linux-kernel - [PATCH net-next v2 1/4] net: pcs: xpcs: Drop sentinel entry from 2500basex ifaces list

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Date: Thu, 22 Feb 2024 20:58:20 +0300
From: Serge Semin <fancer.lancer@...il.com>
To: Jose Abreu <joabreu@...opsys.com>,
	Jose Abreu <Jose.Abreu@...opsys.com>,
	Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	Jakub Kicinski <kuba@...nel.org>,
	Vladimir Oltean <olteanv@...il.com>,
	Maxime Chevallier <maxime.chevallier@...tlin.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Paolo Abeni <pabeni@...hat.com>
Cc: Serge Semin <fancer.lancer@...il.com>,
	Mengyuan Lou <mengyuanlou@...-swift.com>,
	Tomer Maimon <tmaimon77@...il.com>,
	Jiawen Wu <jiawenwu@...stnetic.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	openbmc@...ts.ozlabs.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Vladimir Oltean <vladimir.oltean@....com>
Subject: [PATCH net-next v2 1/4] net: pcs: xpcs: Drop sentinel entry from 2500basex ifaces list

There are currently only two methods (xpcs_find_compat() and
xpcs_get_interfaces()) defined in the driver which loop over the available
interfaces. All of them rely on the xpcs_compat::num_interfaces field
value to get the total number of supported interfaces. Thus the interface
arrays are supposed to be filled with actual interface IDs and there is no
need in the dummy terminating ID placed at the end of the arrays.

Based on the above drop the PHY_INTERFACE_MODE_MAX entry from the
xpcs_2500basex_interfaces array and the PHY_INTERFACE_MODE_MAX-based
conditional statement from the xpcs_get_interfaces() method as redundant.

Signed-off-by: Serge Semin <fancer.lancer@...il.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@....com>
---
 drivers/net/pcs/pcs-xpcs.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c
index 31f0beba638a..dc7c374da495 100644
--- a/drivers/net/pcs/pcs-xpcs.c
+++ b/drivers/net/pcs/pcs-xpcs.c
@@ -130,7 +130,6 @@ static const phy_interface_t xpcs_1000basex_interfaces[] = {
 
 static const phy_interface_t xpcs_2500basex_interfaces[] = {
 	PHY_INTERFACE_MODE_2500BASEX,
-	PHY_INTERFACE_MODE_MAX,
 };
 
 enum {
@@ -636,8 +635,7 @@ void xpcs_get_interfaces(struct dw_xpcs *xpcs, unsigned long *interfaces)
 		const struct xpcs_compat *compat = &xpcs->id->compat[i];
 
 		for (j = 0; j < compat->num_interfaces; j++)
-			if (compat->interface[j] < PHY_INTERFACE_MODE_MAX)
-				__set_bit(compat->interface[j], interfaces);
+			__set_bit(compat->interface[j], interfaces);
 	}
 }
 EXPORT_SYMBOL_GPL(xpcs_get_interfaces);
-- 
2.43.0