IB: remove ib_query_mr

This functionality has no users and was only supported by the staged out
EHCA driver.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> [core]
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/core/verbs.c

@@ -1352,13 +1352,6 @@ struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags)
 }
 EXPORT_SYMBOL(ib_get_dma_mr);
 
-int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
-{
-	return mr->device->query_mr ?
-		mr->device->query_mr(mr, mr_attr) : -ENOSYS;
-}
-EXPORT_SYMBOL(ib_query_mr);
-
 int ib_dereg_mr(struct ib_mr *mr)
 {
 	struct ib_pd *pd;

drivers/staging/rdma/ehca/ehca_iverbs.h

@@ -95,8 +95,6 @@ int ehca_rereg_phys_mr(struct ib_mr *mr,
 		       struct ib_phys_buf *phys_buf_array,
 		       int num_phys_buf, int mr_access_flags, u64 *iova_start);
 
-int ehca_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
-
 int ehca_dereg_mr(struct ib_mr *mr);
 
 struct ib_mw *ehca_alloc_mw(struct ib_pd *pd, enum ib_mw_type type);

drivers/staging/rdma/ehca/ehca_main.c

@@ -514,7 +514,6 @@ static int ehca_init_device(struct ehca_shca *shca)
 	shca->ib_device.get_dma_mr	    = ehca_get_dma_mr;
 	shca->ib_device.reg_phys_mr	    = ehca_reg_phys_mr;
 	shca->ib_device.reg_user_mr	    = ehca_reg_user_mr;
-	shca->ib_device.query_mr	    = ehca_query_mr;
 	shca->ib_device.dereg_mr	    = ehca_dereg_mr;
 	shca->ib_device.rereg_phys_mr	    = ehca_rereg_phys_mr;
 	shca->ib_device.alloc_mw	    = ehca_alloc_mw;

drivers/staging/rdma/ehca/ehca_mrmw.c

@@ -589,55 +589,6 @@ rereg_phys_mr_exit0:
 	return ret;
 } /* end ehca_rereg_phys_mr() */
 
-/*----------------------------------------------------------------------*/
-
-int ehca_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr)
-{
-	int ret = 0;
-	u64 h_ret;
-	struct ehca_shca *shca =
-		container_of(mr->device, struct ehca_shca, ib_device);
-	struct ehca_mr *e_mr = container_of(mr, struct ehca_mr, ib.ib_mr);
-	unsigned long sl_flags;
-	struct ehca_mr_hipzout_parms hipzout;
-
-	if ((e_mr->flags & EHCA_MR_FLAG_FMR)) {
-		ehca_err(mr->device, "not supported for FMR, mr=%p e_mr=%p "
-			 "e_mr->flags=%x", mr, e_mr, e_mr->flags);
-		ret = -EINVAL;
-		goto query_mr_exit0;
-	}
-
-	memset(mr_attr, 0, sizeof(struct ib_mr_attr));
-	spin_lock_irqsave(&e_mr->mrlock, sl_flags);
-
-	h_ret = hipz_h_query_mr(shca->ipz_hca_handle, e_mr, &hipzout);
-	if (h_ret != H_SUCCESS) {
-		ehca_err(mr->device, "hipz_mr_query failed, h_ret=%lli mr=%p "
-			 "hca_hndl=%llx mr_hndl=%llx lkey=%x",
-			 h_ret, mr, shca->ipz_hca_handle.handle,
-			 e_mr->ipz_mr_handle.handle, mr->lkey);
-		ret = ehca2ib_return_code(h_ret);
-		goto query_mr_exit1;
-	}
-	mr_attr->pd = mr->pd;
-	mr_attr->device_virt_addr = hipzout.vaddr;
-	mr_attr->size = hipzout.len;
-	mr_attr->lkey = hipzout.lkey;
-	mr_attr->rkey = hipzout.rkey;
-	ehca_mrmw_reverse_map_acl(&hipzout.acl, &mr_attr->mr_access_flags);
-
-query_mr_exit1:
-	spin_unlock_irqrestore(&e_mr->mrlock, sl_flags);
-query_mr_exit0:
-	if (ret)
-		ehca_err(mr->device, "ret=%i mr=%p mr_attr=%p",
-			 ret, mr, mr_attr);
-	return ret;
-} /* end ehca_query_mr() */
-
-/*----------------------------------------------------------------------*/
-
 int ehca_dereg_mr(struct ib_mr *mr)
 {
 	int ret = 0;

include/rdma/ib_verbs.h

@@ -1288,15 +1288,6 @@ struct ib_phys_buf {
 	u64      size;
 };
 
-struct ib_mr_attr {
-	struct ib_pd	*pd;
-	u64		device_virt_addr;
-	u64		size;
-	int		mr_access_flags;
-	u32		lkey;
-	u32		rkey;
-};
-
 enum ib_mr_rereg_flags {
 	IB_MR_REREG_TRANS	= 1,
 	IB_MR_REREG_PD		= (1<<1),
@@ -1846,8 +1837,6 @@ struct ib_device {
 						    int mr_access_flags,
 						    struct ib_pd *pd,
 						    struct ib_udata *udata);
-	int                        (*query_mr)(struct ib_mr *mr,
-					       struct ib_mr_attr *mr_attr);
 	int                        (*dereg_mr)(struct ib_mr *mr);
 	struct ib_mr *		   (*alloc_mr)(struct ib_pd *pd,
 					       enum ib_mr_type mr_type,
@@ -2958,13 +2947,6 @@ static inline void ib_dma_free_coherent(struct ib_device *dev,
 		dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
 }
 
-/**
- * ib_query_mr - Retrieves information about a specific memory region.
- * @mr: The memory region to retrieve information about.
- * @mr_attr: The attributes of the specified memory region.
- */
-int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
-
 /**
  * ib_dereg_mr - Deregisters a memory region and removes it from the
  *   HCA translation table.