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authorDave Olson <dave.olson@qlogic.com>2008-01-06 21:02:34 -0800
committerRoland Dreier <rolandd@cisco.com>2008-01-25 14:15:38 -0800
commit9e2ef36b5a83b3c8ec1153382559dff410cc4341 (patch)
treef075e20c043c46afbab0320b5a92bac24592bd58 /drivers/infiniband/hw/ipath/ipath_verbs.c
parent3029fcc3d44530601f19fd8f551ac195d3a918d7 (diff)
IB/ipath: Clean up some comments
Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_verbs.c')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_verbs.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c
index a2baa618daf2..904ff1571ba6 100644
--- a/drivers/infiniband/hw/ipath/ipath_verbs.c
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.c
@@ -943,7 +943,7 @@ bail:
* ipath_verbs_send - send a packet
* @qp: the QP to send on
* @hdr: the packet header
- * @hdrwords: the number of words in the header
+ * @hdrwords: the number of 32-bit words in the header
* @ss: the SGE to send
* @len: the length of the packet in bytes
*/
@@ -955,7 +955,10 @@ int ipath_verbs_send(struct ipath_qp *qp, struct ipath_ib_header *hdr,
int ret;
u32 dwords = (len + 3) >> 2;
- /* +1 is for the qword padding of pbc */
+ /*
+ * Calculate the send buffer trigger address.
+ * The +1 counts for the pbc control dword following the pbc length.
+ */
plen = hdrwords + dwords + 1;
/* Drop non-VL15 packets if we are not in the active state */