{
int ret = 0;
unsigned long val;
- struct pci_dev *pdev = to_pci_dev(dev);
if (strict_strtoul(buf, 0, &val) < 0)
return -EINVAL;
- if (pci_is_root_bus(pdev->bus))
- return -EBUSY;
-
/* An attribute cannot be unregistered by one of its own methods,
* so we have to use this roundabout approach.
*/
/**
* pci_read_legacy_io - read byte(s) from legacy I/O port space
* @kobj: kobject corresponding to file to read from
+ * @bin_attr: struct bin_attribute for this file
* @buf: buffer to store results
* @off: offset into legacy I/O port space
* @count: number of bytes to read
/**
* pci_write_legacy_io - write byte(s) to legacy I/O port space
* @kobj: kobject corresponding to file to read from
+ * @bin_attr: struct bin_attribute for this file
* @buf: buffer containing value to be written
* @off: offset into legacy I/O port space
* @count: number of bytes to write
/**
* pci_remove_resource_files - cleanup resource files
- * @dev: dev to cleanup
+ * @pdev: dev to cleanup
*
- * If we created resource files for @dev, remove them from sysfs and
+ * If we created resource files for @pdev, remove them from sysfs and
* free their resources.
*/
static void
/**
* pci_create_resource_files - create resource files in sysfs for @dev
- * @dev: dev in question
+ * @pdev: dev in question
*
- * Walk the resources in @dev creating files for each resource available.
+ * Walk the resources in @pdev creating files for each resource available.
*/
static int pci_create_resource_files(struct pci_dev *pdev)
{
/**
* pci_write_rom - used to enable access to the PCI ROM display
* @kobj: kernel object handle
+ * @bin_attr: struct bin_attribute for this file
* @buf: user input
* @off: file offset
* @count: number of byte in input
/**
* pci_read_rom - read a PCI ROM
* @kobj: kernel object handle
+ * @bin_attr: struct bin_attribute for this file
* @buf: where to put the data we read from the ROM
* @off: file offset
* @count: number of bytes to read
return 0;
}
+static ssize_t reset_store(struct device *dev,
+ struct device_attribute *attr, const char *buf,
+ size_t count)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ unsigned long val;
+ ssize_t result = strict_strtoul(buf, 0, &val);
+
+ if (result < 0)
+ return result;
+
+ if (val != 1)
+ return -EINVAL;
+ return pci_reset_function(pdev);
+}
+
+static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_store);
+
static int pci_create_capabilities_sysfs(struct pci_dev *dev)
{
int retval;
/* Active State Power Management */
pcie_aspm_create_sysfs_dev_files(dev);
+ if (!pci_probe_reset_function(dev)) {
+ retval = device_create_file(&dev->dev, &reset_attr);
+ if (retval)
+ goto error;
+ dev->reset_fn = 1;
+ }
return 0;
+
+error:
+ pcie_aspm_remove_sysfs_dev_files(dev);
+ if (dev->vpd && dev->vpd->attr) {
+ sysfs_remove_bin_file(&dev->dev.kobj, dev->vpd->attr);
+ kfree(dev->vpd->attr);
+ }
+
+ return retval;
}
int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
}
pcie_aspm_remove_sysfs_dev_files(dev);
+ if (dev->reset_fn) {
+ device_remove_file(&dev->dev, &reset_attr);
+ dev->reset_fn = 0;
+ }
}
/**