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simtrace2-cardem-pcsc: continue in case of LIBUSB_TRANSFER_ERROR

Sometimes I get LIBUSB_TRANSFER_ERROR particularly when the USB bus
is very busy.  We shouldn't terminate the program, but simply resubmit
it.  That's what we have multiple transfers for...

Change-Id: I77d7bc636c21171fcff7e70e87c0109cbaee9b51
---
M host/src/simtrace2-cardem-pcsc.c
1 file changed, 6 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/simtrace2 refs/changes/89/27389/1

diff --git a/host/src/simtrace2-cardem-pcsc.c b/host/src/simtrace2-cardem-pcsc.c
index df4397a..c86f06a 100644
--- a/host/src/simtrace2-cardem-pcsc.c
+++ b/host/src/simtrace2-cardem-pcsc.c
@@ -278,6 +278,9 @@
 		/* hand the message up the stack */
 		process_usb_msg(ci, xfer->buffer, xfer->actual_length);
 		break;
+	case LIBUSB_TRANSFER_ERROR:
+		LOGCI(ci, LOGL_FATAL, "USB IN transfer error, trying resubmit\n");
+		break;
 	case LIBUSB_TRANSFER_NO_DEVICE:
 		LOGCI(ci, LOGL_FATAL, "USB device disappeared\n");
 		exit(1);
@@ -329,6 +332,9 @@
 	case LIBUSB_TRANSFER_COMPLETED:
 		process_usb_msg_irq(ci, xfer->buffer, xfer->actual_length);
 		break;
+	case LIBUSB_TRANSFER_ERROR:
+		LOGCI(ci, LOGL_FATAL, "USB INT transfer error, trying resubmit\n");
+		break;
 	case LIBUSB_TRANSFER_NO_DEVICE:
 		LOGCI(ci, LOGL_FATAL, "USB device disappeared\n");
 		exit(1);

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