diff options
| author |   Dennis Dalessandro <dennis.dalessandro@intel.com> | 2017-04-09 10:17:30 -0700 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-04-28 13:56:24 -0400 |
| commit | 4608e4c8f2417a5a2985da9890710033c434c387 (patch) | |
| tree | 0c6c927b4763da1a749e3a8f2c97122cc78b6c14 | |
| parent | IB/hfi: Protect against writable mmap (diff) | |
| download | linux-dev-4608e4c8f2417a5a2985da9890710033c434c387.tar.xz linux-dev-4608e4c8f2417a5a2985da9890710033c434c387.zip | |
IB/hfi1: Use bool in process_ecn
The process_ecn intends to return a bool value. However it is doing
so incorrectly by ANDing the fecn mask. The fecn bit is bit 31. Bool is
not a native data type and is up to the compiler to implement how it
sees fit. It is conceivable that this upper bit gets washed out.
Fix by converting to a bool properly.
Cc: stable@vger.kernel.org
Fixes: Commit fd2b562edca6 ("IB/hfi1: Pull FECN/BECN processing to a common place")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
| -rw-r--r-- | drivers/infiniband/hw/hfi1/hfi.h | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/rc.c | 3 |
2 files changed, 3 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h index 9d7c65c7f939..f06674317abf 100644 --- a/drivers/infiniband/hw/hfi1/hfi.h +++ b/drivers/infiniband/hw/hfi1/hfi.h @@ -1660,7 +1660,7 @@ static inline bool process_ecn(struct rvt_qp *qp, struct hfi1_packet *pkt, bth1 = be32_to_cpu(ohdr->bth[1]); if (unlikely(bth1 & (IB_BECN_SMASK | IB_FECN_SMASK))) { hfi1_process_ecn_slowpath(qp, pkt, do_cnp); - return bth1 & IB_FECN_SMASK; + return !!(bth1 & IB_FECN_SMASK); } return false; } diff --git a/drivers/infiniband/hw/hfi1/rc.c b/drivers/infiniband/hw/hfi1/rc.c index da968b76ba62..9b3333fd9dc0 100644 --- a/drivers/infiniband/hw/hfi1/rc.c +++ b/drivers/infiniband/hw/hfi1/rc.c @@ -1930,7 +1930,8 @@ void hfi1_rc_rcv(struct hfi1_packet *packet) int diff; struct ib_reth *reth; unsigned long flags; - int ret, is_fecn = 0; + int ret; + bool is_fecn = false; bool copy_last = false; u32 rkey; |