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cros_ec: Don't signal wake event for non-wake host events

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The subset of wake-enabled host events is defined by the EC, but the EC
may still send non-wake host events if we're in the process of
suspending. Get the mask of wake-enabled host events from the EC and
filter out non-wake events to prevent spurious aborted suspend
attempts.

Signed-off-by: Shawn Nematbakhsh <[email protected]>
Signed-off-by: Thierry Escande <[email protected]>
Acked-for-MFD-by: Lee Jones <[email protected]>
Signed-off-by: Benson Leung <[email protected]>
This commit is contained in:
Shawn Nematbakhsh 2017-02-14 20:58:02 +01:00 • committed by Benson Leung
commit 29d99b966d
4 changed files with 87 additions and 10 deletions
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13
drivers/mfd/cros_ec.c
View file

@ -54,12 +54,19 @@ static const struct mfd_cell ec_pd_cell = {
static irqreturn_t ec_irq_thread(int irq, void *data)
{
struct cros_ec_device *ec_dev = data;
bool wake_event = true;
int ret;
if (device_may_wakeup(ec_dev->dev))
ret = cros_ec_get_next_event(ec_dev, &wake_event);
/*
* Signal only if wake host events or any interrupt if
* cros_ec_get_next_event() returned an error (default value for
* wake_event is true)
*/
if (wake_event && device_may_wakeup(ec_dev->dev))
pm_wakeup_event(ec_dev->dev, 0);
ret = cros_ec_get_next_event(ec_dev);
if (ret > 0)
blocking_notifier_call_chain(&ec_dev->event_notifier,
0, ec_dev);
@ -221,7 +228,7 @@ EXPORT_SYMBOL(cros_ec_suspend);
static void cros_ec_drain_events(struct cros_ec_device *ec_dev)
{
while (cros_ec_get_next_event(ec_dev) > 0)
while (cros_ec_get_next_event(ec_dev, NULL) > 0)
blocking_notifier_call_chain(&ec_dev->event_notifier,
1, ec_dev);
}