[PATCH v1] chrome/cros_ec: Handle events during suspend after resume completion

[Karthikeyan Ramasubramanian]

On boards where EC IRQ is not wake capable, EC does not trigger IRQ to
signal any non-wake events until EC receives host resume event.
Commit 47ea0ddb1f56 ("platform/chrome: cros_ec_lpc: Separate host
command and irq disable") separated enabling IRQ and sending resume
event host command into early_resume and resume_complete stages
respectively. This separation leads to host not handling certain events
posted during a small time window between early_resume and
resume_complete stages. This change moves handling all events that
happened during suspend after sending host resume event.

Fixes: 47ea0ddb1f56 ("platform/chrome: cros_ec_lpc: Separate host command and irq disable")
Cc: stable@xxxxxxxxxxxxxxx
Cc: Lalith Rajendran <lalithkraj@xxxxxxxxxxxx>
Cc: chrome-platform@xxxxxxxxxxxxxxx
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@xxxxxxxxxxxx>
---

 drivers/platform/chrome/cros_ec.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec.c b/drivers/platform/chrome/cros_ec.c
index badc68bbae8cc..41714df053916 100644
--- a/drivers/platform/chrome/cros_ec.c
+++ b/drivers/platform/chrome/cros_ec.c
@@ -432,6 +432,12 @@ static void cros_ec_send_resume_event(struct cros_ec_device *ec_dev)
 void cros_ec_resume_complete(struct cros_ec_device *ec_dev)
 {
 	cros_ec_send_resume_event(ec_dev);
+	/*
+	 * Let the mfd devices know about events that occur during
+	 * suspend. This way the clients know what to do with them.
+	 */
+	cros_ec_report_events_during_suspend(ec_dev);
+
 }
 EXPORT_SYMBOL(cros_ec_resume_complete);
 
@@ -442,12 +448,6 @@ static void cros_ec_enable_irq(struct cros_ec_device *ec_dev)
 
 	if (ec_dev->wake_enabled)
 		disable_irq_wake(ec_dev->irq);
-
-	/*
-	 * Let the mfd devices know about events that occur during
-	 * suspend. This way the clients know what to do with them.
-	 */
-	cros_ec_report_events_during_suspend(ec_dev);
 }
 
 /**
@@ -475,8 +475,9 @@ EXPORT_SYMBOL(cros_ec_resume_early);
  */
 int cros_ec_resume(struct cros_ec_device *ec_dev)
 {
-	cros_ec_enable_irq(ec_dev);
-	cros_ec_send_resume_event(ec_dev);
+	cros_ec_resume_early(ec_dev);
+	cros_ec_resume_complete(ec_dev);
+
 	return 0;
 }
 EXPORT_SYMBOL(cros_ec_resume);
-- 
2.44.0.769.g3c40516874-goog