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| author | Hans de Goede <hdegoede@redhat.com> | 2021-04-04 16:38:31 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2021-04-06 22:10:21 +0200 |
| commit | a3790a8a94fc0234c5d38013b48e74ef221ec84c (patch) | |
| tree | 169d93e81bdbe0891b330226e25e4d62be8bb524 /drivers/platform | |
| parent | platform/x86: intel_pmc_core: Ignore GBE LTR on Tiger Lake platforms (diff) | |
| download | linux-a3790a8a94fc0234c5d38013b48e74ef221ec84c.tar.xz linux-a3790a8a94fc0234c5d38013b48e74ef221ec84c.zip | |
platform/x86: intel-hid: Fix spurious wakeups caused by tablet-mode events during suspend
Some devices send (duplicate) tablet-mode events when moved around even
though the mode has not changed; and they do this even when suspended.
Change the tablet-mode event handling when priv->wakeup_mode is set to
update the switch state in case it changed and then return immediately
(without calling pm_wakeup_hard_event()) to avoid spurious wakeups.
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212537
Fixes: 537b0dd4729e ("platform/x86: intel-hid: Add support for SW_TABLET_MODE")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Elia Devito <eliadevito@gmail.com>
Link: https://lore.kernel.org/r/20210404143831.25173-1-hdegoede@redhat.com
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/intel-hid.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/platform/x86/intel-hid.c b/drivers/platform/x86/intel-hid.c index 57cc92891a57..078648a9201b 100644 --- a/drivers/platform/x86/intel-hid.c +++ b/drivers/platform/x86/intel-hid.c @@ -483,11 +483,16 @@ static void notify_handler(acpi_handle handle, u32 event, void *context) goto wakeup; /* - * Switch events will wake the device and report the new switch - * position to the input subsystem. + * Some devices send (duplicate) tablet-mode events when moved + * around even though the mode has not changed; and they do this + * even when suspended. + * Update the switch state in case it changed and then return + * without waking up to avoid spurious wakeups. */ - if (priv->switches && (event == 0xcc || event == 0xcd)) - goto wakeup; + if (event == 0xcc || event == 0xcd) { + report_tablet_mode_event(priv->switches, event); + return; + } /* Wake up on 5-button array events only. */ if (event == 0xc0 || !priv->array) @@ -501,9 +506,6 @@ static void notify_handler(acpi_handle handle, u32 event, void *context) wakeup: pm_wakeup_hard_event(&device->dev); - if (report_tablet_mode_event(priv->switches, event)) - return; - return; } |