[PATCH v4 6/7] platform/x86: thinkpad_acpi: Use input_device_enabled()

[Andrzej Pietrasiewicz]

Use the new helper. Inspecting input device's 'users' member needs to be
done under device's mutex, so add appropriate invocations.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxxxx>
Acked-by: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx>
---
 drivers/platform/x86/thinkpad_acpi.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 0f704484ae1d..8ae11b8c3ebb 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2671,9 +2671,10 @@ static void hotkey_poll_setup(const bool may_warn)
 	const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask;
 	const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask;
 
+	mutex_lock(&tpacpi_inputdev->mutex);
 	if (hotkey_poll_freq > 0 &&
 	    (poll_driver_mask ||
-	     (poll_user_mask && tpacpi_inputdev->users > 0))) {
+	     (poll_user_mask && input_device_enabled(tpacpi_inputdev)))) {
 		if (!tpacpi_hotkey_task) {
 			tpacpi_hotkey_task = kthread_run(hotkey_kthread,
 					NULL, TPACPI_NVRAM_KTHREAD_NAME);
@@ -2690,6 +2691,7 @@ static void hotkey_poll_setup(const bool may_warn)
 				  poll_user_mask, poll_driver_mask);
 		}
 	}
+	mutex_unlock(&tpacpi_inputdev->mutex);
 }
 
 static void hotkey_poll_setup_safe(const bool may_warn)
-- 
2.17.1