On Thursday, May 7, 2020 5:38:11 AM CEST Chris Chiu wrote:
> On Wed, May 6, 2020 at 6:19 PM Rafael J. Wysocki <raf...@kernel.org> wrote:
> >
> > On Wed, May 6, 2020 at 11:32 AM Rafael J. Wysocki <raf...@kernel.org> wrote:
> > >
> > >
> > > Thanks for the report, the issue evidently is EC-related.
> > >
> > > > @@ -1024,7 +1024,7 @@ static bool acpi_s2idle_wake(void)
> > > > * regarded as a spurious one.
> > > > */
> > > > if (!acpi_ec_dispatch_gpe())
> > > > - return false;
> > > > + return true;
> > >
> > > Have you tried commenting out simply removing the if () check and the
> > > following return statement?
> >
> > Scratch that.
> >
> > Instead, please try doing
> >
> > acpi_ec_dispatch_gpe()
> >
> > instead of the if () and the following return statement.
>
> Yes. I verified with the modification you suggested on my laptop. It's
> working OK.
> I can wake from a keystroke w/o problem.
>
> @ -1024,8 +1024,7 @@ static bool acpi_s2idle_wake(void)
> * If the EC GPE status bit has not been set, the wakeup is
> * regarded as a spurious one.
> */
> - if (!acpi_ec_dispatch_gpe())
> - return false;
> + acpi_ec_dispatch_gpe();
>
> /*
> * Cancel the wakeup and process all pending events in case
>
OK, great, thanks for the confirmation!
Does the appended patch work for you then?
It should be functionally equivalent to the above change if I didn't mess it up.
---
drivers/acpi/ec.c | 23 ++++++++++++++---------
drivers/acpi/internal.h | 1 -
drivers/acpi/sleep.c | 14 ++------------
3 files changed, 16 insertions(+), 22 deletions(-)
Index: linux-pm/drivers/acpi/sleep.c
===================================================================
--- linux-pm.orig/drivers/acpi/sleep.c
+++ linux-pm/drivers/acpi/sleep.c
@@ -1013,21 +1013,11 @@ static bool acpi_s2idle_wake(void)
if (acpi_check_wakeup_handlers())
return true;
- /*
- * If the status bit is set for any enabled GPE other than the
- * EC one, the wakeup is regarded as a genuine one.
- */
- if (acpi_ec_other_gpes_active())
+ /* Check non-EC GPE wakeups and dispatch the EC GPE. */
+ if (acpi_ec_dispatch_gpe())
return true;
/*
- * If the EC GPE status bit has not been set, the wakeup is
- * regarded as a spurious one.
- */
- if (!acpi_ec_dispatch_gpe())
- return false;
-
- /*
* Cancel the wakeup and process all pending events in case
* there are any wakeup ones in there.
*
Index: linux-pm/drivers/acpi/ec.c
===================================================================
--- linux-pm.orig/drivers/acpi/ec.c
+++ linux-pm/drivers/acpi/ec.c
@@ -1994,23 +1994,28 @@ void acpi_ec_set_gpe_wake_mask(u8 action
acpi_set_gpe_wake_mask(NULL, first_ec->gpe, action);
}
-bool acpi_ec_other_gpes_active(void)
-{
- return acpi_any_gpe_status_set(first_ec ? first_ec->gpe : U32_MAX);
-}
-
bool acpi_ec_dispatch_gpe(void)
{
u32 ret;
if (!first_ec)
- return false;
+ return acpi_any_gpe_status_set(U32_MAX);
+ /*
+ * Report wakeup if the status bit is set for any enabled GPE other
+ * than the EC one.
+ */
+ if (acpi_any_gpe_status_set(first_ec->gpe))
+ return true;
+
+ /*
+ * Dispatch the EC GPE in-band, but do not report wakeup in any case
+ * to allow the caller to process events properly after that.
+ */
ret = acpi_dispatch_gpe(NULL, first_ec->gpe);
- if (ret == ACPI_INTERRUPT_HANDLED) {
+ if (ret == ACPI_INTERRUPT_HANDLED)
pm_pr_dbg("EC GPE dispatched\n");
- return true;
- }
+
return false;
}
#endif /* CONFIG_PM_SLEEP */
Index: linux-pm/drivers/acpi/internal.h
===================================================================
--- linux-pm.orig/drivers/acpi/internal.h
+++ linux-pm/drivers/acpi/internal.h
@@ -202,7 +202,6 @@ void acpi_ec_remove_query_handler(struct
#ifdef CONFIG_PM_SLEEP
void acpi_ec_flush_work(void);
-bool acpi_ec_other_gpes_active(void);
bool acpi_ec_dispatch_gpe(void);
#endif
