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From dfef13a3eb14ded653a0f1226eb5903e0b81b772 Mon Sep 17 00:00:00 2001
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From: Benjamin Berg <bberg@redhat.com>
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Date: Wed, 4 Dec 2019 19:54:07 +0100
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Subject: [PATCH 093/181] image-device: Print warning for incorrect
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deactivation
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Drivers may not handle deactivation properly when they are awaiting a
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finger. This should be prevented by the internal FpImageDevice state
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machine.
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---
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libfprint/fp-image-device.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/libfprint/fp-image-device.c b/libfprint/fp-image-device.c
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index 26c3cb0..252f414 100644
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--- a/libfprint/fp-image-device.c
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+++ b/libfprint/fp-image-device.c
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@@ -50,6 +50,7 @@ typedef struct
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{
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FpImageDeviceState state;
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gboolean active;
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+ gboolean cancelling;
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gboolean enroll_await_on_pending;
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gint enroll_stage;
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@@ -140,6 +141,9 @@ fp_image_device_deactivate (FpDevice *device)
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fp_dbg ("Already deactivated, ignoring request.");
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return;
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}
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+ if (!priv->cancelling && priv->state == FP_IMAGE_DEVICE_STATE_AWAIT_FINGER_ON)
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+ g_warning ("Deactivating image device while waiting for finger, this should not happen.");
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+
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priv->state = FP_IMAGE_DEVICE_STATE_INACTIVE;
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g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_FPI_STATE]);
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@@ -203,6 +207,7 @@ static void
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fp_image_device_cancel_action (FpDevice *device)
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{
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FpImageDevice *self = FP_IMAGE_DEVICE (device);
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+ FpImageDevicePrivate *priv = fp_image_device_get_instance_private (self);
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FpDeviceAction action;
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action = fpi_device_get_current_action (device);
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@@ -214,7 +219,9 @@ fp_image_device_cancel_action (FpDevice *device)
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action == FP_DEVICE_ACTION_IDENTIFY ||
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action == FP_DEVICE_ACTION_CAPTURE)
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{
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+ priv->cancelling = TRUE;
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fp_image_device_deactivate (FP_DEVICE (self));
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+ priv->cancelling = FALSE;
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/* XXX: Some nicer way of doing this would be good. */
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fpi_device_action_error (FP_DEVICE (self),
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--
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2.24.1
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