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uru4000: Fix state change from IRQ handler

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The IRQ handler will re-register itself automatically. However, if this
happens after the callback is called, then the check whether the IRQ
handler is running fails.

Re-start the IRQ handler before calling the callback. This way the state
changes happening from the callback will see the correct IRQ handler
registration state.

See: #205
This commit is contained in:
Benjamin Berg 2019-12-04 17:14:35 +01:00 committed by Benjamin Berg
parent 7b68344394
commit 8f21aa1b26
1 changed files with 2 additions and 2 deletions
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4
libfprint/drivers/uru4000.c
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@ -332,6 +332,8 @@ irq_handler (FpiUsbTransfer *transfer,
return; return;
} }
start_irq_handler (imgdev);
type = GUINT16_FROM_BE (*((uint16_t *) data)); type = GUINT16_FROM_BE (*((uint16_t *) data));
fp_dbg ("recv irq type %04x", type); fp_dbg ("recv irq type %04x", type);
@ -344,8 +346,6 @@ irq_handler (FpiUsbTransfer *transfer,
urudev->irq_cb (imgdev, NULL, type, urudev->irq_cb_data); urudev->irq_cb (imgdev, NULL, type, urudev->irq_cb_data);
else else
fp_dbg ("ignoring interrupt"); fp_dbg ("ignoring interrupt");
start_irq_handler (imgdev);
} }
static void static void