RDMA/vmw_pvrdma: Remove unused pvrdma_modify_device

pvrdma_modify_device() was added in 2016 as part of
commit 29c8d9e ("IB: Add vmw_pvrdma driver")
but accidentally it was never wired into the device_ops struct.

After some discussion the best course seems to be just to remove it,
see discussion at:
https://lore.kernel.org/all/Z8TWF6coBUF3l_jk@gallifrey/

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Link: https://patch.msgid.link/20250304215637.68559-1-linux@treblig.org
Acked-by: Vishnu Dasa <vishnu.dasa@broadcom.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.c

@@ -237,34 +237,6 @@ enum rdma_link_layer pvrdma_port_link_layer(struct ib_device *ibdev,
 	return IB_LINK_LAYER_ETHERNET;
 }
 
-int pvrdma_modify_device(struct ib_device *ibdev, int mask,
-			 struct ib_device_modify *props)
-{
-	unsigned long flags;
-
-	if (mask & ~(IB_DEVICE_MODIFY_SYS_IMAGE_GUID |
-		     IB_DEVICE_MODIFY_NODE_DESC)) {
-		dev_warn(&to_vdev(ibdev)->pdev->dev,
-			 "unsupported device modify mask %#x\n", mask);
-		return -EOPNOTSUPP;
-	}
-
-	if (mask & IB_DEVICE_MODIFY_NODE_DESC) {
-		spin_lock_irqsave(&to_vdev(ibdev)->desc_lock, flags);
-		memcpy(ibdev->node_desc, props->node_desc, 64);
-		spin_unlock_irqrestore(&to_vdev(ibdev)->desc_lock, flags);
-	}
-
-	if (mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) {
-		mutex_lock(&to_vdev(ibdev)->port_mutex);
-		to_vdev(ibdev)->sys_image_guid =
-			cpu_to_be64(props->sys_image_guid);
-		mutex_unlock(&to_vdev(ibdev)->port_mutex);
-	}
-
-	return 0;
-}
-
 /**
  * pvrdma_modify_port - modify device port attributes
  * @ibdev: the device to modify

drivers/infiniband/hw/vmw_pvrdma/pvrdma_verbs.h

@@ -356,8 +356,6 @@ int pvrdma_query_pkey(struct ib_device *ibdev, u32 port,
 		      u16 index, u16 *pkey);
 enum rdma_link_layer pvrdma_port_link_layer(struct ib_device *ibdev,
 					    u32 port);
-int pvrdma_modify_device(struct ib_device *ibdev, int mask,
-			 struct ib_device_modify *props);
 int pvrdma_modify_port(struct ib_device *ibdev, u32 port,
 		       int mask, struct ib_port_modify *props);
 int pvrdma_mmap(struct ib_ucontext *context, struct vm_area_struct *vma);