RDMA/mana_ib: use the correct page size for mapping user-mode doorbell page

jira LE-3813
commit-author Long Li <[email protected]>
commit 4a3b99b

When mapping doorbell page from user-mode, the driver should use the system
page size as this memory is allocated via mmap() from user-mode.

	Cc: [email protected]
Fixes: 0266a17 ("RDMA/mana_ib: Add a driver for Microsoft Azure Network Adapter")
	Signed-off-by: Long Li <[email protected]>
Link: https://patch.msgid.link/[email protected]
	Signed-off-by: Leon Romanovsky <[email protected]>
(cherry picked from commit 4a3b99b)
	Signed-off-by: Shreeya Patel <[email protected]>
Signed-off-by: Jonathan Maple <[email protected]>

Author: shreeya-patel98

drivers/infiniband/hw/mana/main.c

@@ -511,13 +511,13 @@ int mana_ib_mmap(struct ib_ucontext *ibcontext, struct vm_area_struct *vma)
 	      PAGE_SHIFT;
 	prot = pgprot_writecombine(vma->vm_page_prot);
 
-	ret = rdma_user_mmap_io(ibcontext, vma, pfn, gc->db_page_size, prot,
+	ret = rdma_user_mmap_io(ibcontext, vma, pfn, PAGE_SIZE, prot,
 				NULL);
 	if (ret)
 		ibdev_dbg(ibdev, "can't rdma_user_mmap_io ret %d\n", ret);
 	else
-		ibdev_dbg(ibdev, "mapped I/O pfn 0x%llx page_size %u, ret %d\n",
-			  pfn, gc->db_page_size, ret);
+		ibdev_dbg(ibdev, "mapped I/O pfn 0x%llx page_size %lu, ret %d\n",
+			  pfn, PAGE_SIZE, ret);
 
 	return ret;
 }