linux-kernel - [PATCH] net: dsa: microchip: ptp: add one more PTP dependency

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Message-Id: <20230127221323.2522421-1-arnd@kernel.org>
Date:   Fri, 27 Jan 2023 23:13:03 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Woojung Huh <woojung.huh@...rochip.com>,
        UNGLinuxDriver@...rochip.com, Andrew Lunn <andrew@...n.ch>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Richard Cochran <richardcochran@...il.com>,
        Arun Ramadoss <arun.ramadoss@...rochip.com>,
        Jacob Keller <jacob.e.keller@...el.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] net: dsa: microchip: ptp: add one more PTP dependency

From: Arnd Bergmann <arnd@...db.de>

When only NET_DSA_MICROCHIP_KSZ8863_SMI is built-in but
PTP is a loadable module, the ksz_ptp support still causes
a link failure:

ld.lld-16: error: undefined symbol: ptp_clock_index
>>> referenced by ksz_ptp.c
>>>               drivers/net/dsa/microchip/ksz_ptp.o:(ksz_get_ts_info) in archive vmlinux.a

Add the same dependency here that exists with the KSZ9477_I2C
and KSZ_SPI drivers.

Fixes: eac1ea20261e ("net: dsa: microchip: ptp: add the posix clock support")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/net/dsa/microchip/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/dsa/microchip/Kconfig b/drivers/net/dsa/microchip/Kconfig
index 0546c573668a..11920939b6d8 100644
--- a/drivers/net/dsa/microchip/Kconfig
+++ b/drivers/net/dsa/microchip/Kconfig
@@ -36,6 +36,7 @@ config NET_DSA_MICROCHIP_KSZ_PTP
 config NET_DSA_MICROCHIP_KSZ8863_SMI
 	tristate "KSZ series SMI connected switch driver"
 	depends on NET_DSA_MICROCHIP_KSZ_COMMON
+	depends on PTP_1588_CLOCK_OPTIONAL
 	select MDIO_BITBANG
 	help
 	  Select to enable support for registering switches configured through
-- 
2.39.0