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| author | Edgar E. Iglesias <edgar.iglesias@xilinx.com> | 2016-02-16 12:42:49 +0100 |
|---|---|---|
| committer | Edgar E. Iglesias <edgar.iglesias@xilinx.com> | 2016-02-20 00:17:48 +0100 |
| commit | c3bce9d5f986bc22b0692a8fa9d26ce6d304375c (patch) | |
| tree | 43c3c4ae44721518b0f1be0b874fa7a0798ddfca /hw/dma | |
| parent | 586d1a99ff1253ac97c07459743e952abfff2a54 (diff) | |
| download | qemu-c3bce9d5f986bc22b0692a8fa9d26ce6d304375c.zip qemu-c3bce9d5f986bc22b0692a8fa9d26ce6d304375c.tar.gz qemu-c3bce9d5f986bc22b0692a8fa9d26ce6d304375c.tar.bz2 | |
etraxfs_dma: Dont forward zero-length payload to clients
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Diffstat (limited to 'hw/dma')
| -rw-r--r-- | hw/dma/etraxfs_dma.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/hw/dma/etraxfs_dma.c b/hw/dma/etraxfs_dma.c index 9cbb165..d5650eb 100644 --- a/hw/dma/etraxfs_dma.c +++ b/hw/dma/etraxfs_dma.c @@ -440,13 +440,16 @@ static int channel_out_run(struct fs_dma_ctrl *ctrl, int c) D(printf("channel %d pushes %x %u bytes eop=%u\n", c, saved_data_buf, len, out_eop)); - if (ctrl->channels[c].client->client.push) - ctrl->channels[c].client->client.push( - ctrl->channels[c].client->client.opaque, - buf, len, out_eop); - else + if (ctrl->channels[c].client->client.push) { + if (len > 0) { + ctrl->channels[c].client->client.push( + ctrl->channels[c].client->client.opaque, + buf, len, out_eop); + } + } else { printf("WARNING: DMA ch%d dataloss," " no attached client.\n", c); + } saved_data_buf += len; |