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path: root/drivers/infiniband/hw/qib/qib_driver.c
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Diffstat (limited to 'drivers/infiniband/hw/qib/qib_driver.c')
-rw-r--r--drivers/infiniband/hw/qib/qib_driver.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/drivers/infiniband/hw/qib/qib_driver.c b/drivers/infiniband/hw/qib/qib_driver.c
index 23e584f4c36c..9a9047f385ae 100644
--- a/drivers/infiniband/hw/qib/qib_driver.c
+++ b/drivers/infiniband/hw/qib/qib_driver.c
@@ -279,10 +279,10 @@ bail:
*/
static inline void *qib_get_egrbuf(const struct qib_ctxtdata *rcd, u32 etail)
{
- const u32 chunk = etail / rcd->rcvegrbufs_perchunk;
- const u32 idx = etail % rcd->rcvegrbufs_perchunk;
+ const u32 chunk = etail >> rcd->rcvegrbufs_perchunk_shift;
+ const u32 idx = etail & ((u32)rcd->rcvegrbufs_perchunk - 1);
- return rcd->rcvegrbuf[chunk] + idx * rcd->dd->rcvegrbufsize;
+ return rcd->rcvegrbuf[chunk] + (idx << rcd->dd->rcvegrbufsize_shift);
}
/*
@@ -310,7 +310,6 @@ static u32 qib_rcv_hdrerr(struct qib_ctxtdata *rcd, struct qib_pportdata *ppd,
u32 opcode;
u32 psn;
int diff;
- unsigned long flags;
/* Sanity check packet */
if (tlen < 24)
@@ -365,7 +364,6 @@ static u32 qib_rcv_hdrerr(struct qib_ctxtdata *rcd, struct qib_pportdata *ppd,
switch (qp->ibqp.qp_type) {
case IB_QPT_RC:
- spin_lock_irqsave(&qp->s_lock, flags);
ruc_res =
qib_ruc_check_hdr(
ibp, hdr,
@@ -373,11 +371,8 @@ static u32 qib_rcv_hdrerr(struct qib_ctxtdata *rcd, struct qib_pportdata *ppd,
qp,
be32_to_cpu(ohdr->bth[0]));
if (ruc_res) {
- spin_unlock_irqrestore(&qp->s_lock,
- flags);
goto unlock;
}
- spin_unlock_irqrestore(&qp->s_lock, flags);
/* Only deal with RDMA Writes for now */
if (opcode <
@@ -547,6 +542,15 @@ move_along:
updegr = 0;
}
}
+ /*
+ * Notify qib_destroy_qp() if it is waiting
+ * for lookaside_qp to finish.
+ */
+ if (rcd->lookaside_qp) {
+ if (atomic_dec_and_test(&rcd->lookaside_qp->refcount))
+ wake_up(&rcd->lookaside_qp->wait);
+ rcd->lookaside_qp = NULL;
+ }
rcd->head = l;
rcd->pkt_count += i;