HID: intel-ish-hid: ipc: only enable IRQ wakeup when requested

Fixes spurious wakeups from s0ix on Lenovo ThinkPad X1 Cargon Gen 9 on
lid close.

These wakeups are generated by interrupts from the ISH on changes to the
lid status.

By disabling the wake IRQ from the ISH we inhibit these spurious
wakeups while keeping the resume from LID open through the ACPI
interrupt.

Reports on the Lenovo forums indicate that Lenovo ThinkPad X1 Yoga Gen6
is also affected.

Fixes: ae02e5d40d5f ("HID: intel-ish-hid: ipc layer")
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=214855
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Link: https://lore.kernel.org/r/20211130060117.3026-1-linux@weissschuh.net

diff --git a/drivers/hid/intel-ish-hid/ipc/pci-ish.c b/drivers/hid/intel-ish-hid/ipc/pci-ish.c
index 1c5039081db2786474d8cdc9846f0f18bba58090..8e9d9450cb835df16dbc556dd0043713dd7d986a 100644 (file)
--- a/drivers/hid/intel-ish-hid/ipc/pci-ish.c
+++ b/drivers/hid/intel-ish-hid/ipc/pci-ish.c
@@ -266,7 +266,8 @@ static void __maybe_unused ish_resume_handler(struct work_struct *work)
 
        if (ish_should_leave_d0i3(pdev) && !dev->suspend_flag
                        && IPC_IS_ISH_ILUP(fwsts)) {
-               disable_irq_wake(pdev->irq);
+               if (device_may_wakeup(&pdev->dev))
+                       disable_irq_wake(pdev->irq);
 
                ish_set_host_ready(dev);
 
@@ -337,7 +338,8 @@ static int __maybe_unused ish_suspend(struct device *device)
                         */
                        pci_save_state(pdev);
 
-                       enable_irq_wake(pdev->irq);
+                       if (device_may_wakeup(&pdev->dev))
+                               enable_irq_wake(pdev->irq);
                }
        } else {
                /*