[PATCH] event: fix warning from useless snprintf

[Stephen Hemminger <stephen@networkplumber.org>]

With Gcc-14, this warning is generated:
../drivers/event/sw/sw_evdev.c:263:3: warning: 'snprintf' will always be truncated;
    specified size is 12, but format string expands to at least 13 [-Wformat-truncation]
  263 |                 snprintf(buf, sizeof(buf), "sw%d_iq_%d_rob", dev_id, i);
      |                 ^

Yet the whole printf to the buf is unnecessary. The type string argument
has never been implemented, and should just be NULL.  Removing the
unnecessary snprintf, then means IQ_ROB_NAMESIZE can be removed.

Fixes: 5ffb2f142d95 ("event/sw: support event queues")

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 drivers/event/sw/iq_chunk.h | 2 --
 drivers/event/sw/sw_evdev.c | 5 +----
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/event/sw/iq_chunk.h b/drivers/event/sw/iq_chunk.h
index 7a7a8782e6..e638142dbc 100644
--- a/drivers/event/sw/iq_chunk.h
+++ b/drivers/event/sw/iq_chunk.h
@@ -9,8 +9,6 @@
 #include <stdbool.h>
 #include <rte_eventdev.h>
 
-#define IQ_ROB_NAMESIZE 12
-
 struct __rte_cache_aligned sw_queue_chunk {
 	struct rte_event events[SW_EVS_PER_Q_CHUNK];
 	struct sw_queue_chunk *next;
diff --git a/drivers/event/sw/sw_evdev.c b/drivers/event/sw/sw_evdev.c
index 1c01b069fe..19a52afc7d 100644
--- a/drivers/event/sw/sw_evdev.c
+++ b/drivers/event/sw/sw_evdev.c
@@ -228,9 +228,7 @@ qid_init(struct sw_evdev *sw, unsigned int idx, int type,
 		const struct rte_event_queue_conf *queue_conf)
 {
 	unsigned int i;
-	int dev_id = sw->data->dev_id;
 	int socket_id = sw->data->socket_id;
-	char buf[IQ_ROB_NAMESIZE];
 	struct sw_qid *qid = &sw->qids[idx];
 
 	/* Initialize the FID structures to no pinning (-1), and zero packets */
@@ -260,8 +258,7 @@ qid_init(struct sw_evdev *sw, unsigned int idx, int type,
 			goto cleanup;
 		}
 
-		snprintf(buf, sizeof(buf), "sw%d_iq_%d_rob", dev_id, i);
-		qid->reorder_buffer = rte_zmalloc_socket(buf,
+		qid->reorder_buffer = rte_zmalloc_socket(NULL,
 				window_size * sizeof(qid->reorder_buffer[0]),
 				0, socket_id);
 		if (!qid->reorder_buffer) {
-- 
2.43.0