netdev - [PATCH v2 net-next] ptp: ocp: use snprintf() in ptp_ocp

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Date:   Fri, 18 Mar 2022 10:47:23 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Jonathan Lemon <jonathan.lemon@...il.com>
Cc:     Jonathan Lemon <jonathan.lemon@...il.com>, netdev@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH v2 net-next] ptp: ocp: use snprintf() in ptp_ocp_verify()

This code is fine, but it's easier to review if we use snprintf()
instead of sprintf().

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
v2: re-spin the patch based on the latest tree.  It turns out that the
code is not buggy so don't make the buffer larger and don't add a Fixes
tag.

 drivers/ptp/ptp_ocp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index d64a1ce5f5bc..c3d0fcf609e3 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -972,7 +972,7 @@ ptp_ocp_verify(struct ptp_clock_info *ptp_info, unsigned pin,
 
 	switch (func) {
 	case PTP_PF_NONE:
-		sprintf(buf, "IN: None");
+		snprintf(buf, sizeof(buf), "IN: None");
 		break;
 	case PTP_PF_EXTTS:
 		/* Allow timestamps, but require sysfs configuration. */
@@ -982,9 +982,9 @@ ptp_ocp_verify(struct ptp_clock_info *ptp_info, unsigned pin,
 		 * channels 1..4 are the frequency generators.
 		 */
 		if (chan)
-			sprintf(buf, "OUT: GEN%d", chan);
+			snprintf(buf, sizeof(buf), "OUT: GEN%d", chan);
 		else
-			sprintf(buf, "OUT: PHC");
+			snprintf(buf, sizeof(buf), "OUT: PHC");
 		break;
 	default:
 		return -EOPNOTSUPP;
-- 
2.20.1