1 files changed, 37 insertions, 0 deletions

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 85ebd02a64a7..0f6382f090ee 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -916,6 +916,24 @@ int __attribute__ ((weak)) pcibios_add_platform_entries(struct pci_dev *dev)
         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;
@@ -943,7 +961,22 @@ static int pci_create_capabilities_sysfs(struct pci_dev *dev)
         /* 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)
@@ -1037,6 +1070,10 @@ static void pci_remove_capabilities_sysfs(struct pci_dev *dev)
         }
 
         pcie_aspm_remove_sysfs_dev_files(dev);
+        if (dev->reset_fn) {
+                device_remove_file(&dev->dev, &reset_attr);
+                dev->reset_fn = 0;
+        }
 }
 
 /**