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authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>2021-01-17 11:15:42 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-01-15 20:48:05 +0300
commitc492f9c7d313d099a7072215923513e629041706 (patch)
tree15966f70842be171842876e0ccb1c1a8c70c5c7a
parent53e92564c56ac73cf2a656354a2ee03701847b9c (diff)
downloadlinux-c492f9c7d313d099a7072215923513e629041706.tar.xz
net/qla3xxx: switch from 'pci_' to 'dma_' API
[ Upstream commit 41fb4c1ba7478fe34c7e094e124e4ee4513b9763 ] The wrappers in include/linux/pci-dma-compat.h should go away. The patch has been generated with the coccinelle script below and has been hand modified to replace GFP_ with a correct flag. It has been compile tested. When memory is allocated in 'ql_alloc_net_req_rsp_queues()' GFP_KERNEL can be used because it is only called from 'ql_alloc_mem_resources()' which already calls 'ql_alloc_buffer_queues()' which uses GFP_KERNEL. (see below) When memory is allocated in 'ql_alloc_buffer_queues()' GFP_KERNEL can be used because this flag is already used just a few line above. When memory is allocated in 'ql_alloc_small_buffers()' GFP_KERNEL can be used because it is only called from 'ql_alloc_mem_resources()' which already calls 'ql_alloc_buffer_queues()' which uses GFP_KERNEL. (see above) When memory is allocated in 'ql_alloc_mem_resources()' GFP_KERNEL can be used because this function already calls 'ql_alloc_buffer_queues()' which uses GFP_KERNEL. (see above) While at it, use 'dma_set_mask_and_coherent()' instead of 'dma_set_mask()/ dma_set_coherent_mask()' in order to slightly simplify code. @@ @@ - PCI_DMA_BIDIRECTIONAL + DMA_BIDIRECTIONAL @@ @@ - PCI_DMA_TODEVICE + DMA_TO_DEVICE @@ @@ - PCI_DMA_FROMDEVICE + DMA_FROM_DEVICE @@ @@ - PCI_DMA_NONE + DMA_NONE @@ expression e1, e2, e3; @@ - pci_alloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3; @@ - pci_zalloc_consistent(e1, e2, e3) + dma_alloc_coherent(&e1->dev, e2, e3, GFP_) @@ expression e1, e2, e3, e4; @@ - pci_free_consistent(e1, e2, e3, e4) + dma_free_coherent(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_single(e1, e2, e3, e4) + dma_map_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_single(e1, e2, e3, e4) + dma_unmap_single(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4, e5; @@ - pci_map_page(e1, e2, e3, e4, e5) + dma_map_page(&e1->dev, e2, e3, e4, e5) @@ expression e1, e2, e3, e4; @@ - pci_unmap_page(e1, e2, e3, e4) + dma_unmap_page(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_map_sg(e1, e2, e3, e4) + dma_map_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_unmap_sg(e1, e2, e3, e4) + dma_unmap_sg(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_cpu(e1, e2, e3, e4) + dma_sync_single_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_single_for_device(e1, e2, e3, e4) + dma_sync_single_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_cpu(e1, e2, e3, e4) + dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4) @@ expression e1, e2, e3, e4; @@ - pci_dma_sync_sg_for_device(e1, e2, e3, e4) + dma_sync_sg_for_device(&e1->dev, e2, e3, e4) @@ expression e1, e2; @@ - pci_dma_mapping_error(e1, e2) + dma_mapping_error(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_dma_mask(e1, e2) + dma_set_mask(&e1->dev, e2) @@ expression e1, e2; @@ - pci_set_consistent_dma_mask(e1, e2) + dma_set_coherent_mask(&e1->dev, e2) Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/20210117081542.560021-1-christophe.jaillet@wanadoo.fr Signed-off-by: Jakub Kicinski <kuba@kernel.org> Stable-dep-of: 89f45c30172c ("net/qla3xxx: fix potential memleak in ql_alloc_buffer_queues") Signed-off-by: Sasha Levin <sashal@kernel.org>
-rw-r--r--drivers/net/ethernet/qlogic/qla3xxx.c196
1 files changed, 87 insertions, 109 deletions
diff --git a/drivers/net/ethernet/qlogic/qla3xxx.c b/drivers/net/ethernet/qlogic/qla3xxx.c
index 99fd35a8ca75..29837e533cee 100644
--- a/drivers/net/ethernet/qlogic/qla3xxx.c
+++ b/drivers/net/ethernet/qlogic/qla3xxx.c
@@ -315,12 +315,11 @@ static void ql_release_to_lrg_buf_free_list(struct ql3_adapter *qdev,
* buffer
*/
skb_reserve(lrg_buf_cb->skb, QL_HEADER_SPACE);
- map = pci_map_single(qdev->pdev,
+ map = dma_map_single(&qdev->pdev->dev,
lrg_buf_cb->skb->data,
- qdev->lrg_buffer_len -
- QL_HEADER_SPACE,
- PCI_DMA_FROMDEVICE);
- err = pci_dma_mapping_error(qdev->pdev, map);
+ qdev->lrg_buffer_len - QL_HEADER_SPACE,
+ DMA_FROM_DEVICE);
+ err = dma_mapping_error(&qdev->pdev->dev, map);
if (err) {
netdev_err(qdev->ndev,
"PCI mapping failed with error: %d\n",
@@ -1802,13 +1801,12 @@ static int ql_populate_free_queue(struct ql3_adapter *qdev)
* first buffer
*/
skb_reserve(lrg_buf_cb->skb, QL_HEADER_SPACE);
- map = pci_map_single(qdev->pdev,
+ map = dma_map_single(&qdev->pdev->dev,
lrg_buf_cb->skb->data,
- qdev->lrg_buffer_len -
- QL_HEADER_SPACE,
- PCI_DMA_FROMDEVICE);
+ qdev->lrg_buffer_len - QL_HEADER_SPACE,
+ DMA_FROM_DEVICE);
- err = pci_dma_mapping_error(qdev->pdev, map);
+ err = dma_mapping_error(&qdev->pdev->dev, map);
if (err) {
netdev_err(qdev->ndev,
"PCI mapping failed with error: %d\n",
@@ -1943,18 +1941,16 @@ static void ql_process_mac_tx_intr(struct ql3_adapter *qdev,
goto invalid_seg_count;
}
- pci_unmap_single(qdev->pdev,
+ dma_unmap_single(&qdev->pdev->dev,
dma_unmap_addr(&tx_cb->map[0], mapaddr),
- dma_unmap_len(&tx_cb->map[0], maplen),
- PCI_DMA_TODEVICE);
+ dma_unmap_len(&tx_cb->map[0], maplen), DMA_TO_DEVICE);
tx_cb->seg_count--;
if (tx_cb->seg_count) {
for (i = 1; i < tx_cb->seg_count; i++) {
- pci_unmap_page(qdev->pdev,
- dma_unmap_addr(&tx_cb->map[i],
- mapaddr),
+ dma_unmap_page(&qdev->pdev->dev,
+ dma_unmap_addr(&tx_cb->map[i], mapaddr),
dma_unmap_len(&tx_cb->map[i], maplen),
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
}
}
qdev->ndev->stats.tx_packets++;
@@ -2021,10 +2017,9 @@ static void ql_process_mac_rx_intr(struct ql3_adapter *qdev,
qdev->ndev->stats.rx_bytes += length;
skb_put(skb, length);
- pci_unmap_single(qdev->pdev,
+ dma_unmap_single(&qdev->pdev->dev,
dma_unmap_addr(lrg_buf_cb2, mapaddr),
- dma_unmap_len(lrg_buf_cb2, maplen),
- PCI_DMA_FROMDEVICE);
+ dma_unmap_len(lrg_buf_cb2, maplen), DMA_FROM_DEVICE);
prefetch(skb->data);
skb_checksum_none_assert(skb);
skb->protocol = eth_type_trans(skb, qdev->ndev);
@@ -2067,10 +2062,9 @@ static void ql_process_macip_rx_intr(struct ql3_adapter *qdev,
skb2 = lrg_buf_cb2->skb;
skb_put(skb2, length); /* Just the second buffer length here. */
- pci_unmap_single(qdev->pdev,
+ dma_unmap_single(&qdev->pdev->dev,
dma_unmap_addr(lrg_buf_cb2, mapaddr),
- dma_unmap_len(lrg_buf_cb2, maplen),
- PCI_DMA_FROMDEVICE);
+ dma_unmap_len(lrg_buf_cb2, maplen), DMA_FROM_DEVICE);
prefetch(skb2->data);
skb_checksum_none_assert(skb2);
@@ -2319,9 +2313,9 @@ static int ql_send_map(struct ql3_adapter *qdev,
/*
* Map the skb buffer first.
*/
- map = pci_map_single(qdev->pdev, skb->data, len, PCI_DMA_TODEVICE);
+ map = dma_map_single(&qdev->pdev->dev, skb->data, len, DMA_TO_DEVICE);
- err = pci_dma_mapping_error(qdev->pdev, map);
+ err = dma_mapping_error(&qdev->pdev->dev, map);
if (err) {
netdev_err(qdev->ndev, "PCI mapping failed with error: %d\n",
err);
@@ -2357,11 +2351,11 @@ static int ql_send_map(struct ql3_adapter *qdev,
(seg == 7 && seg_cnt > 8) ||
(seg == 12 && seg_cnt > 13) ||
(seg == 17 && seg_cnt > 18)) {
- map = pci_map_single(qdev->pdev, oal,
+ map = dma_map_single(&qdev->pdev->dev, oal,
sizeof(struct oal),
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
- err = pci_dma_mapping_error(qdev->pdev, map);
+ err = dma_mapping_error(&qdev->pdev->dev, map);
if (err) {
netdev_err(qdev->ndev,
"PCI mapping outbound address list with error: %d\n",
@@ -2423,24 +2417,24 @@ map_error:
(seg == 7 && seg_cnt > 8) ||
(seg == 12 && seg_cnt > 13) ||
(seg == 17 && seg_cnt > 18)) {
- pci_unmap_single(qdev->pdev,
- dma_unmap_addr(&tx_cb->map[seg], mapaddr),
- dma_unmap_len(&tx_cb->map[seg], maplen),
- PCI_DMA_TODEVICE);
+ dma_unmap_single(&qdev->pdev->dev,
+ dma_unmap_addr(&tx_cb->map[seg], mapaddr),
+ dma_unmap_len(&tx_cb->map[seg], maplen),
+ DMA_TO_DEVICE);
oal++;
seg++;
}
- pci_unmap_page(qdev->pdev,
+ dma_unmap_page(&qdev->pdev->dev,
dma_unmap_addr(&tx_cb->map[seg], mapaddr),
dma_unmap_len(&tx_cb->map[seg], maplen),
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
}
- pci_unmap_single(qdev->pdev,
+ dma_unmap_single(&qdev->pdev->dev,
dma_unmap_addr(&tx_cb->map[0], mapaddr),
dma_unmap_addr(&tx_cb->map[0], maplen),
- PCI_DMA_TODEVICE);
+ DMA_TO_DEVICE);
return NETDEV_TX_BUSY;
@@ -2526,9 +2520,8 @@ static int ql_alloc_net_req_rsp_queues(struct ql3_adapter *qdev)
wmb();
qdev->req_q_virt_addr =
- pci_alloc_consistent(qdev->pdev,
- (size_t) qdev->req_q_size,
- &qdev->req_q_phy_addr);
+ dma_alloc_coherent(&qdev->pdev->dev, (size_t)qdev->req_q_size,
+ &qdev->req_q_phy_addr, GFP_KERNEL);
if ((qdev->req_q_virt_addr == NULL) ||
LS_64BITS(qdev->req_q_phy_addr) & (qdev->req_q_size - 1)) {
@@ -2537,16 +2530,14 @@ static int ql_alloc_net_req_rsp_queues(struct ql3_adapter *qdev)
}
qdev->rsp_q_virt_addr =
- pci_alloc_consistent(qdev->pdev,
- (size_t) qdev->rsp_q_size,
- &qdev->rsp_q_phy_addr);
+ dma_alloc_coherent(&qdev->pdev->dev, (size_t)qdev->rsp_q_size,
+ &qdev->rsp_q_phy_addr, GFP_KERNEL);
if ((qdev->rsp_q_virt_addr == NULL) ||
LS_64BITS(qdev->rsp_q_phy_addr) & (qdev->rsp_q_size - 1)) {
netdev_err(qdev->ndev, "rspQ allocation failed\n");
- pci_free_consistent(qdev->pdev, (size_t) qdev->req_q_size,
- qdev->req_q_virt_addr,
- qdev->req_q_phy_addr);
+ dma_free_coherent(&qdev->pdev->dev, (size_t)qdev->req_q_size,
+ qdev->req_q_virt_addr, qdev->req_q_phy_addr);
return -ENOMEM;
}
@@ -2562,15 +2553,13 @@ static void ql_free_net_req_rsp_queues(struct ql3_adapter *qdev)
return;
}
- pci_free_consistent(qdev->pdev,
- qdev->req_q_size,
- qdev->req_q_virt_addr, qdev->req_q_phy_addr);
+ dma_free_coherent(&qdev->pdev->dev, qdev->req_q_size,
+ qdev->req_q_virt_addr, qdev->req_q_phy_addr);
qdev->req_q_virt_addr = NULL;
- pci_free_consistent(qdev->pdev,
- qdev->rsp_q_size,
- qdev->rsp_q_virt_addr, qdev->rsp_q_phy_addr);
+ dma_free_coherent(&qdev->pdev->dev, qdev->rsp_q_size,
+ qdev->rsp_q_virt_addr, qdev->rsp_q_phy_addr);
qdev->rsp_q_virt_addr = NULL;
@@ -2594,9 +2583,9 @@ static int ql_alloc_buffer_queues(struct ql3_adapter *qdev)
return -ENOMEM;
qdev->lrg_buf_q_alloc_virt_addr =
- pci_alloc_consistent(qdev->pdev,
- qdev->lrg_buf_q_alloc_size,
- &qdev->lrg_buf_q_alloc_phy_addr);
+ dma_alloc_coherent(&qdev->pdev->dev,
+ qdev->lrg_buf_q_alloc_size,
+ &qdev->lrg_buf_q_alloc_phy_addr, GFP_KERNEL);
if (qdev->lrg_buf_q_alloc_virt_addr == NULL) {
netdev_err(qdev->ndev, "lBufQ failed\n");
@@ -2614,15 +2603,16 @@ static int ql_alloc_buffer_queues(struct ql3_adapter *qdev)
qdev->small_buf_q_alloc_size = qdev->small_buf_q_size * 2;
qdev->small_buf_q_alloc_virt_addr =
- pci_alloc_consistent(qdev->pdev,
- qdev->small_buf_q_alloc_size,
- &qdev->small_buf_q_alloc_phy_addr);
+ dma_alloc_coherent(&qdev->pdev->dev,
+ qdev->small_buf_q_alloc_size,
+ &qdev->small_buf_q_alloc_phy_addr, GFP_KERNEL);
if (qdev->small_buf_q_alloc_virt_addr == NULL) {
netdev_err(qdev->ndev, "Small Buffer Queue allocation failed\n");
- pci_free_consistent(qdev->pdev, qdev->lrg_buf_q_alloc_size,
- qdev->lrg_buf_q_alloc_virt_addr,
- qdev->lrg_buf_q_alloc_phy_addr);
+ dma_free_coherent(&qdev->pdev->dev,
+ qdev->lrg_buf_q_alloc_size,
+ qdev->lrg_buf_q_alloc_virt_addr,
+ qdev->lrg_buf_q_alloc_phy_addr);
return -ENOMEM;
}
@@ -2639,17 +2629,15 @@ static void ql_free_buffer_queues(struct ql3_adapter *qdev)
return;
}
kfree(qdev->lrg_buf);
- pci_free_consistent(qdev->pdev,
- qdev->lrg_buf_q_alloc_size,
- qdev->lrg_buf_q_alloc_virt_addr,
- qdev->lrg_buf_q_alloc_phy_addr);
+ dma_free_coherent(&qdev->pdev->dev, qdev->lrg_buf_q_alloc_size,
+ qdev->lrg_buf_q_alloc_virt_addr,
+ qdev->lrg_buf_q_alloc_phy_addr);
qdev->lrg_buf_q_virt_addr = NULL;
- pci_free_consistent(qdev->pdev,
- qdev->small_buf_q_alloc_size,
- qdev->small_buf_q_alloc_virt_addr,
- qdev->small_buf_q_alloc_phy_addr);
+ dma_free_coherent(&qdev->pdev->dev, qdev->small_buf_q_alloc_size,
+ qdev->small_buf_q_alloc_virt_addr,
+ qdev->small_buf_q_alloc_phy_addr);
qdev->small_buf_q_virt_addr = NULL;
@@ -2667,9 +2655,9 @@ static int ql_alloc_small_buffers(struct ql3_adapter *qdev)
QL_SMALL_BUFFER_SIZE);
qdev->small_buf_virt_addr =
- pci_alloc_consistent(qdev->pdev,
- qdev->small_buf_total_size,
- &qdev->small_buf_phy_addr);
+ dma_alloc_coherent(&qdev->pdev->dev,
+ qdev->small_buf_total_size,
+ &qdev->small_buf_phy_addr, GFP_KERNEL);
if (qdev->small_buf_virt_addr == NULL) {
netdev_err(qdev->ndev, "Failed to get small buffer memory\n");
@@ -2702,10 +2690,10 @@ static void ql_free_small_buffers(struct ql3_adapter *qdev)
return;
}
if (qdev->small_buf_virt_addr != NULL) {
- pci_free_consistent(qdev->pdev,
- qdev->small_buf_total_size,
- qdev->small_buf_virt_addr,
- qdev->small_buf_phy_addr);
+ dma_free_coherent(&qdev->pdev->dev,
+ qdev->small_buf_total_size,
+ qdev->small_buf_virt_addr,
+ qdev->small_buf_phy_addr);
qdev->small_buf_virt_addr = NULL;
}
@@ -2720,10 +2708,10 @@ static void ql_free_large_buffers(struct ql3_adapter *qdev)
lrg_buf_cb = &qdev->lrg_buf[i];
if (lrg_buf_cb->skb) {
dev_kfree_skb(lrg_buf_cb->skb);
- pci_unmap_single(qdev->pdev,
+ dma_unmap_single(&qdev->pdev->dev,
dma_unmap_addr(lrg_buf_cb, mapaddr),
dma_unmap_len(lrg_buf_cb, maplen),
- PCI_DMA_FROMDEVICE);
+ DMA_FROM_DEVICE);
memset(lrg_buf_cb, 0, sizeof(struct ql_rcv_buf_cb));
} else {
break;
@@ -2775,13 +2763,11 @@ static int ql_alloc_large_buffers(struct ql3_adapter *qdev)
* buffer
*/
skb_reserve(skb, QL_HEADER_SPACE);
- map = pci_map_single(qdev->pdev,
- skb->data,
- qdev->lrg_buffer_len -
- QL_HEADER_SPACE,
- PCI_DMA_FROMDEVICE);
+ map = dma_map_single(&qdev->pdev->dev, skb->data,
+ qdev->lrg_buffer_len - QL_HEADER_SPACE,
+ DMA_FROM_DEVICE);
- err = pci_dma_mapping_error(qdev->pdev, map);
+ err = dma_mapping_error(&qdev->pdev->dev, map);
if (err) {
netdev_err(qdev->ndev,
"PCI mapping failed with error: %d\n",
@@ -2866,8 +2852,8 @@ static int ql_alloc_mem_resources(struct ql3_adapter *qdev)
* Network Completion Queue Producer Index Register
*/
qdev->shadow_reg_virt_addr =
- pci_alloc_consistent(qdev->pdev,
- PAGE_SIZE, &qdev->shadow_reg_phy_addr);
+ dma_alloc_coherent(&qdev->pdev->dev, PAGE_SIZE,
+ &qdev->shadow_reg_phy_addr, GFP_KERNEL);
if (qdev->shadow_reg_virt_addr != NULL) {
qdev->preq_consumer_index = qdev->shadow_reg_virt_addr;
@@ -2922,10 +2908,9 @@ err_small_buffers:
err_buffer_queues:
ql_free_net_req_rsp_queues(qdev);
err_req_rsp:
- pci_free_consistent(qdev->pdev,
- PAGE_SIZE,
- qdev->shadow_reg_virt_addr,
- qdev->shadow_reg_phy_addr);
+ dma_free_coherent(&qdev->pdev->dev, PAGE_SIZE,
+ qdev->shadow_reg_virt_addr,
+ qdev->shadow_reg_phy_addr);
return -ENOMEM;
}
@@ -2938,10 +2923,9 @@ static void ql_free_mem_resources(struct ql3_adapter *qdev)
ql_free_buffer_queues(qdev);
ql_free_net_req_rsp_queues(qdev);
if (qdev->shadow_reg_virt_addr != NULL) {
- pci_free_consistent(qdev->pdev,
- PAGE_SIZE,
- qdev->shadow_reg_virt_addr,
- qdev->shadow_reg_phy_addr);
+ dma_free_coherent(&qdev->pdev->dev, PAGE_SIZE,
+ qdev->shadow_reg_virt_addr,
+ qdev->shadow_reg_phy_addr);
qdev->shadow_reg_virt_addr = NULL;
}
}
@@ -3642,18 +3626,15 @@ static void ql_reset_work(struct work_struct *work)
if (tx_cb->skb) {
netdev_printk(KERN_DEBUG, ndev,
"Freeing lost SKB\n");
- pci_unmap_single(qdev->pdev,
- dma_unmap_addr(&tx_cb->map[0],
- mapaddr),
- dma_unmap_len(&tx_cb->map[0], maplen),
- PCI_DMA_TODEVICE);
+ dma_unmap_single(&qdev->pdev->dev,
+ dma_unmap_addr(&tx_cb->map[0], mapaddr),
+ dma_unmap_len(&tx_cb->map[0], maplen),
+ DMA_TO_DEVICE);
for (j = 1; j < tx_cb->seg_count; j++) {
- pci_unmap_page(qdev->pdev,
- dma_unmap_addr(&tx_cb->map[j],
- mapaddr),
- dma_unmap_len(&tx_cb->map[j],
- maplen),
- PCI_DMA_TODEVICE);
+ dma_unmap_page(&qdev->pdev->dev,
+ dma_unmap_addr(&tx_cb->map[j], mapaddr),
+ dma_unmap_len(&tx_cb->map[j], maplen),
+ DMA_TO_DEVICE);
}
dev_kfree_skb(tx_cb->skb);
tx_cb->skb = NULL;
@@ -3785,13 +3766,10 @@ static int ql3xxx_probe(struct pci_dev *pdev,
pci_set_master(pdev);
- if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
+ if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)))
pci_using_dac = 1;
- err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
- } else if (!(err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) {
+ else if (!(err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))))
pci_using_dac = 0;
- err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
- }
if (err) {
pr_err("%s no usable DMA configuration\n", pci_name(pdev));