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/user_sdma.c:1349 set_txreq_header_ahg()
warn: mask and shift to zero
drivers/staging/rdma/hfi1/user_sdma.c
1347 /* Clear KDETH.SH on last packet */
1348 if (unlikely(tx->flags &
USER_SDMA_TXREQ_FLAGS_LAST_PKT)) {
1349 val |=
cpu_to_le16(KDETH_GET(hdr->kdeth.ver_tid_offset,
1350 INTR)
>> 16);
KDETH_GET(hdr->kdeth.ver_tid_offset, INTR) is zero or one. 1 >> 16 is
zero. This line is a no-op.
1351 val &= cpu_to_le16(~(1U << 13));
1352 AHG_HEADER_SET(req->ahg, diff, 7, 16, 14, val);
1353 } else
1354 AHG_HEADER_SET(req->ahg, diff, 7, 16, 12, val);
regards,
dan carpenter
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