Fix bug causing failures of NWL engine to inherit kernel buffers

1 files changed, 5 insertions, 1 deletions

diff --git a/dma/nwl.c b/dma/nwl.c
index 0a41703..7d2c964 100644
--- a/dma/nwl.c
+++ b/dma/nwl.c
@@ -16,6 +16,7 @@
 #include "nwl_defines.h"
 
 int dma_nwl_start(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, pcilib_dma_flags_t flags) {
+    int err;
     nwl_dma_t *ctx = (nwl_dma_t*)vctx;
 
     if (!ctx->started) {
@@ -26,8 +27,11 @@ int dma_nwl_start(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, pcilib_dm
     if (dma == PCILIB_DMA_ENGINE_INVALID) return 0;
     else if (dma > ctx->n_engines) return PCILIB_ERROR_INVALID_BANK;
 
+    err = dma_nwl_start_engine(ctx, dma);
+
     if (flags&PCILIB_DMA_FLAG_PERSISTENT) ctx->engines[dma].preserve = 1;
-    return dma_nwl_start_engine(ctx, dma);
+    
+    return err;
 }
 
 int dma_nwl_stop(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, pcilib_dma_flags_t flags) {