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-rw-r--r--src/libosmo-fl2k.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libosmo-fl2k.c b/src/libosmo-fl2k.c
index 7786477..0f996d3 100644
--- a/src/libosmo-fl2k.c
+++ b/src/libosmo-fl2k.c
@@ -668,9 +668,11 @@ static int _fl2k_free_async_buffers(fl2k_dev_t *dev)
for (i = 0; i < dev->xfer_buf_num; ++i) {
if (dev->xfer_buf[i]) {
if (dev->use_zerocopy) {
+#if defined (__linux__) && LIBUSB_API_VERSION >= 0x01000105
libusb_dev_mem_free(dev->devh,
dev->xfer_buf[i],
dev->xfer_buf_len);
+#endif
} else {
free(dev->xfer_buf[i]);
}