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Prepare to make struct > > dma_async_tx_descriptor private to the DMA engine. > > > > Signed-off-by: Frank Li > > --- > > drivers/net/ethernet/allwinner/sun4i-emac.c | 3 +-- > > drivers/net/ethernet/micrel/ks8842.c | 6 ++---- > > drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 6 ++---- > > drivers/net/wwan/qcom_bam_dmux.c | 10 ++++------ > > 4 files changed, 9 insertions(+), 16 deletions(-) > > [...] > > > diff --git a/drivers/net/wwan/qcom_bam_dmux.c b/drivers/net/wwan/qcom_bam_dmux.c > > index cc6ace8d64371..1479f8362e04e 100644 > > --- a/drivers/net/wwan/qcom_bam_dmux.c > > +++ b/drivers/net/wwan/qcom_bam_dmux.c > > @@ -195,9 +195,8 @@ static bool bam_dmux_skb_dma_submit_tx(struct bam_dmux_skb_dma *skb_dma) > > return false; > > } > > > > - desc->callback = bam_dmux_tx_callback; > > - desc->callback_param = skb_dma; > > - desc->cookie = dmaengine_submit(desc); > > + dmaengine_desc_set_callback(desc, bam_dmux_tx_callback, NULL, skb_dma); > > + dmaengine_submit(desc); > > return true; > > } > > > > @@ -477,9 +476,8 @@ static bool bam_dmux_skb_dma_submit_rx(struct bam_dmux_skb_dma *skb_dma) > > return false; > > } > > > > - desc->callback = bam_dmux_rx_callback; > > - desc->callback_param = skb_dma; > > - desc->cookie = dmaengine_submit(desc); > > + dmaengine_desc_set_callback(desc, bam_dmux_rx_callback, NULL, skb_dma); > > + dmaengine_submit(desc); > > I noticed in the above that the return value of dmaengine_submit is discarded > instead of stored. > > Is that intentional? I suppose it might be because AFAICT cookie is never > used and the commit message says "no functional change intended". dma_cookie_assign() already set desc->cookie in dmaengine_submit(). Of couse it is not obvious. Do you need me update commit message to descript it. Frank > > Reviewed-by: Joe Damato