IB/hfi1: Remove unused user command

The HFI1_CMD_SDMA_STATUS_UPD command was never implemented it has no
reason to live in the driver. Remove it.
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NMitko Haralanov <mitko.haralanov@intel.com>
Reviewed-by: NIra Weiny <ira.weiny@intel.com>
Signed-off-by: NDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

drivers/staging/rdma/hfi1/file_ops.c

@@ -213,7 +213,6 @@ static ssize_t hfi1_file_write(struct file *fp, const char __user *data,
 		copy = sizeof(uinfo);
 		dest = &uinfo;
 		break;
-	case HFI1_CMD_SDMA_STATUS_UPD:
 	case HFI1_CMD_CREDIT_UPD:
 		copy = 0;
 		break;
@@ -273,8 +272,6 @@ static ssize_t hfi1_file_write(struct file *fp, const char __user *data,
 		ret = get_base_info(fp, (void __user *)(unsigned long)
 				    user_val, cmd.len);
 		break;
-	case HFI1_CMD_SDMA_STATUS_UPD:
-		break;
 	case HFI1_CMD_CREDIT_UPD:
 		if (uctxt && uctxt->sc)
 			sc_return_credits(uctxt->sc);

include/uapi/rdma/hfi/hfi1_user.h

@@ -114,7 +114,6 @@
 #define HFI1_CMD_TID_UPDATE      4	/* update expected TID entries */
 #define HFI1_CMD_TID_FREE        5	/* free expected TID entries */
 #define HFI1_CMD_CREDIT_UPD      6	/* force an update of PIO credit */
-#define HFI1_CMD_SDMA_STATUS_UPD 7      /* force update of SDMA status ring */
 
 #define HFI1_CMD_RECV_CTRL       8	/* control receipt of packets */
 #define HFI1_CMD_POLL_TYPE       9	/* set the kind of polling we want */