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From b71219b5f80b646ca9655799d33bdcccf67daa66 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 17:14:35 +0100
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Subject: [PATCH 088/181] uru4000: Fix state change from IRQ handler
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The IRQ handler will re-register itself automatically. However, if this
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happens after the callback is called, then the check whether the IRQ
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handler is running fails.
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Re-start the IRQ handler before calling the callback. This way the state
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changes happening from the callback will see the correct IRQ handler
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registration state.
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See: #205
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---
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libfprint/drivers/uru4000.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/libfprint/drivers/uru4000.c b/libfprint/drivers/uru4000.c
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index 122544d..4385f29 100644
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--- a/libfprint/drivers/uru4000.c
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+++ b/libfprint/drivers/uru4000.c
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@@ -332,6 +332,8 @@ irq_handler (FpiUsbTransfer *transfer,
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return;
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}
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+ start_irq_handler (imgdev);
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+
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type = GUINT16_FROM_BE (*((uint16_t *) data));
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fp_dbg ("recv irq type %04x", type);
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@@ -344,8 +346,6 @@ irq_handler (FpiUsbTransfer *transfer,
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urudev->irq_cb (imgdev, NULL, type, urudev->irq_cb_data);
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else
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fp_dbg ("ignoring interrupt");
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-
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- start_irq_handler (imgdev);
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}
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static void
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--
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2.24.1
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