Abstract the poll loop into an 'events pending' check and a 'handle
events' method in order to allow another driver to call the polling
loop.
Signed-off-by: Jonathan Derrick <jonathan.derrick@xxxxxxxxx>
---
drivers/pci/hotplug/pciehp.h | 2 ++
drivers/pci/hotplug/pciehp_hpc.c | 16 +++++++++++++---
2 files changed, 15 insertions(+), 3 deletions(-)
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index e0a614acee05..e221f5d12ad5 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -157,6 +157,8 @@ struct controller {
#define NO_CMD_CMPL(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_NCCS)
#define PSN(ctrl) (((ctrl)->slot_cap & PCI_EXP_SLTCAP_PSN) >> 19)
+bool pciehp_events_pending(struct controller *ctrl);
+void pciehp_handle_events(struct controller *ctrl);
void pciehp_request(struct controller *ctrl, int action);
void pciehp_handle_button_press(struct controller *ctrl);
void pciehp_handle_disable_request(struct controller *ctrl);
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 040ae076ec0e..f711448e0a70 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -764,6 +764,17 @@ static irqreturn_t pciehp_ist(int irq, void *dev_id)
return ret;
}
+bool pciehp_events_pending(struct controller *ctrl)
+{
+ return pciehp_isr(IRQ_NOTCONNECTED, ctrl) == IRQ_WAKE_THREAD ||
+ atomic_read(&ctrl->pending_events);
+}
+
+void pciehp_handle_events(struct controller *ctrl)
+{
+ pciehp_ist(IRQ_NOTCONNECTED, ctrl);
+}
+
static int pciehp_poll(void *data)
{
struct controller *ctrl = data;
@@ -772,9 +783,8 @@ static int pciehp_poll(void *data)
while (!kthread_should_stop()) {
/* 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);
+ while (pciehp_events_pending(ctrl))
+ pciehp_handle_events(ctrl);
if (pciehp_poll_time <= 0 || pciehp_poll_time > 60)
pciehp_poll_time = 2; /* clamp to sane value */
--
2.30.2
