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diff -up ./src/ccid_usb.c.max_cpu_bug ./src/ccid_usb.c
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--- ./src/ccid_usb.c.max_cpu_bug 2012-06-22 00:25:20.000000000 -0700
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+++ ./src/ccid_usb.c 2016-06-29 17:17:11.284337349 -0700
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@@ -154,6 +154,36 @@ status_t OpenUSB(unsigned int reader_ind
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} /* OpenUSB */
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+ /*****************************************************************************
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+ *
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+ * close_libusb_if_needed
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+ * (pulled from upstream ccid_usb)
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+ *
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+ ****************************************************************************/
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+ static void close_libusb_if_needed(void)
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+ {
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+ int i, to_exit = TRUE;
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+
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+ if (NULL == ctx)
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+ return;
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+
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+ /* if at least 1 reader is still in use we do not exit libusb */
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+ for (i=0; i
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+ {
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+ if (usbDevice[i].dev_handle != NULL)
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+ to_exit = FALSE;
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+ }
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+
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+ if (to_exit)
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+ {
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+ DEBUG_INFO("libusb_exit");
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+ libusb_exit(ctx);
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+ ctx = NULL;
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+ }
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+} /* close_libusb_if_needed */
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+
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+
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+
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/*****************************************************************************
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*
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* OpenUSBByName
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@@ -609,8 +639,8 @@ again:
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end:
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if (usbDevice[reader_index].dev_handle == NULL)
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{
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- /* does not work for libusb <= 1.0.8 */
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- /* libusb_exit(ctx); */
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+ close_libusb_if_needed();
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+
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if (claim_failed)
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return STATUS_COMM_ERROR;
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return STATUS_NO_SUCH_DEVICE;
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@@ -628,6 +658,9 @@ end1:
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/* free bundle list */
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bundleRelease(&plist);
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+ if (return_value != STATUS_SUCCESS)
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+ close_libusb_if_needed();
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+
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return return_value;
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} /* OpenUSBByName */
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@@ -776,13 +809,13 @@ status_t CloseUSB(unsigned int reader_in
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usbDevice[reader_index].interface);
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(void)libusb_close(usbDevice[reader_index].dev_handle);
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- /* does not work for libusb <= 1.0.8 */
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- /* libusb_exit(ctx); */
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}
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/* mark the resource unused */
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usbDevice[reader_index].dev_handle = NULL;
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usbDevice[reader_index].interface = 0;
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+
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+ close_libusb_if_needed();
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return STATUS_SUCCESS;
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} /* CloseUSB */
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