IB/hfi1: add driver files

Hello Mike Marciniszyn,

The patch 7724105686e7: "IB/hfi1: add driver files" from Jul 30, 2015, leads to the following static checker warning:

	drivers/staging/rdma/hfi1/rc.c:2399 hfi1_rc_hdrerr()
	warn: right shift assign to zero

drivers/staging/rdma/hfi1/rc.c
2376 void hfi1_rc_hdrerr(

  2377          struct hfi1_ctxtdata *rcd,
  2378          struct hfi1_ib_header *hdr,
  2379          u32 rcv_flags,
  2380          struct hfi1_qp *qp)
  2381  {
  2382          int has_grh = rcv_flags & HFI1_HAS_GRH;
  2383          struct hfi1_other_headers *ohdr;
  2384          struct hfi1_ibport *ibp = to_iport(qp->ibqp.device, qp->port_num);
  2385          int diff;
  2386          u8 opcode;
  2387          u32 psn;
  2388  
  2389          /* Check for GRH */
  2390          ohdr = &hdr->u.oth;
  2391          if (has_grh)

2392 ohdr = &hdr->u.l.oth;
2393
2394 opcode = be32_to_cpu(ohdr->bth[0]);
2395 if (hfi1_ruc_check_hdr(ibp, hdr, has_grh, qp, opcode))
2396 return;
2397
2398 psn = be32_to_cpu(ohdr->bth[2]);
2399 opcode >>= 24;
2400

opcode should probably be a u32 instead of a u8.

regards,
dan carpenter
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