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Date: Wed, 01 May 2013 12:43:14 -0600 From: Alex Williamson <alex.williamson@...hat.com> To: bhelgaas@...gle.com Cc: linux-kernel@...r.kernel.org Subject: [RFC PATCH 3/8] pci: Add pci_hp_reset_slot Provide an interface to get to hotplug controller reset_slot callback Signed-off-by: Alex Williamson <alex.williamson@...hat.com> --- drivers/pci/hotplug/pci_hotplug_core.c | 24 ++++++++++++++++++++++++ include/linux/pci_hotplug.h | 8 ++++++++ 2 files changed, 32 insertions(+) diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c index ec20f74..a63e9c3 100644 --- a/drivers/pci/hotplug/pci_hotplug_core.c +++ b/drivers/pci/hotplug/pci_hotplug_core.c @@ -528,6 +528,29 @@ int pci_hp_change_slot_info(struct hotplug_slot *hotplug, return 0; } +/** + * pci_hp_reset_slot - reset slot + * + * @hotplug: pointer to hotplug slot to reset + * @probe: reset slot (0) or just probe + * + * Returns 0 if successful, anything else for an error. + */ +int pci_hp_reset_slot(struct hotplug_slot *hotplug, int probe) +{ + int result = -ENOTTY; + + if (!hotplug || !try_module_get(hotplug->ops->owner)) + return result; + + if (hotplug->ops->reset_slot) + result = hotplug->ops->reset_slot(hotplug, probe); + + module_put(hotplug->ops->owner); + + return result; +} + static int __init pci_hotplug_init (void) { int result; @@ -561,3 +584,4 @@ MODULE_PARM_DESC(debug, "Debugging mode enabled or not"); EXPORT_SYMBOL_GPL(__pci_hp_register); EXPORT_SYMBOL_GPL(pci_hp_deregister); EXPORT_SYMBOL_GPL(pci_hp_change_slot_info); +EXPORT_SYMBOL_GPL(pci_hp_reset_slot); diff --git a/include/linux/pci_hotplug.h b/include/linux/pci_hotplug.h index bd32109..e59f797 100644 --- a/include/linux/pci_hotplug.h +++ b/include/linux/pci_hotplug.h @@ -135,6 +135,14 @@ int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *pbus, int nr, int pci_hp_deregister(struct hotplug_slot *slot); int __must_check pci_hp_change_slot_info(struct hotplug_slot *slot, struct hotplug_slot_info *info); +#ifdef CONFIG_HOTPLUG_PCI +int pci_hp_reset_slot(struct hotplug_slot *slot, int probe); +#else +static inline int pci_hp_reset_slot(struct hotplug_slot *slot, int probe) +{ + return -ENOTTY; +} +#endif /* use a define to avoid include chaining to get THIS_MODULE & friends */ #define pci_hp_register(slot, pbus, devnr, name) \ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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