From e40cc1b476d60f22628741e53cf3446a29e6e6b9 Mon Sep 17 00:00:00 2001
From: Benjamin Berg <bberg@redhat.com>
Date: Mon, 23 Nov 2020 14:21:57 +0100
Subject: [PATCH] platform/x86: thinkpad_acpi: Send tablet mode switch at wakeup time
Git-commit: e40cc1b476d60f22628741e53cf3446a29e6e6b9
Patch-mainline: v5.10-rc6
References: git-fixes

The lid state may change while the machine is suspended. As such, we may
need to re-check the state at wake-up time (at least when waking up from
hibernation).
Add the appropriate call to the resume handler in order to sync the
SW_TABLET_MODE switch state with the hardware state.

Fixes: dda3ec0aa631 ("platform/x86: thinkpad_acpi: Implement tablet mode using GMMS method")
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=210269
Signed-off-by: Benjamin Berg <bberg@redhat.com>
Acked-by: Henrique de Moraes Holschuh <hnh@hmh.eng.br>
Link: https://lore.kernel.org/r/20201123132157.866303-1-benjamin@sipsolutions.net
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/platform/x86/thinkpad_acpi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 36d9594bca7f..0778458ead83 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -4235,6 +4235,7 @@ static void hotkey_resume(void)
 		pr_err("error while attempting to reset the event firmware interface\n");
 
 	tpacpi_send_radiosw_update();
+	tpacpi_input_send_tabletsw();
 	hotkey_tablet_mode_notify_change();
 	hotkey_wakeup_reason_notify_change();
 	hotkey_wakeup_hotunplug_complete_notify_change();
-- 
2.26.2