add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/atm/he.c
..
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@@ -533,9 +533,10 @@
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 static int he_init_tpdrq(struct he_dev *he_dev)
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 {
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-	he_dev->tpdrq_base = dma_zalloc_coherent(&he_dev->pci_dev->dev,
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-						 CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq),
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-						 &he_dev->tpdrq_phys, GFP_KERNEL);
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+	he_dev->tpdrq_base = dma_alloc_coherent(&he_dev->pci_dev->dev,
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+						CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq),
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+						&he_dev->tpdrq_phys,
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+						GFP_KERNEL);
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 	if (he_dev->tpdrq_base == NULL) {
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 		hprintk("failed to alloc tpdrq\n");
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 		return -ENOMEM;
..
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@@ -805,9 +806,9 @@
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 		goto out_free_rbpl_virt;
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 	}
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-	he_dev->rbpl_base = dma_zalloc_coherent(&he_dev->pci_dev->dev,
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-						CONFIG_RBPL_SIZE * sizeof(struct he_rbp),
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-						&he_dev->rbpl_phys, GFP_KERNEL);
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+	he_dev->rbpl_base = dma_alloc_coherent(&he_dev->pci_dev->dev,
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+					       CONFIG_RBPL_SIZE * sizeof(struct he_rbp),
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+					       &he_dev->rbpl_phys, GFP_KERNEL);
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 	if (he_dev->rbpl_base == NULL) {
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 		hprintk("failed to alloc rbpl_base\n");
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 		goto out_destroy_rbpl_pool;
..
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@@ -844,9 +845,9 @@
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 	/* rx buffer ready queue */
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-	he_dev->rbrq_base = dma_zalloc_coherent(&he_dev->pci_dev->dev,
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-						CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq),
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-						&he_dev->rbrq_phys, GFP_KERNEL);
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+	he_dev->rbrq_base = dma_alloc_coherent(&he_dev->pci_dev->dev,
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+					       CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq),
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+					       &he_dev->rbrq_phys, GFP_KERNEL);
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 	if (he_dev->rbrq_base == NULL) {
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 		hprintk("failed to allocate rbrq\n");
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 		goto out_free_rbpl;
..
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@@ -868,9 +869,9 @@
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 	/* tx buffer ready queue */
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-	he_dev->tbrq_base = dma_zalloc_coherent(&he_dev->pci_dev->dev,
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-						CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq),
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-						&he_dev->tbrq_phys, GFP_KERNEL);
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+	he_dev->tbrq_base = dma_alloc_coherent(&he_dev->pci_dev->dev,
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+					       CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq),
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+					       &he_dev->tbrq_phys, GFP_KERNEL);
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 	if (he_dev->tbrq_base == NULL) {
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 		hprintk("failed to allocate tbrq\n");
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 		goto out_free_rbpq_base;
..
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@@ -913,11 +914,9 @@
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 	/* 2.9.3.5  tail offset for each interrupt queue is located after the
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 		    end of the interrupt queue */
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-	he_dev->irq_base = dma_zalloc_coherent(&he_dev->pci_dev->dev,
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-					       (CONFIG_IRQ_SIZE + 1)
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-					       * sizeof(struct he_irq),
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-					       &he_dev->irq_phys,
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-					       GFP_KERNEL);
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+	he_dev->irq_base = dma_alloc_coherent(&he_dev->pci_dev->dev,
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+					      (CONFIG_IRQ_SIZE + 1) * sizeof(struct he_irq),
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+					      &he_dev->irq_phys, GFP_KERNEL);
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 	if (he_dev->irq_base == NULL) {
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 		hprintk("failed to allocate irq\n");
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 		return -ENOMEM;
..
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@@ -1464,9 +1463,9 @@
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 	/* host status page */
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-	he_dev->hsp = dma_zalloc_coherent(&he_dev->pci_dev->dev,
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-					  sizeof(struct he_hsp),
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-					  &he_dev->hsp_phys, GFP_KERNEL);
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+	he_dev->hsp = dma_alloc_coherent(&he_dev->pci_dev->dev,
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+					 sizeof(struct he_hsp),
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+					 &he_dev->hsp_phys, GFP_KERNEL);
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 	if (he_dev->hsp == NULL) {
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 		hprintk("failed to allocate host status page\n");
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 		return -ENOMEM;
..
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@@ -1691,7 +1690,7 @@
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 		if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) {
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 			hprintk("HBUF_ERR!  (cid 0x%x)\n", cid);
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-				atomic_inc(&vcc->stats->rx_drop);
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+			atomic_inc(&vcc->stats->rx_drop);
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 			goto return_host_buffers;
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 		}
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..
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@@ -1945,14 +1944,14 @@
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 		switch (type) {
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 			case ITYPE_RBRQ_THRESH:
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 				HPRINTK("rbrq%d threshold\n", group);
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-				/* fall through */
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+				fallthrough;
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 			case ITYPE_RBRQ_TIMER:
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 				if (he_service_rbrq(he_dev, group))
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 					he_service_rbpl(he_dev, group);
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 				break;
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 			case ITYPE_TBRQ_THRESH:
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 				HPRINTK("tbrq%d threshold\n", group);
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-				/* fall through */
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+				fallthrough;
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 			case ITYPE_TPD_COMPLETE:
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 				he_service_tbrq(he_dev, group);
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 				break;
..
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@@ -2581,10 +2580,9 @@
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 			slot = 0;
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 		}
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-		tpd->iovec[slot].addr = dma_map_single(&he_dev->pci_dev->dev,
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-			(void *) page_address(frag->page) + frag->page_offset,
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-				frag->size, DMA_TO_DEVICE);
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-		tpd->iovec[slot].len = frag->size;
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+		tpd->iovec[slot].addr = skb_frag_dma_map(&he_dev->pci_dev->dev,
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+				frag, 0, skb_frag_size(frag), DMA_TO_DEVICE);
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+		tpd->iovec[slot].len = skb_frag_size(frag);
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 		++slot;
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 	}