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| author | Suren A. Chilingaryan <csa@dside.dyndns.org> | 2012-10-29 19:20:28 +0100 |
|---|---|---|
| committer | Suren A. Chilingaryan <csa@dside.dyndns.org> | 2012-10-29 19:20:28 +0100 |
| commit | 21b136f8538df45f2fc0b0ef100a5eaeacf5ac9e (patch) | |
| tree | 6e70b7fc86c6783c557931adaead1a3ff3c48cc5 /dma/nwl_engine.c | |
| parent | 55961a80260cedc25eab90800253feaa94cffd16 (diff) | |
| download | ipecamera-21b136f8538df45f2fc0b0ef100a5eaeacf5ac9e.tar.gz ipecamera-21b136f8538df45f2fc0b0ef100a5eaeacf5ac9e.tar.bz2 ipecamera-21b136f8538df45f2fc0b0ef100a5eaeacf5ac9e.tar.xz ipecamera-21b136f8538df45f2fc0b0ef100a5eaeacf5ac9e.zip | |
Do not return DMA buffer in streaming read if the callback returns error
Diffstat (limited to 'dma/nwl_engine.c')
| -rw-r--r-- | dma/nwl_engine.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/dma/nwl_engine.c b/dma/nwl_engine.c index fc07ccd..e4c102d 100644 --- a/dma/nwl_engine.c +++ b/dma/nwl_engine.c @@ -299,10 +299,10 @@ int dma_nwl_stream_read(pcilib_dma_context_t *vctx, pcilib_dma_engine_t dma, uin pcilib_kmem_sync_block(ctx->pcilib, info->pages, PCILIB_KMEM_SYNC_FROMDEVICE, bufnum); void *buf = pcilib_kmem_get_block_ua(ctx->pcilib, info->pages, bufnum); ret = cb(cbattr, (eop?PCILIB_DMA_FLAG_EOP:0), bufsize, buf); + if (ret < 0) return -ret; // DS: Fixme, it looks like we can avoid calling this for the sake of performance // pcilib_kmem_sync_block(ctx->pcilib, info->pages, PCILIB_KMEM_SYNC_TODEVICE, bufnum); dma_nwl_return_buffer(ctx, info); - if (ret < 0) return -ret; res += bufsize; |