It's a function not a macro and the upcoming changes use channel for the individual hpet timer units to allow a step by step refactoring approach.
Signed-off-by: Thomas Gleixner <[email protected]> --- arch/x86/kernel/hpet.c | 27 ++++++++++----------------- 1 file changed, 10 insertions(+), 17 deletions(-) --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -69,9 +69,10 @@ static bool hpet_verbose; static struct clock_event_device hpet_clockevent; -static inline struct hpet_dev *EVT_TO_HPET_DEV(struct clock_event_device *evtdev) +static inline +struct hpet_dev *clockevent_to_channel(struct clock_event_device *evt) { - return container_of(evtdev, struct hpet_dev, evt); + return container_of(evt, struct hpet_dev, evt); } inline unsigned int hpet_readl(unsigned int a) @@ -458,28 +459,22 @@ void hpet_msi_write(struct hpet_dev *hde static int hpet_msi_shutdown(struct clock_event_device *evt) { - struct hpet_dev *hdev = EVT_TO_HPET_DEV(evt); - - return hpet_shutdown(evt, hdev->num); + return hpet_shutdown(evt, clockevent_to_channel(evt)->num); } static int hpet_msi_set_oneshot(struct clock_event_device *evt) { - struct hpet_dev *hdev = EVT_TO_HPET_DEV(evt); - - return hpet_set_oneshot(evt, hdev->num); + return hpet_set_oneshot(evt, clockevent_to_channel(evt)->num); } static int hpet_msi_set_periodic(struct clock_event_device *evt) { - struct hpet_dev *hdev = EVT_TO_HPET_DEV(evt); - - return hpet_set_periodic(evt, hdev->num); + return hpet_set_periodic(evt, clockevent_to_channel(evt)->num); } static int hpet_msi_resume(struct clock_event_device *evt) { - struct hpet_dev *hdev = EVT_TO_HPET_DEV(evt); + struct hpet_dev *hdev = clockevent_to_channel(evt); struct irq_data *data = irq_get_irq_data(hdev->irq); struct msi_msg msg; @@ -491,16 +486,14 @@ static int hpet_msi_resume(struct clock_ } static int hpet_msi_next_event(unsigned long delta, - struct clock_event_device *evt) + struct clock_event_device *evt) { - struct hpet_dev *hdev = EVT_TO_HPET_DEV(evt); - - return hpet_next_event(delta, hdev->num); + return hpet_next_event(delta, clockevent_to_channel(evt)->num); } static irqreturn_t hpet_interrupt_handler(int irq, void *data) { - struct hpet_dev *dev = (struct hpet_dev *)data; + struct hpet_dev *dev = data; struct clock_event_device *hevt = &dev->evt; if (!hevt->event_handler) {
