netdev - [PATCH] ice: require PTP clock for building

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Date: Mon, 25 Sep 2023 17:55:24 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: Jesse Brandeburg <jesse.brandeburg@...el.com>,
	Tony Nguyen <anthony.l.nguyen@...el.com>
Cc: Arnd Bergmann <arnd@...db.de>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Arkadiusz Kubalewski <arkadiusz.kubalewski@...el.com>,
	Michal Michalik <michal.michalik@...el.com>,
	Jiri Pirko <jiri@...nulli.us>,
	Jacob Keller <jacob.e.keller@...el.com>,
	Joshua Hay <joshua.a.hay@...el.com>,
	Vadim Fedorenko <vadim.fedorenko@...ux.dev>,
	intel-wired-lan@...ts.osuosl.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] ice: require PTP clock for building

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

A previous fix added PTP as an optional dependency, which was correct as
of commit 87758511075ec ("igc: fix build errors for PTP"), but this
has recently changed with the PTP code getting more deeply integrated
into the ICE driver.

Trying to build ICE when PTP is disabled results in this internal link failure
as the local functions are left out of the driver:

ERROR: modpost: "ice_is_clock_mux_present_e810t" [drivers/net/ethernet/intel/ice/ice.ko] undefined!
ERROR: modpost: "ice_is_phy_rclk_present" [drivers/net/ethernet/intel/ice/ice.ko] undefined!
ERROR: modpost: "ice_cgu_get_pin_name" [drivers/net/ethernet/intel/ice/ice.ko] undefined!
ERROR: modpost: "ice_get_cgu_state" [drivers/net/ethernet/intel/ice/ice.ko] undefined!
ERROR: modpost: "ice_is_cgu_present" [drivers/net/ethernet/intel/ice/ice.ko] undefined!
ERROR: modpost: "ice_get_cgu_rclk_pin_info" [drivers/net/ethernet/intel/ice/ice.ko] undefined!
ERROR: modpost: "ice_cgu_get_pin_type" [drivers/net/ethernet/intel/ice/ice.ko] undefined!
ERROR: modpost: "ice_cgu_get_pin_freq_supp" [drivers/net/ethernet/intel/ice/ice.ko] undefined!

I tried rearranging the code to allow building it again, but this was getting
too complicated for an outsider, so just enforce the dependency to fix randconfig
builds again, until someone wants to clean this up again.

In practice, any configuration that includes this driver is also going to
want PTP clocks anyway.

Fixes: 8a3a565ff210a ("ice: add admin commands to access cgu configuration")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/net/ethernet/intel/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig
index e6684f3cc0ce0..c452ecf89b984 100644
--- a/drivers/net/ethernet/intel/Kconfig
+++ b/drivers/net/ethernet/intel/Kconfig
@@ -278,7 +278,7 @@ config ICE
 	tristate "Intel(R) Ethernet Connection E800 Series Support"
 	default n
 	depends on PCI_MSI
-	depends on PTP_1588_CLOCK_OPTIONAL
+	depends on PTP_1588_CLOCK
 	depends on GNSS || GNSS = n
 	select AUXILIARY_BUS
 	select DIMLIB
-- 
2.39.2