize_t
local_cpus_show(struct device
*dev
,
71 struct device_attribute
*attr
, char *buf
)
76 mask
= pcibus_to_cpumask(to_pci_dev(dev
)->bus
);
77 len
= cpumask_scnprintf(buf
, PAGE_SIZE
-2, mask
);
84 static ssize_t
local_cpulist_show(struct device
*dev
,
85 struct device_attribute
*attr
, char *buf
)
90 mask
= pcibus_to_cpumask(to_pci_dev(dev
)->bus
);
91 len
= cpulist_scnprintf(buf
, PAGE_SIZE
-2, mask
);
99 resource_show(struct device
* dev
, struct device_attribute
*attr
, char * buf
)
101 struct pci_dev
* pci_dev
= to_pci_dev(dev
);
105 resource_size_t start
, end
;
107 if (pci_dev
->subordinate
)
108 max
= DEVICE_COUNT_RESOURCE
;
110 for (i
= 0; i
< max
; i
++) {
111 struct resource
*res
= &pci_dev
->resource
[i
];
112 pci_resource_to_user(pci_dev
, i
, res
, &start
, &end
);
113 str
+= sprintf(str
,"0x%016llx 0x%016llx 0x%016llx\n",
114 (unsigned long long)start
,
115 (unsigned long long)end
,
116 (unsigned long long)res
->flags
);
121 static ssize_t
modalias_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
123 struct pci_dev
*pci_dev
= to_pci_dev(dev
);
125 return sprintf(buf
, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x\n",
126 pci_dev
->vendor
, pci_dev
->device
,
127 pci_dev
->subsystem_vendor
, pci_dev
->subsystem_device
,
128 (u8
)(pci_dev
->class >> 16), (u8
)(pci_dev
->class >> 8),
129 (u8
)(pci_dev
->class));
132 static ssize_t
is_enabled_store(struct device
*dev
,
133 struct device_attribute
*attr
, const char *buf
,
136 ssize_t result
= -EINVAL
;
137 struct pci_dev
*pdev
= to_pci_dev(dev
);
139 /* this can crash the machine when done on the "wrong" device */
140 if (!capable(CAP_SYS_ADMIN
))
144 if (atomic_read(&pdev
->enable_cnt
) != 0)
145 pci_disable_device(pdev
);
148 } else if (*buf
== '1')
149 result
= pci_enable_device(pdev
);
151 return result
< 0 ? result
: count
;
154 static ssize_t
is_enabled_show(struct device
*dev
,
155 struct device_attribute
*attr
, char *buf
)
157 struct pci_dev
*pdev
;
159 pdev
= to_pci_dev (dev
);
160 return sprintf (buf
, "%u\n", atomic_read(&pdev
->enable_cnt
));
165 numa_node_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
167 return sprintf (buf
, "%d\n", dev
->numa_node
);
172 msi_bus_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
174 struct pci_dev
*pdev
= to_pci_dev(dev
);
176 if (!pdev
->subordinate
)
179 return sprintf (buf
, "%u\n",
180 !(pdev
->subordinate
->bus_flags
& PCI_BUS_FLAGS_NO_MSI
));
184 msi_bus_store(struct device
*dev
, struct device_attribute
*attr
,
185 const char *buf
, size_t count
)
187 struct pci_dev
*pdev
= to_pci_dev(dev
);
189 /* bad things may happen if the no_msi flag is changed
190 * while some drivers are loaded */
191 if (!capable(CAP_SYS_ADMIN
))
194 if (!pdev
->subordinate
)
198 pdev
->subordinate
->bus_flags
|= PCI_BUS_FLAGS_NO_MSI
;
199 dev_warn(&pdev
->dev
, "forced subordinate bus to not support MSI,"
200 " bad things could happen.\n");
204 pdev
->subordinate
->bus_flags
&= ~PCI_BUS_FLAGS_NO_MSI
;
205 dev_warn(&pdev
->dev
, "forced subordinate bus to support MSI,"
206 " bad things could happen.\n");
212 struct device_attribute pci_dev_attrs
[] = {
216 __ATTR_RO(subsystem_vendor
),
217 __ATTR_RO(subsystem_device
),
220 __ATTR_RO(local_cpus
),
221 __ATTR_RO(local_cpulist
),
224 __ATTR_RO(numa_node
),
226 __ATTR(enable
, 0600, is_enabled_show
, is_enabled_store
),
227 __ATTR(broken_parity_status
,(S_IRUGO
|S_IWUSR
),
228 broken_parity_status_show
,broken_parity_status_store
),
229 __ATTR(msi_bus
, 0644, msi_bus_show
, msi_bus_store
),
234 pci_read_config(struct kobject
*kobj
, struct bin_attribute
*bin_attr
,
235 char *buf
, loff_t off
, size_t count
)
237 struct pci_dev
*dev
= to_pci_dev(container_of(kobj
,struct device
,kobj
));
238 unsigned int size
= 64;
239 loff_t init_off
= off
;
240 u8
*data
= (u8
*) buf
;
242 /* Several chips lock up trying to read undefined config space */
243 if (capable(CAP_SYS_ADMIN
)) {
244 size
= dev
->cfg_size
;
245 } else if (dev
->hdr_type
== PCI_HEADER_TYPE_CARDBUS
) {
251 if (off
+ count
> size
) {
258 if ((off
& 1) && size
) {
260 pci_user_read_config_byte(dev
, off
, &val
);
261 data
[off
- init_off
] = val
;
266 if ((off
& 3) && size
> 2) {
268 pci_user_read_config_word(dev
, off
, &val
);
269 data
[off
- init_off
] = val
& 0xff;
270 data
[off
- init_off
+ 1] = (val
>> 8) & 0xff;
277 pci_user_read_config_dword(dev
, off
, &val
);
278 data
[off
- init_off
] = val
& 0xff;
279 data
[off
- init_off
+ 1] = (val
>> 8) & 0xff;
280 data
[off
- init_off
+ 2] = (val
>> 16) & 0xff;
281 data
[off
- init_off
+ 3] = (val
>> 24) & 0xff;
288 pci_user_read_config_word(dev
, off
, &val
);
289 data
[off
- init_off
] = val
& 0xff;
290 data
[off
- init_off
+ 1] = (val
>> 8) & 0xff;
297 pci_user_read_config_byte(dev
, off
, &val
);
298 data
[off
- init_off
] = val
;
307 pci_write_config(struct kobject
*kobj
, struct bin_attribute
*bin_attr
,
308 char *buf
, loff_t off
, size_t count
)
310 struct pci_dev
*dev
= to_pci_dev(container_of(kobj
,struct device
,kobj
));
311 unsigned int size
= count
;
312 loff_t init_off
= off
;
313 u8
*data
= (u8
*) buf
;
315 if (off
> dev
->cfg_size
)
317 if (off
+ count
> dev
->cfg_size
) {
318 size
= dev
->cfg_size
- off
;
322 if ((off
& 1) && size
) {
323 pci_user_write_config_byte(dev
, off
, data
[off
- init_off
]);
328 if ((off
& 3) && size
> 2) {
329 u16 val
= data
[off
- init_off
];
330 val
|= (u16
) data
[off
- init_off
+ 1] << 8;
331 pci_user_write_config_word(dev
, off
, val
);
337 u32 val
= data
[off
- init_off
];
338 val
|= (u32
) data
[off
- init_off
+ 1] << 8;
339 val
|= (u32
) data
[off
- init_off
+ 2] << 16;
340 val
|= (u32
) data
[off
- init_off
+ 3] << 24;
341 pci_user_write_config_dword(dev
, off
, val
);
347 u16 val
= data
[off
- init_off
];
348 val
|= (u16
) data
[off
- init_off
+ 1] << 8;
349 pci_user_write_config_word(dev
, off
, val
);
355 pci_user_write_config_byte(dev
, off
, data
[off
- init_off
]);
364 pci_read_vpd(struct kobject
*kobj
, struct bin_attribute
*bin_attr
,
365 char *buf
, loff_t off
, size_t count
)
367 struct pci_dev
*dev
=
368 to_pci_dev(container_of(kobj
, struct device
, kobj
));
372 if (off
> bin_attr
->size
)
374 else if (count
> bin_attr
->size
- off
)
375 count
= bin_attr
->size
- off
;
379 ret
= dev
->vpd
->ops
->read(dev
, off
, end
- off
, buf
);
390 pci_write_vpd(struct kobject
*kobj
, struct bin_attribute
*bin_attr
,
391 char *buf
, loff_t off
, size_t count
)
393 struct pci_dev
*dev
=
394 to_pci_dev(container_of(kobj
, struct device
, kobj
));
398 if (off
> bin_attr
->size
)
400 else if (count
> bin_attr
->size
- off
)
401 count
= bin_attr
->size
- off
;
405 ret
= dev
->vpd
->ops
->write(dev
, off
, end
- off
, buf
);
415 #ifdef HAVE_PCI_LEGACY
417 * pci_read_legacy_io - read byte(s) from legacy I/O port space
418 * @kobj: kobject corresponding to file to read from
419 * @buf: buffer to store results
420 * @off: offset into legacy I/O port space
421 * @count: number of bytes to read
423 * Reads 1, 2, or 4 bytes from legacy I/O port space using an arch specific
424 * callback routine (pci_legacy_read).
427 pci_read_legacy_io(struct kobject
*kobj
, struct bin_attribute
*bin_attr
,
428 char *buf
, loff_t off
, size_t count
)
430 struct pci_bus
*bus
= to_pci_bus(container_of(kobj
,
434 /* Only support 1, 2 or 4 byte accesses */
435 if (count
!= 1 && count
!= 2 && count
!= 4)
438 return pci_legacy_read(bus
, off
, (u32
*)buf
, count
);
442 * pci_write_legacy_io - write byte(s) to legacy I/O port space
443 * @kobj: kobject corresponding to file to read from
444 * @buf: buffer containing value to be written
445 * @off: offset into legacy I/O port space
446 * @count: number of bytes to write
448 * Writes 1, 2, or 4 bytes from legacy I/O port space using an arch specific
449 * callback routine (pci_legacy_write).
452 pci_write_legacy_io(struct kobject
*kobj
, struct bin_attribute
*bin_attr
,
453 char *buf
, loff_t off
, size_t count
)
455 struct pci_bus
*bus
= to_pci_bus(container_of(kobj
,
458 /* Only support 1, 2 or 4 byte accesses */
459 if (count
!= 1 && count
!= 2 && count
!= 4)
462 return pci_legacy_write(bus
, off
, *(u32
*)buf
, count
);
466 * pci_mmap_legacy_mem - map legacy PCI memory into user memory space
467 * @kobj: kobject corresponding to device to be mapped
468 * @attr: struct bin_attribute for this file
469 * @vma: struct vm_area_struct passed to mmap
471 * Uses an arch specific callback, pci_mmap_legacy_page_range, to mmap
472 * legacy memory space (first meg of bus space) into application virtual
476 pci_mmap_legacy_mem(struct kobject
*kobj
, struct bin_attribute
*attr
,
477 struct vm_area_struct
*vma
)
479 struct pci_bus
*bus
= to_pci_bus(container_of(kobj
,
483 return pci_mmap_legacy_page_range(bus
, vma
);
485 #endif /* HAVE_PCI_LEGACY */
489 static int pci_mmap_fits(struct pci_dev
*pdev
, int resno
, struct vm_area_struct
*vma
)
491 unsigned long nr
, start
, size
;
493 nr
= (vma
->vm_end
- vma
->vm_start
) >> PAGE_SHIFT
;
494 start
= vma
->vm_pgoff
;
495 size
= pci_resource_len(pdev
, resno
) >> PAGE_SHIFT
;
496 if (start
< size
&& size
- start
>= nr
)
498 WARN(1, "process \"%s\" tried to map 0x%08lx-0x%08lx on %s BAR %d (size 0x%08lx)\n",
499 current
->comm
, start
, start
+nr
, pci_name(pdev
), resno
, size
);
504 * pci_mmap_resource - map a PCI resource into user memory space
505 * @kobj: kobject for mapping
506 * @attr: struct bin_attribute for the file being mapped
507 * @vma: struct vm_area_struct passed into the mmap
508 * @write_combine: 1 for write_combine mapping
510 * Use the regular PCI mapping routines to map a PCI resource into userspace.
513 pci_mmap_resource(struct kobject
*kobj
, struct bin_attribute
*attr
,
514 struct vm_area_struct
*vma
, int write_combine
)
516 struct pci_dev
*pdev
= to_pci_dev(container_of(kobj
,
517 struct device
, kobj
));
518 struct resource
*res
= (struct resource
*)attr
->private;
519 enum pci_mmap_state mmap_type
;
520 resource_size_t start
, end
;
523 for (i
= 0; i
< PCI_ROM_RESOURCE
; i
++)
524 if (res
== &pdev
->resource
[i
])
526 if (i
>= PCI_ROM_RESOURCE
)
529 if (!pci_mmap_fits(pdev
, i
, vma
))
532 /* pci_mmap_page_range() expects the same kind of entry as coming
533 * from /proc/bus/pci/ which is a "user visible" value. If this is
534 * different from the resource itself, arch will do necessary fixup.
536 pci_resource_to_user(pdev
, i
, res
, &start
, &end
);
537 vma
->vm_pgoff
+= start
>> PAGE_SHIFT
;
538 mmap_type
= res
->flags
& IORESOURCE_MEM
? pci_mmap_mem
: pci_mmap_io
;
540 return pci_mmap_page_range(pdev
, vma
, mmap_type
, write_combine
);
544 pci_mmap_resource_uc(struct kobject
*kobj
, struct bin_attribute
*attr
,
545 struct vm_area_struct
*vma
)
547 return pci_mmap_resource(kobj
, attr
, vma
, 0);
551 pci_mmap_resource_wc(struct kobject
*kobj
, struct bin_attribute
*attr
,
552 struct vm_area_struct
*vma
)
554 return pci_mmap_resource(kobj
, attr
, vma
, 1);
558 * pci_remove_resource_files - cleanup resource files
559 * @dev: dev to cleanup
561 * If we created resource files for @dev, remove them from sysfs and
562 * free their resources.
565 pci_remove_resource_files(struct pci_dev
*pdev
)
569 for (i
= 0; i
< PCI_ROM_RESOURCE
; i
++) {
570 struct bin_attribute
*res_attr
;
572 res_attr
= pdev
->res_attr
[i
];
574 sysfs_remove_bin_file(&pdev
->dev
.kobj
, res_attr
);
578 res_attr
= pdev
->res_attr_wc
[i
];
580 sysfs_remove_bin_file(&pdev
->dev
.kobj
, res_attr
);
586 static int pci_create_attr(struct pci_dev
*pdev
, int num
, int write_combine
)
588 /* allocate attribute structure, piggyback attribute name */
589 int name_len
= write_combine
? 13 : 10;
590 struct bin_attribute
*res_attr
;
593 res_attr
= kzalloc(sizeof(*res_attr
) + name_len
, GFP_ATOMIC
);
595 char *res_attr_name
= (char *)(res_attr
+ 1);
598 pdev
->res_attr_wc
[num
] = res_attr
;
599 sprintf(res_attr_name
, "resource%d_wc", num
);
600 res_attr
->mmap
= pci_mmap_resource_wc
;
602 pdev
->res_attr
[num
] = res_attr
;
603 sprintf(res_attr_name
, "resource%d", num
);
604 res_attr
->mmap
= pci_mmap_resource_uc
;
606 res_attr
->attr
.name
= res_attr_name
;
607 res_attr
->attr
.mode
= S_IRUSR
| S_IWUSR
;
608 res_attr
->size
= pci_resource_len(pdev
, num
);
609 res_attr
->private = &pdev
->resource
[num
];
610 retval
= sysfs_create_bin_file(&pdev
->dev
.kobj
, res_attr
);
618 * pci_create_resource_files - create resource files in sysfs for @dev
619 * @dev: dev in question
621 * Walk the resources in @dev creating files for each resource available.
623 static int pci_create_resource_files(struct pci_dev
*pdev
)
628 /* Expose the PCI resources from this device as files */
629 for (i
= 0; i
< PCI_ROM_RESOURCE
; i
++) {
631 /* skip empty resources */
632 if (!pci_resource_len(pdev
, i
))
635 retval
= pci_create_attr(pdev
, i
, 0);
636 /* for prefetchable resources, create a WC mappable file */
637 if (!retval
&& pdev
->resource
[i
].flags
& IORESOURCE_PREFETCH
)
638 retval
= pci_create_attr(pdev
, i
, 1);
641 pci_remove_resource_files(pdev
);
647 #else /* !HAVE_PCI_MMAP */
648 static inline int pci_create_resource_files(struct pci_dev
*dev
) { return 0; }
649 static inline void pci_remove_resource_files(struct pci_dev
*dev
) { return; }
650 #endif /* HAVE_PCI_MMAP */
653 * pci_write_rom - used to enable access to the PCI ROM display
654 * @kobj: kernel object handle
657 * @count: number of byte in input
659 * writing anything except 0 enables it
662 pci_write_rom(struct kobject
*kobj
, struct bin_attribute
*bin_attr
,
663 char *buf
, loff_t off
, size_t count
)
665 struct pci_dev
*pdev
= to_pci_dev(container_of(kobj
, struct device
, kobj
));
667 if ((off
== 0) && (*buf
== '0') && (count
== 2))
668 pdev
->rom_attr_enabled
= 0;
670 pdev
->rom_attr_enabled
= 1;
676 * pci_read_rom - read a PCI ROM
677 * @kobj: kernel object handle
678 * @buf: where to put the data we read from the ROM
680 * @count: number of bytes to read
682 * Put @count bytes starting at @off into @buf from the ROM in the PCI
683 * device corresponding to @kobj.
686 pci_read_rom(struct kobject
*kobj
, struct bin_attribute
*bin_attr
,
687 char *buf
, loff_t off
, size_t count
)
689 struct pci_dev
*pdev
= to_pci_dev(container_of(kobj
, struct device
, kobj
));
693 if (!pdev
->rom_attr_enabled
)
696 rom
= pci_map_rom(pdev
, &size
); /* size starts out as PCI window size */
703 if (off
+ count
> size
)
706 memcpy_fromio(buf
, rom
+ off
, count
);
708 pci_unmap_rom(pdev
, rom
);
713 static struct bin_attribute pci_config_attr
= {
716 .mode
= S_IRUGO
| S_IWUSR
,
719 .read
= pci_read_config
,
720 .write
= pci_write_config
,
723 static struct bin_attribute pcie_config_attr
= {
726 .mode
= S_IRUGO
| S_IWUSR
,
729 .read
= pci_read_config
,
730 .write
= pci_write_config
,
733 int __attribute__ ((weak
)) pcibios_add_platform_entries(struct pci_dev
*dev
)
738 int __must_check
pci_create_sysfs_dev_files (struct pci_dev
*pdev
)
740 struct bin_attribute
*attr
= NULL
;
743 if (!sysfs_initialized
)
746 if (pdev
->cfg_size
< 4096)
747 retval
= sysfs_create_bin_file(&pdev
->dev
.kobj
, &pci_config_attr
);
749 retval
= sysfs_create_bin_file(&pdev
->dev
.kobj
, &pcie_config_attr
);
753 /* If the device has VPD, try to expose it in sysfs. */
755 attr
= kzalloc(sizeof(*attr
), GFP_ATOMIC
);
757 pdev
->vpd
->attr
= attr
;
758 attr
->size
= pdev
->vpd
->len
;
759 attr
->attr
.name
= "vpd";
760 attr
->attr
.mode
= S_IRUSR
| S_IWUSR
;
761 attr
->read
= pci_read_vpd
;
762 attr
->write
= pci_write_vpd
;
763 retval
= sysfs_create_bin_file(&pdev
->dev
.kobj
, attr
);
768 goto err_config_file
;
772 retval
= pci_create_resource_files(pdev
);
776 /* If the device has a ROM, try to expose it in sysfs. */
777 if (pci_resource_len(pdev
, PCI_ROM_RESOURCE
) ||
778 (pdev
->resource
[PCI_ROM_RESOURCE
].flags
& IORESOURCE_ROM_SHADOW
)) {
779 attr
= kzalloc(sizeof(*attr
), GFP_ATOMIC
);
781 pdev
->rom_attr
= attr
;
782 attr
->size
= pci_resource_len(pdev
, PCI_ROM_RESOURCE
);
783 attr
->attr
.name
= "rom";
784 attr
->attr
.mode
= S_IRUSR
;
785 attr
->read
= pci_read_rom
;
786 attr
->write
= pci_write_rom
;
787 retval
= sysfs_create_bin_file(&pdev
->dev
.kobj
, attr
);
792 goto err_resource_files
;
795 /* add platform-specific attributes */
796 if (pcibios_add_platform_entries(pdev
))
799 pcie_aspm_create_sysfs_dev_files(pdev
);
804 if (pci_resource_len(pdev
, PCI_ROM_RESOURCE
))
805 sysfs_remove_bin_file(&pdev
->dev
.kobj
, pdev
->rom_attr
);
807 kfree(pdev
->rom_attr
);
809 pci_remove_resource_files(pdev
);
812 sysfs_remove_bin_file(&pdev
->dev
.kobj
, pdev
->vpd
->attr
);
814 kfree(pdev
->vpd
->attr
);
817 if (pdev
->cfg_size
< 4096)
818 sysfs_remove_bin_file(&pdev
->dev
.kobj
, &pci_config_attr
);
820 sysfs_remove_bin_file(&pdev
->dev
.kobj
, &pcie_config_attr
);
826 * pci_remove_sysfs_dev_files - cleanup PCI specific sysfs files
827 * @pdev: device whose entries we should free
829 * Cleanup when @pdev is removed from sysfs.
831 void pci_remove_sysfs_dev_files(struct pci_dev
*pdev
)
833 if (!sysfs_initialized
)
836 pcie_aspm_remove_sysfs_dev_files(pdev
);
839 sysfs_remove_bin_file(&pdev
->dev
.kobj
, pdev
->vpd
->attr
);
840 kfree(pdev
->vpd
->attr
);
842 if (pdev
->cfg_size
< 4096)
843 sysfs_remove_bin_file(&pdev
->dev
.kobj
, &pci_config_attr
);
845 sysfs_remove_bin_file(&pdev
->dev
.kobj
, &pcie_config_attr
);
847 pci_remove_resource_files(pdev
);
849 if (pci_resource_len(pdev
, PCI_ROM_RESOURCE
)) {
850 if (pdev
->rom_attr
) {
851 sysfs_remove_bin_file(&pdev
->dev
.kobj
, pdev
->rom_attr
);
852 kfree(pdev
->rom_attr
);
857 static int __init
pci_sysfs_init(void)
859 struct pci_dev
*pdev
= NULL
;
862 sysfs_initialized
= 1;
863 for_each_pci_dev(pdev
) {
864 retval
= pci_create_sysfs_dev_files(pdev
);
874 late_initcall(pci_sysfs_init
);