If CONFIG_PTP_1588_CLOCK_OPTIONAL=m and CONFIG_RENESAS_ETHER_SWITCH=y,
the following build error happened:
aarch64-linux-ld: DWARF error: could not find abbrev number 60
drivers/net/ethernet/renesas/rswitch.o: in function `rswitch_get_ts_info':
rswitch.c:(.text+0x408): undefined reference to `ptp_clock_index'
aarch64-linux-ld: DWARF error: could not find abbrev number 1190123
drivers/net/ethernet/renesas/rcar_gen4_ptp.o: in function `rcar_gen4_ptp_register':
rcar_gen4_ptp.c:(.text+0x4dc): undefined reference to `ptp_clock_register'
aarch64-linux-ld: drivers/net/ethernet/renesas/rcar_gen4_ptp.o: in function `rcar_gen4_ptp_unregister':
rcar_gen4_ptp.c:(.text+0x584): undefined reference to `ptp_clock_unregister'
To fix the issue, add "depends on PTP_1588_CLOCK_OPTIONAL" into the
Kconfig.
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Suggested-by: Arnd Bergmann <arnd@xxxxxxxx>
Fixes: 6c6fa1a00ad3 ("net: ethernet: renesas: rswitch: Add R-Car Gen4 gPTP support")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
---
drivers/net/ethernet/renesas/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/renesas/Kconfig b/drivers/net/ethernet/renesas/Kconfig
index 7a5e26b6ea9b..3ceb57408ed0 100644
--- a/drivers/net/ethernet/renesas/Kconfig
+++ b/drivers/net/ethernet/renesas/Kconfig
@@ -45,6 +45,7 @@ config RAVB
config RENESAS_ETHER_SWITCH
tristate "Renesas Ethernet Switch support"
depends on ARCH_RENESAS || COMPILE_TEST
+ depends on PTP_1588_CLOCK_OPTIONAL
select CRC32
select MII
select PHYLINK
--
2.25.1
