diff options
Diffstat (limited to 'drivers/pci/hotplug/pciehp_hpc.c')
| -rw-r--r-- | drivers/pci/hotplug/pciehp_hpc.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index 9c6a18da1af5..6951a0123e39 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -595,11 +595,16 @@ static irqreturn_t pciehp_ist(int irq, void *dev_id) } /* + * Disable requests have higher priority than Presence Detect Changed + * or Data Link Layer State Changed events. + * * Check Link Status Changed at higher precedence than Presence * Detect Changed. The PDS value may be set to "card present" from * out-of-band detection, which may be in conflict with a Link Down. */ - if (events & PCI_EXP_SLTSTA_DLLSC) + if (events & DISABLE_SLOT) + pciehp_handle_disable_request(slot); + else if (events & PCI_EXP_SLTSTA_DLLSC) pciehp_handle_link_change(slot); else if (events & PCI_EXP_SLTSTA_PDC) pciehp_handle_presence_change(slot); @@ -612,6 +617,7 @@ static irqreturn_t pciehp_ist(int irq, void *dev_id) pciehp_green_led_off(slot); } + wake_up(&ctrl->requester); return IRQ_HANDLED; } @@ -625,8 +631,9 @@ static int pciehp_poll(void *data) if (kthread_should_park()) kthread_parkme(); - /* poll for interrupt events */ - while (pciehp_isr(IRQ_NOTCONNECTED, ctrl) == IRQ_WAKE_THREAD) + /* poll for interrupt events or user requests */ + while (pciehp_isr(IRQ_NOTCONNECTED, ctrl) == IRQ_WAKE_THREAD || + atomic_read(&ctrl->pending_events)) pciehp_ist(IRQ_NOTCONNECTED, ctrl); if (pciehp_poll_time <= 0 || pciehp_poll_time > 60) @@ -830,6 +837,7 @@ struct controller *pcie_init(struct pcie_device *dev) ctrl->slot_cap = slot_cap; mutex_init(&ctrl->ctrl_lock); + init_waitqueue_head(&ctrl->requester); init_waitqueue_head(&ctrl->queue); dbg_ctrl(ctrl); |