netdev - [PATCH net-next 09/11] net: mscc: ocelot: make ocelot_init_timestamp take a const struct ptp_clock

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Date:   Fri, 18 Sep 2020 13:57:51 +0300
From:   Vladimir Oltean <olteanv@...il.com>
To:     davem@...emloft.net, netdev@...r.kernel.org
Cc:     yangbo.lu@....com, xiaoliang.yang_1@....com,
        UNGLinuxDriver@...rochip.com, claudiu.manoil@....com,
        alexandre.belloni@...tlin.com, andrew@...n.ch,
        vivien.didelot@...il.com, f.fainelli@...il.com, kuba@...nel.org
Subject: [PATCH net-next 09/11] net: mscc: ocelot: make ocelot_init_timestamp take a const struct ptp_clock_info

From: Vladimir Oltean <vladimir.oltean@....com>

It is a good measure to ensure correctness if the structures that are
meant to remain constant are only processed by functions that thake
constant arguments.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 drivers/net/ethernet/mscc/ocelot_ptp.c | 3 ++-
 include/soc/mscc/ocelot_ptp.h          | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot_ptp.c b/drivers/net/ethernet/mscc/ocelot_ptp.c
index 1e08fe4daaef..a33ab315cc6b 100644
--- a/drivers/net/ethernet/mscc/ocelot_ptp.c
+++ b/drivers/net/ethernet/mscc/ocelot_ptp.c
@@ -300,7 +300,8 @@ int ocelot_ptp_enable(struct ptp_clock_info *ptp,
 }
 EXPORT_SYMBOL(ocelot_ptp_enable);
 
-int ocelot_init_timestamp(struct ocelot *ocelot, struct ptp_clock_info *info)
+int ocelot_init_timestamp(struct ocelot *ocelot,
+			  const struct ptp_clock_info *info)
 {
 	struct ptp_clock *ptp_clock;
 	int i;
diff --git a/include/soc/mscc/ocelot_ptp.h b/include/soc/mscc/ocelot_ptp.h
index 4a6b2f71b6b2..6a7388fa7cc5 100644
--- a/include/soc/mscc/ocelot_ptp.h
+++ b/include/soc/mscc/ocelot_ptp.h
@@ -53,6 +53,7 @@ int ocelot_ptp_verify(struct ptp_clock_info *ptp, unsigned int pin,
 		      enum ptp_pin_function func, unsigned int chan);
 int ocelot_ptp_enable(struct ptp_clock_info *ptp,
 		      struct ptp_clock_request *rq, int on);
-int ocelot_init_timestamp(struct ocelot *ocelot, struct ptp_clock_info *info);
+int ocelot_init_timestamp(struct ocelot *ocelot,
+			  const struct ptp_clock_info *info);
 int ocelot_deinit_timestamp(struct ocelot *ocelot);
 #endif
-- 
2.25.1