[PATCH] net: ethernet: renesas: rswitch: Fix build error about ptp

[PATCH] net: ethernet: renesas: rswitch: Fix build error about ptp

[Yoshihiro Shimoda]

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@intel.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 6c6fa1a00ad3 ("net: ethernet: renesas: rswitch: Add R-Car Gen4 gPTP support")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 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

Re: [PATCH] net: ethernet: renesas: rswitch: Fix build error about ptp

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (master)
by Jakub Kicinski <kuba@kernel.org>:

On Thu, 10 Nov 2022 10:27:20 +0900 you wrote:
> 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'
> 
> [...]

Here is the summary with links:
  - net: ethernet: renesas: rswitch: Fix build error about ptp
    https://git.kernel.org/netdev/net-next/c/76ad97e150f1

You are awesome, thank you!
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