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fxlink: send zero-length packets after commands

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Lephenixnoir 2023-03-12 20:54:53 +01:00
parent 3dc9f06219
commit c7c1ec35f7
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1 changed files with 4 additions and 0 deletions
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4
fxlink/devices.c
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@ -579,6 +579,10 @@ void fxlink_device_start_bulk_OUT(struct fxlink_device *fdev,
FXLINK_MESSAGE_HEADER_SIZE, /* Buffer size */ FXLINK_MESSAGE_HEADER_SIZE, /* Buffer size */
bulk_OUT_callback, fdev, -1); /* Callback and timeout */ bulk_OUT_callback, fdev, -1); /* Callback and timeout */
/* The fxlink protocol generally doesn't rely on sizes and instead expects
zero-length packets to mark the ends of transactions */
comm->tr_bulk_OUT->flags = LIBUSB_TRANSFER_ADD_ZERO_PACKET;
int rc = libusb_submit_transfer(comm->tr_bulk_OUT); int rc = libusb_submit_transfer(comm->tr_bulk_OUT);
if(rc < 0) { if(rc < 0) {
elog_libusb(rc, "bulk OUT transfer failed to submit"); elog_libusb(rc, "bulk OUT transfer failed to submit");