873 	struct ks8842_tx_dma_ctl *tx_ctl = &adapter->dma_tx;  in ks8842_stop_dma()  local
876 	tx_ctl->adesc = NULL;  in ks8842_stop_dma()
877 	if (tx_ctl->chan)  in ks8842_stop_dma()
878 		dmaengine_terminate_all(tx_ctl->chan);  in ks8842_stop_dma()
895 	struct ks8842_tx_dma_ctl *tx_ctl = &adapter->dma_tx;  in ks8842_dealloc_dma_bufs()  local
900 	if (tx_ctl->chan)  in ks8842_dealloc_dma_bufs()
901 		dma_release_channel(tx_ctl->chan);  in ks8842_dealloc_dma_bufs()
902 	tx_ctl->chan = NULL;  in ks8842_dealloc_dma_bufs()
910 	if (sg_dma_address(&tx_ctl->sg))  in ks8842_dealloc_dma_bufs()
911 		dma_unmap_single(adapter->dev, sg_dma_address(&tx_ctl->sg),  in ks8842_dealloc_dma_bufs()
913 	sg_dma_address(&tx_ctl->sg) = 0;  in ks8842_dealloc_dma_bufs()
915 	kfree(tx_ctl->buf);  in ks8842_dealloc_dma_bufs()
916 	tx_ctl->buf = NULL;  in ks8842_dealloc_dma_bufs()
927 	struct ks8842_tx_dma_ctl *tx_ctl = &adapter->dma_tx;  in ks8842_alloc_dma_bufs()  local
937 	sg_init_table(&tx_ctl->sg, 1);  in ks8842_alloc_dma_bufs()
939 	tx_ctl->chan = dma_request_channel(mask, ks8842_dma_filter_fn,  in ks8842_alloc_dma_bufs()
940 					   (void *)(long)tx_ctl->channel);  in ks8842_alloc_dma_bufs()
941 	if (!tx_ctl->chan) {  in ks8842_alloc_dma_bufs()
947 	tx_ctl->buf = kmalloc(DMA_BUFFER_SIZE, GFP_KERNEL);  in ks8842_alloc_dma_bufs()
948 	if (!tx_ctl->buf) {  in ks8842_alloc_dma_bufs()
953 	sg_dma_address(&tx_ctl->sg) = dma_map_single(adapter->dev,  in ks8842_alloc_dma_bufs()
954 		tx_ctl->buf, DMA_BUFFER_SIZE, DMA_TO_DEVICE);  in ks8842_alloc_dma_bufs()
955 	if (dma_mapping_error(adapter->dev, sg_dma_address(&tx_ctl->sg))) {  in ks8842_alloc_dma_bufs()
957 		sg_dma_address(&tx_ctl->sg) = 0;  in ks8842_alloc_dma_bufs()