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path: root/drivers/infiniband/hw/nes
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Diffstat (limited to 'drivers/infiniband/hw/nes')
-rw-r--r--drivers/infiniband/hw/nes/Kconfig2
-rw-r--r--drivers/infiniband/hw/nes/nes_verbs.c281
-rw-r--r--drivers/infiniband/hw/nes/nes_verbs.h1
3 files changed, 112 insertions, 172 deletions
diff --git a/drivers/infiniband/hw/nes/Kconfig b/drivers/infiniband/hw/nes/Kconfig
index 7964eba8e7ed..52caae954e4a 100644
--- a/drivers/infiniband/hw/nes/Kconfig
+++ b/drivers/infiniband/hw/nes/Kconfig
@@ -1,6 +1,6 @@
config INFINIBAND_NES
tristate "NetEffect RNIC Driver"
- depends on PCI && INET && INFINIBAND
+ depends on PCI && INET
select LIBCRC32C
---help---
This is the RDMA Network Interface Card (RNIC) driver for
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index 4e7f08ee1907..b23956aa45b8 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -41,6 +41,7 @@
#include <rdma/ib_verbs.h>
#include <rdma/iw_cm.h>
#include <rdma/ib_user_verbs.h>
+#include <rdma/uverbs_ioctl.h>
#include "nes.h"
@@ -535,7 +536,7 @@ static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
struct nes_device *nesdev = nesvnic->nesdev;
struct nes_adapter *nesadapter = nesdev->nesadapter;
struct nes_alloc_ucontext_req req;
- struct nes_alloc_ucontext_resp uresp;
+ struct nes_alloc_ucontext_resp uresp = {};
struct nes_ucontext *nes_ucontext;
struct nes_ib_device *nesibdev = nesvnic->nesibdev;
@@ -552,8 +553,6 @@ static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
}
- memset(&uresp, 0, sizeof uresp);
-
uresp.max_qps = nesibdev->max_qp;
uresp.max_pds = nesibdev->max_pd;
uresp.wq_size = nesdev->nesadapter->max_qp_wr * 2;
@@ -578,7 +577,6 @@ static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
INIT_LIST_HEAD(&nes_ucontext->cq_reg_mem_list);
INIT_LIST_HEAD(&nes_ucontext->qp_reg_mem_list);
- atomic_set(&nes_ucontext->usecnt, 1);
return &nes_ucontext->ibucontext;
}
@@ -588,12 +586,8 @@ static struct ib_ucontext *nes_alloc_ucontext(struct ib_device *ibdev,
*/
static int nes_dealloc_ucontext(struct ib_ucontext *context)
{
- /* struct nes_vnic *nesvnic = to_nesvnic(context->device); */
- /* struct nes_device *nesdev = nesvnic->nesdev; */
struct nes_ucontext *nes_ucontext = to_nesucontext(context);
- if (!atomic_dec_and_test(&nes_ucontext->usecnt))
- return 0;
kfree(nes_ucontext);
return 0;
}
@@ -658,10 +652,11 @@ static int nes_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
/**
* nes_alloc_pd
*/
-static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
- struct ib_ucontext *context, struct ib_udata *udata)
+static int nes_alloc_pd(struct ib_pd *pd, struct ib_ucontext *context,
+ struct ib_udata *udata)
{
- struct nes_pd *nespd;
+ struct ib_device *ibdev = pd->device;
+ struct nes_pd *nespd = to_nespd(pd);
struct nes_vnic *nesvnic = to_nesvnic(ibdev);
struct nes_device *nesdev = nesvnic->nesdev;
struct nes_adapter *nesadapter = nesdev->nesadapter;
@@ -676,15 +671,8 @@ static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
err = nes_alloc_resource(nesadapter, nesadapter->allocated_pds,
nesadapter->max_pd, &pd_num, &nesadapter->next_pd, NES_RESOURCE_PD);
- if (err) {
- return ERR_PTR(err);
- }
-
- nespd = kzalloc(sizeof (struct nes_pd), GFP_KERNEL);
- if (!nespd) {
- nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
- return ERR_PTR(-ENOMEM);
- }
+ if (err)
+ return err;
nes_debug(NES_DBG_PD, "Allocating PD (%p) for ib device %s\n",
nespd, dev_name(&nesvnic->nesibdev->ibdev.dev));
@@ -700,16 +688,14 @@ static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
if (nespd->mmap_db_index >= NES_MAX_USER_DB_REGIONS) {
nes_debug(NES_DBG_PD, "mmap_db_index > MAX\n");
nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
- kfree(nespd);
- return ERR_PTR(-ENOMEM);
+ return -ENOMEM;
}
uresp.pd_id = nespd->pd_id;
uresp.mmap_db_index = nespd->mmap_db_index;
if (ib_copy_to_udata(udata, &uresp, sizeof (struct nes_alloc_pd_resp))) {
nes_free_resource(nesadapter, nesadapter->allocated_pds, pd_num);
- kfree(nespd);
- return ERR_PTR(-EFAULT);
+ return -EFAULT;
}
set_bit(nespd->mmap_db_index, nesucontext->allocated_doorbells);
@@ -718,14 +704,14 @@ static struct ib_pd *nes_alloc_pd(struct ib_device *ibdev,
}
nes_debug(NES_DBG_PD, "PD%u structure located @%p.\n", nespd->pd_id, nespd);
- return &nespd->ibpd;
+ return 0;
}
/**
* nes_dealloc_pd
*/
-static int nes_dealloc_pd(struct ib_pd *ibpd)
+static void nes_dealloc_pd(struct ib_pd *ibpd)
{
struct nes_ucontext *nesucontext;
struct nes_pd *nespd = to_nespd(ibpd);
@@ -748,9 +734,6 @@ static int nes_dealloc_pd(struct ib_pd *ibpd)
nespd->pd_id, nespd);
nes_free_resource(nesadapter, nesadapter->allocated_pds,
(nespd->pd_id-nesadapter->base_pd)>>(PAGE_SHIFT-12));
- kfree(nespd);
-
- return 0;
}
@@ -985,7 +968,8 @@ static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
struct nes_adapter *nesadapter = nesdev->nesadapter;
struct nes_qp *nesqp;
struct nes_cq *nescq;
- struct nes_ucontext *nes_ucontext;
+ struct nes_ucontext *nes_ucontext = rdma_udata_to_drv_context(
+ udata, struct nes_ucontext, ibucontext);
struct nes_hw_cqp_wqe *cqp_wqe;
struct nes_cqp_request *cqp_request;
struct nes_create_qp_req req;
@@ -1066,9 +1050,8 @@ static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
}
if (req.user_qp_buffer)
nesqp->nesuqp_addr = req.user_qp_buffer;
- if (udata && (ibpd->uobject->context)) {
+ if (udata) {
nesqp->user_mode = 1;
- nes_ucontext = to_nesucontext(ibpd->uobject->context);
if (virt_wqs) {
err = 1;
list_for_each_entry(nespbl, &nes_ucontext->qp_reg_mem_list, list) {
@@ -1089,7 +1072,6 @@ static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
}
}
- nes_ucontext = to_nesucontext(ibpd->uobject->context);
nesqp->mmap_sq_db_index =
find_next_zero_bit(nes_ucontext->allocated_wqs,
NES_MAX_USER_WQ_REGIONS, nes_ucontext->first_free_wq);
@@ -2109,18 +2091,18 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
struct nes_device *nesdev = nesvnic->nesdev;
struct nes_adapter *nesadapter = nesdev->nesadapter;
struct ib_mr *ibmr = ERR_PTR(-EINVAL);
- struct scatterlist *sg;
- struct nes_ucontext *nes_ucontext;
+ struct sg_dma_page_iter dma_iter;
+ struct nes_ucontext *nes_ucontext = rdma_udata_to_drv_context(
+ udata, struct nes_ucontext, ibucontext);
struct nes_pbl *nespbl;
struct nes_mr *nesmr;
struct ib_umem *region;
struct nes_mem_reg_req req;
struct nes_vpbl vpbl;
struct nes_root_vpbl root_vpbl;
- int entry, page_index;
+ int page_index;
int page_count = 0;
int err, pbl_depth = 0;
- int chunk_pages;
int ret;
u32 stag;
u32 stag_index = 0;
@@ -2132,9 +2114,8 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
u16 pbl_count;
u8 single_page = 1;
u8 stag_key;
- int first_page = 1;
- region = ib_umem_get(pd->uobject->context, start, length, acc, 0);
+ region = ib_umem_get(udata, start, length, acc, 0);
if (IS_ERR(region)) {
return (struct ib_mr *)region;
}
@@ -2183,127 +2164,99 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
}
nesmr->region = region;
- for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
- if (sg_dma_address(sg) & ~PAGE_MASK) {
- ib_umem_release(region);
- nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
- nes_debug(NES_DBG_MR, "Unaligned Memory Buffer: 0x%x\n",
- (unsigned int) sg_dma_address(sg));
- ibmr = ERR_PTR(-EINVAL);
- kfree(nesmr);
- goto reg_user_mr_err;
- }
+ for_each_sg_dma_page (region->sg_head.sgl, &dma_iter, region->nmap, 0) {
- if (!sg_dma_len(sg)) {
- ib_umem_release(region);
- nes_free_resource(nesadapter, nesadapter->allocated_mrs,
- stag_index);
- nes_debug(NES_DBG_MR, "Invalid Buffer Size\n");
- ibmr = ERR_PTR(-EINVAL);
- kfree(nesmr);
- goto reg_user_mr_err;
- }
-
- region_length += sg_dma_len(sg);
- chunk_pages = sg_dma_len(sg) >> 12;
+ region_length += PAGE_SIZE;
region_length -= skip_pages << 12;
- for (page_index = skip_pages; page_index < chunk_pages; page_index++) {
- skip_pages = 0;
- if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
- goto enough_pages;
- if ((page_count&0x01FF) == 0) {
- if (page_count >= 1024 * 512) {
+ skip_pages = 0;
+ if ((page_count != 0) && (page_count << 12) - (ib_umem_offset(region) & (4096 - 1)) >= region->length)
+ goto enough_pages;
+ if ((page_count & 0x01FF) == 0) {
+ if (page_count >= 1024 * 512) {
+ ib_umem_release(region);
+ nes_free_resource(nesadapter,
+ nesadapter->allocated_mrs, stag_index);
+ kfree(nesmr);
+ ibmr = ERR_PTR(-E2BIG);
+ goto reg_user_mr_err;
+ }
+ if (root_pbl_index == 1) {
+ root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
+ 8192, &root_vpbl.pbl_pbase);
+ nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
+ root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
+ if (!root_vpbl.pbl_vbase) {
ib_umem_release(region);
- nes_free_resource(nesadapter,
- nesadapter->allocated_mrs, stag_index);
+ pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
+ vpbl.pbl_pbase);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs,
+ stag_index);
kfree(nesmr);
- ibmr = ERR_PTR(-E2BIG);
+ ibmr = ERR_PTR(-ENOMEM);
goto reg_user_mr_err;
}
- if (root_pbl_index == 1) {
- root_vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev,
- 8192, &root_vpbl.pbl_pbase);
- nes_debug(NES_DBG_MR, "Allocating root PBL, va = %p, pa = 0x%08X\n",
- root_vpbl.pbl_vbase, (unsigned int)root_vpbl.pbl_pbase);
- if (!root_vpbl.pbl_vbase) {
- ib_umem_release(region);
- pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
- vpbl.pbl_pbase);
- nes_free_resource(nesadapter, nesadapter->allocated_mrs,
- stag_index);
- kfree(nesmr);
- ibmr = ERR_PTR(-ENOMEM);
- goto reg_user_mr_err;
- }
- root_vpbl.leaf_vpbl = kcalloc(1024,
- sizeof(*root_vpbl.leaf_vpbl),
- GFP_KERNEL);
- if (!root_vpbl.leaf_vpbl) {
- ib_umem_release(region);
- pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
- root_vpbl.pbl_pbase);
- pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
- vpbl.pbl_pbase);
- nes_free_resource(nesadapter, nesadapter->allocated_mrs,
- stag_index);
- kfree(nesmr);
- ibmr = ERR_PTR(-ENOMEM);
- goto reg_user_mr_err;
- }
- root_vpbl.pbl_vbase[0].pa_low =
- cpu_to_le32((u32)vpbl.pbl_pbase);
- root_vpbl.pbl_vbase[0].pa_high =
- cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
- root_vpbl.leaf_vpbl[0] = vpbl;
- }
- vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
- &vpbl.pbl_pbase);
- nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
- vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
- if (!vpbl.pbl_vbase) {
+ root_vpbl.leaf_vpbl = kcalloc(1024,
+ sizeof(*root_vpbl.leaf_vpbl),
+ GFP_KERNEL);
+ if (!root_vpbl.leaf_vpbl) {
ib_umem_release(region);
- nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
- ibmr = ERR_PTR(-ENOMEM);
+ pci_free_consistent(nesdev->pcidev, 8192, root_vpbl.pbl_vbase,
+ root_vpbl.pbl_pbase);
+ pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
+ vpbl.pbl_pbase);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs,
+ stag_index);
kfree(nesmr);
+ ibmr = ERR_PTR(-ENOMEM);
goto reg_user_mr_err;
}
- if (1 <= root_pbl_index) {
- root_vpbl.pbl_vbase[root_pbl_index].pa_low =
- cpu_to_le32((u32)vpbl.pbl_pbase);
- root_vpbl.pbl_vbase[root_pbl_index].pa_high =
- cpu_to_le32((u32)((((u64)vpbl.pbl_pbase)>>32)));
- root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
- }
- root_pbl_index++;
- cur_pbl_index = 0;
+ root_vpbl.pbl_vbase[0].pa_low =
+ cpu_to_le32((u32)vpbl.pbl_pbase);
+ root_vpbl.pbl_vbase[0].pa_high =
+ cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
+ root_vpbl.leaf_vpbl[0] = vpbl;
}
- if (single_page) {
- if (page_count != 0) {
- if ((last_dma_addr+4096) !=
- (sg_dma_address(sg)+
- (page_index*4096)))
- single_page = 0;
- last_dma_addr = sg_dma_address(sg)+
- (page_index*4096);
- } else {
- first_dma_addr = sg_dma_address(sg)+
- (page_index*4096);
- last_dma_addr = first_dma_addr;
- }
+ vpbl.pbl_vbase = pci_alloc_consistent(nesdev->pcidev, 4096,
+ &vpbl.pbl_pbase);
+ nes_debug(NES_DBG_MR, "Allocating leaf PBL, va = %p, pa = 0x%08X\n",
+ vpbl.pbl_vbase, (unsigned int)vpbl.pbl_pbase);
+ if (!vpbl.pbl_vbase) {
+ ib_umem_release(region);
+ nes_free_resource(nesadapter, nesadapter->allocated_mrs, stag_index);
+ ibmr = ERR_PTR(-ENOMEM);
+ kfree(nesmr);
+ goto reg_user_mr_err;
+ }
+ if (1 <= root_pbl_index) {
+ root_vpbl.pbl_vbase[root_pbl_index].pa_low =
+ cpu_to_le32((u32)vpbl.pbl_pbase);
+ root_vpbl.pbl_vbase[root_pbl_index].pa_high =
+ cpu_to_le32((u32)((((u64)vpbl.pbl_pbase) >> 32)));
+ root_vpbl.leaf_vpbl[root_pbl_index] = vpbl;
+ }
+ root_pbl_index++;
+ cur_pbl_index = 0;
+ }
+ if (single_page) {
+ if (page_count != 0) {
+ if ((last_dma_addr + 4096) != sg_page_iter_dma_address(&dma_iter))
+ single_page = 0;
+ last_dma_addr = sg_page_iter_dma_address(&dma_iter);
+ } else {
+ first_dma_addr = sg_page_iter_dma_address(&dma_iter);
+ last_dma_addr = first_dma_addr;
}
-
- vpbl.pbl_vbase[cur_pbl_index].pa_low =
- cpu_to_le32((u32)(sg_dma_address(sg)+
- (page_index*4096)));
- vpbl.pbl_vbase[cur_pbl_index].pa_high =
- cpu_to_le32((u32)((((u64)(sg_dma_address(sg)+
- (page_index*4096))) >> 32)));
- cur_pbl_index++;
- page_count++;
}
+
+ vpbl.pbl_vbase[cur_pbl_index].pa_low =
+ cpu_to_le32((u32)(sg_page_iter_dma_address(&dma_iter)));
+ vpbl.pbl_vbase[cur_pbl_index].pa_high =
+ cpu_to_le32((u32)((u64)(sg_page_iter_dma_address(&dma_iter))));
+ cur_pbl_index++;
+ page_count++;
}
- enough_pages:
+enough_pages:
nes_debug(NES_DBG_MR, "calculating stag, stag_index=0x%08x, driver_key=0x%08x,"
" stag_key=0x%08x\n",
stag_index, driver_key, stag_key);
@@ -2345,7 +2298,7 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
ibmr = ERR_PTR(-ENOMEM);
}
- reg_user_mr_err:
+reg_user_mr_err:
/* free the resources */
if (root_pbl_index == 1) {
pci_free_consistent(nesdev->pcidev, 4096, vpbl.pbl_vbase,
@@ -2383,7 +2336,6 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
return ERR_PTR(-ENOMEM);
}
nesmr->region = region;
- nes_ucontext = to_nesucontext(pd->uobject->context);
pbl_depth = region->length >> 12;
pbl_depth += (region->length & (4096-1)) ? 1 : 0;
nespbl->pbl_size = pbl_depth*sizeof(u64);
@@ -2412,26 +2364,14 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
nespbl->pbl_size, (unsigned long) nespbl->pbl_pbase,
(void *) nespbl->pbl_vbase, nespbl->user_base);
- for_each_sg(region->sg_head.sgl, sg, region->nmap, entry) {
- chunk_pages = sg_dma_len(sg) >> 12;
- chunk_pages += (sg_dma_len(sg) & (4096-1)) ? 1 : 0;
- if (first_page) {
- nespbl->page = sg_page(sg);
- first_page = 0;
- }
-
- for (page_index = 0; page_index < chunk_pages; page_index++) {
- ((__le32 *)pbl)[0] = cpu_to_le32((u32)
- (sg_dma_address(sg)+
- (page_index*4096)));
- ((__le32 *)pbl)[1] = cpu_to_le32(((u64)
- (sg_dma_address(sg)+
- (page_index*4096)))>>32);
- nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
- (unsigned long long)*pbl,
- le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
- pbl++;
- }
+ nespbl->page = sg_page(region->sg_head.sgl);
+ for_each_sg_dma_page(region->sg_head.sgl, &dma_iter, region->nmap, 0) {
+ ((__le32 *)pbl)[0] = cpu_to_le32((u32)(sg_page_iter_dma_address(&dma_iter)));
+ ((__le32 *)pbl)[1] = cpu_to_le32(((u64)(sg_page_iter_dma_address(&dma_iter)))>>32);
+ nes_debug(NES_DBG_MR, "pbl=%p, *pbl=0x%016llx, 0x%08x%08x\n", pbl,
+ (unsigned long long)*pbl,
+ le32_to_cpu(((__le32 *)pbl)[1]), le32_to_cpu(((__le32 *)pbl)[0]));
+ pbl++;
}
if (req.reg_type == IWNES_MEMREG_TYPE_QP) {
@@ -2560,7 +2500,7 @@ static ssize_t hw_rev_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct nes_ib_device *nesibdev =
- container_of(dev, struct nes_ib_device, ibdev.dev);
+ rdma_device_to_drv_device(dev, struct nes_ib_device, ibdev);
struct nes_vnic *nesvnic = nesibdev->nesvnic;
nes_debug(NES_DBG_INIT, "\n");
@@ -3658,6 +3598,7 @@ static const struct ib_device_ops nes_dev_ops = {
.query_qp = nes_query_qp,
.reg_user_mr = nes_reg_user_mr,
.req_notify_cq = nes_req_notify_cq,
+ INIT_RDMA_OBJ_SIZE(ib_pd, nes_pd, ibpd),
};
/**
@@ -3669,7 +3610,7 @@ struct nes_ib_device *nes_init_ofa_device(struct net_device *netdev)
struct nes_vnic *nesvnic = netdev_priv(netdev);
struct nes_device *nesdev = nesvnic->nesdev;
- nesibdev = (struct nes_ib_device *)ib_alloc_device(sizeof(struct nes_ib_device));
+ nesibdev = ib_alloc_device(nes_ib_device, ibdev);
if (nesibdev == NULL) {
return NULL;
}
@@ -3801,7 +3742,7 @@ int nes_register_ofa_device(struct nes_ib_device *nesibdev)
rdma_set_device_sysfs_group(&nesvnic->nesibdev->ibdev, &nes_attr_group);
nesvnic->nesibdev->ibdev.driver_id = RDMA_DRIVER_NES;
- ret = ib_register_device(&nesvnic->nesibdev->ibdev, "nes%d", NULL);
+ ret = ib_register_device(&nesvnic->nesibdev->ibdev, "nes%d");
if (ret) {
return ret;
}
diff --git a/drivers/infiniband/hw/nes/nes_verbs.h b/drivers/infiniband/hw/nes/nes_verbs.h
index e02a5662dc20..114a9b59fefd 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.h
+++ b/drivers/infiniband/hw/nes/nes_verbs.h
@@ -59,7 +59,6 @@ struct nes_ucontext {
struct list_head cq_reg_mem_list;
struct list_head qp_reg_mem_list;
u32 mcrqf;
- atomic_t usecnt;
};
struct nes_pd {