diff options
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index d46860898e1..9407aabc77a 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -22,6 +22,7 @@ #include <linux/interrupt.h> #include <linux/device.h> #include <linux/pm_runtime.h> +#include <linux/pci_hotplug.h> #include <asm-generic/pci-bridge.h> #include <asm/setup.h> #include "pci.h" @@ -3256,6 +3257,35 @@ static int pci_parent_bus_reset(struct pci_dev *dev, int probe) return 0; } +static int pci_reset_hotplug_slot(struct hotplug_slot *hotplug, int probe) +{ + int rc = -ENOTTY; + + if (!hotplug || !try_module_get(hotplug->ops->owner)) + return rc; + + if (hotplug->ops->reset_slot) + rc = hotplug->ops->reset_slot(hotplug, probe); + + module_put(hotplug->ops->owner); + + return rc; +} + +static int pci_dev_reset_slot_function(struct pci_dev *dev, int probe) +{ + struct pci_dev *pdev; + + if (dev->subordinate || !dev->slot) + return -ENOTTY; + + list_for_each_entry(pdev, &dev->bus->devices, bus_list) + if (pdev != dev && pdev->slot == dev->slot) + return -ENOTTY; + + return pci_reset_hotplug_slot(dev->slot->hotplug, probe); +} + static int __pci_dev_reset(struct pci_dev *dev, int probe) { int rc; @@ -3278,6 +3308,10 @@ static int __pci_dev_reset(struct pci_dev *dev, int probe) if (rc != -ENOTTY) goto done; + rc = pci_dev_reset_slot_function(dev, probe); + if (rc != -ENOTTY) + goto done; + rc = pci_parent_bus_reset(dev, probe); done: return rc; |