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Commit 501edc42 authored by Brian Welty's avatar Brian Welty Committed by Doug Ledford
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IB/rdmavt: Correct warning during QPN allocation 



Correct calculation of the low order bits which should be unset
based on use of qos_shift parameter when assigning QPN.

Reviewed-by: default avatarDennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: default avatarBrian Welty <brian.welty@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 96605672

drivers/infiniband/sw/rdmavt/qp.c

+2 −2
Original line number Diff line number Diff line
@@ -369,8 +369,8 @@ static int alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt, 
			/* wrap to first map page, invert bit 0 */

			offset = qpt->incr | ((offset & 1) ^ 1);

		}

		/* there can be no bits at shift and below */

		WARN_ON(offset & (rdi->dparms.qos_shift - 1));

		/* there can be no set bits in low-order QoS bits */

		WARN_ON(offset & (BIT(rdi->dparms.qos_shift) - 1));

		qpn = mk_qpn(qpt, map, offset);

	}