Re: [PATCH v2 net] ionic: fix ptp support config breakage

[Leon Romanovsky <leon@kernel.org>]

On Tue, May 04, 2021 at 05:00:59PM -0700, Shannon Nelson wrote:
> Driver link failed with undefined references in some
> kernel config variations.
> 
> v2 - added Fixes tag

Changelogs should be below "---" line.
We don't need them in commit message history.

> 
> Fixes: 61db421da31b ("ionic: link in the new hw timestamp code")
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: Shannon Nelson <snelson@pensando.io>
> ---
>  drivers/net/ethernet/pensando/ionic/Makefile    | 3 +--
>  drivers/net/ethernet/pensando/ionic/ionic_phc.c | 3 +++
>  2 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ethernet/pensando/ionic/Makefile b/drivers/net/ethernet/pensando/ionic/Makefile
> index 4e7642a2d25f..61c40169cb1f 100644
> --- a/drivers/net/ethernet/pensando/ionic/Makefile
> +++ b/drivers/net/ethernet/pensando/ionic/Makefile
> @@ -5,5 +5,4 @@ obj-$(CONFIG_IONIC) := ionic.o
>  
>  ionic-y := ionic_main.o ionic_bus_pci.o ionic_devlink.o ionic_dev.o \
>  	   ionic_debugfs.o ionic_lif.o ionic_rx_filter.o ionic_ethtool.o \
> -	   ionic_txrx.o ionic_stats.o ionic_fw.o
> -ionic-$(CONFIG_PTP_1588_CLOCK) += ionic_phc.o
> +	   ionic_txrx.o ionic_stats.o ionic_fw.o ionic_phc.o
> diff --git a/drivers/net/ethernet/pensando/ionic/ionic_phc.c b/drivers/net/ethernet/pensando/ionic/ionic_phc.c
> index a87c87e86aef..30c78808c45a 100644
> --- a/drivers/net/ethernet/pensando/ionic/ionic_phc.c
> +++ b/drivers/net/ethernet/pensando/ionic/ionic_phc.c
> @@ -1,6 +1,8 @@
>  // SPDX-License-Identifier: GPL-2.0
>  /* Copyright(c) 2017 - 2021 Pensando Systems, Inc */
>  
> +#if IS_ENABLED(CONFIG_PTP_1588_CLOCK)

I'm not sure, but think that IS_ENABLED() is intended to be used inside
functions/macros as boolean expression.

For other places like this, "#if CONFIG_PTP_1588_CLOCK" is better fit.

Thanks