diff options
| -rw-r--r-- | drivers/pci/pci-sysfs.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 94d1cb8..c91e6c1 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -352,20 +352,32 @@ static struct device_attribute dev_rescan_attr = __ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, dev_rescan_store); +static void remove_callback(struct device *dev) +{ + struct pci_dev *pdev = to_pci_dev(dev); + + mutex_lock(&pci_remove_rescan_mutex); + pci_stop_and_remove_bus_device(pdev); + mutex_unlock(&pci_remove_rescan_mutex); +} + static ssize_t -remove_store(struct device *dev, struct device_attribute *attr, +remove_store(struct device *dev, struct device_attribute *dummy, const char *buf, size_t count) { + int ret = 0; unsigned long val; if (kstrtoul(buf, 0, &val) < 0) return -EINVAL; - if (val && device_remove_file_self(dev, attr)) { - mutex_lock(&pci_remove_rescan_mutex); - pci_stop_and_remove_bus_device(to_pci_dev(dev)); - mutex_unlock(&pci_remove_rescan_mutex); - } + /* An attribute cannot be unregistered by one of its own methods, + * so we have to use this roundabout approach. + */ + if (val) + ret = device_schedule_callback(dev, remove_callback); + if (ret) + count = ret; return count; } static struct device_attribute dev_remove_attr = __ATTR(remove, |
