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| author | Jack Wang <jinpu.wang@ionos.com> | 2021-05-31 14:28:35 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-05-31 20:38:08 +0200 |
| commit | 0e8558476faf02ec51256cad9c487c93c346198c (patch) | |
| tree | 3a00d20a6be2c14cb4c28731f2986cd191c4e61b /drivers | |
| parent | RDMA/rtrs-clt: Fix memory leak of not-freed sess->stats and stats->pcpu_stats (diff) | |
| download | linux-0e8558476faf02ec51256cad9c487c93c346198c.tar.xz linux-0e8558476faf02ec51256cad9c487c93c346198c.zip | |
RDMA/rtrs: Avoid Wtautological-constant-out-of-range-compare
drivers/infiniband/ulp/rtrs/rtrs-clt.c:1786:19: warning: result of comparison of
constant 'MAX_SESS_QUEUE_DEPTH' (65536) with expression of type 'u16'
(aka 'unsigned short') is always false [-Wtautological-constant-out-of-range-compare]
To fix it, limit MAX_SESS_QUEUE_DEPTH to u16 max, which is 65535, and
drop the check in rtrs-clt, as it's the type u16 max.
Link: https://lore.kernel.org/r/20210531122835.58329-1-jinpu.wang@ionos.com
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/ulp/rtrs/rtrs-clt.c | 5 | ||||
| -rw-r--r-- | drivers/infiniband/ulp/rtrs/rtrs-pri.h | 4 |
2 files changed, 2 insertions, 7 deletions
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c index 8e05a71d8da1..f1fd7ae9ac53 100644 --- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c +++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c @@ -1775,11 +1775,6 @@ static int rtrs_rdma_conn_established(struct rtrs_clt_con *con, if (con->c.cid == 0) { queue_depth = le16_to_cpu(msg->queue_depth); - if (queue_depth > MAX_SESS_QUEUE_DEPTH) { - rtrs_err(clt, "Invalid RTRS message: queue=%d\n", - queue_depth); - return -ECONNRESET; - } if (sess->queue_depth > 0 && queue_depth != sess->queue_depth) { rtrs_err(clt, "Error: queue depth changed\n"); diff --git a/drivers/infiniband/ulp/rtrs/rtrs-pri.h b/drivers/infiniband/ulp/rtrs/rtrs-pri.h index 1705197b8c22..bd06a79fd516 100644 --- a/drivers/infiniband/ulp/rtrs/rtrs-pri.h +++ b/drivers/infiniband/ulp/rtrs/rtrs-pri.h @@ -53,9 +53,9 @@ enum { * But mempool_create, create_qp and ib_post_send fail with * "cannot allocate memory" error if sess_queue_depth is too big. * Therefore the pratical max value of sess_queue_depth is - * somewhere between 1 and 65536 and it depends on the system. + * somewhere between 1 and 65534 and it depends on the system. */ - MAX_SESS_QUEUE_DEPTH = 65536, + MAX_SESS_QUEUE_DEPTH = 65535, MIN_CHUNK_SIZE = 8192, RTRS_HB_INTERVAL_MS = 5000, |