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vfs0050: Stop capture after a timeout happens

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If a transfer errors out then actual_length is negative. The only error
that is not caught is a timeout error, which should also result in the
SSM to move to the next state.
This commit is contained in:
Evgeny Gagauz 2020-05-13 09:51:23 +00:00 • committed by Benjamin Berg
parent 07ff03970f
commit 1b74813adf
1 changed files with 6 additions and 5 deletions
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11
libfprint/drivers/vfs0050.c
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@ -156,6 +156,8 @@ async_abort (FpDevice *dev, FpiSsm *ssm, int ep)
else else
fpi_usb_transfer_fill_bulk (transfer, ep, VFS_USB_BUFFER_SIZE); fpi_usb_transfer_fill_bulk (transfer, ep, VFS_USB_BUFFER_SIZE);
transfer->ssm = ssm;
fpi_usb_transfer_submit (transfer, VFS_USB_ABORT_TIMEOUT, NULL, fpi_usb_transfer_submit (transfer, VFS_USB_ABORT_TIMEOUT, NULL,
async_abort_callback, NULL); async_abort_callback, NULL);
} }
@ -464,8 +466,8 @@ receive_callback (FpiUsbTransfer *transfer, FpDevice *device,
if (error) if (error)
g_error_free (error); g_error_free (error);
/* Check if fingerprint data is over */ /* Capture is done when there is no more data to transfer or device timed out */
if (transfer->actual_length == 0) if (transfer->actual_length <= 0)
{ {
fpi_ssm_next_state (transfer->ssm); fpi_ssm_next_state (transfer->ssm);
} }
@ -473,7 +475,7 @@ receive_callback (FpiUsbTransfer *transfer, FpDevice *device,
{ {
self->bytes += transfer->actual_length; self->bytes += transfer->actual_length;
/* We need more data */ /* Try reading more data */
fpi_ssm_jump_to_state (transfer->ssm, fpi_ssm_jump_to_state (transfer->ssm,
fpi_ssm_get_cur_state (transfer->ssm)); fpi_ssm_get_cur_state (transfer->ssm));
} }
@ -595,8 +597,7 @@ activate_ssm (FpiSsm *ssm, FpDevice *dev)
/* Receive chunk of data */ /* Receive chunk of data */
transfer = fpi_usb_transfer_new (dev); transfer = fpi_usb_transfer_new (dev);
fpi_usb_transfer_fill_bulk_full (transfer, 0x82, fpi_usb_transfer_fill_bulk_full (transfer, 0x82,
(guint8 *) (guint8 *) self->lines_buffer + self->bytes,
(self->lines_buffer + self->bytes),
VFS_USB_BUFFER_SIZE, NULL); VFS_USB_BUFFER_SIZE, NULL);
transfer->ssm = ssm; transfer->ssm = ssm;
fpi_usb_transfer_submit (transfer, VFS_USB_TIMEOUT, NULL, fpi_usb_transfer_submit (transfer, VFS_USB_TIMEOUT, NULL,