netdev - Re: [PATCH net] cxgb4: fix thermal zone build error

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Date:   Thu, 15 Nov 2018 12:30:02 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Ganesh Goudar <ganeshgr@...lsio.com>, netdev@...r.kernel.org,
        davem@...emloft.net
Cc:     nirranjan@...lsio.com, indranil@...lsio.com, dt@...lsio.com,
        rdunlap@...radead.org
Subject: Re: [PATCH net] cxgb4: fix thermal zone build error

Hello!

On 15.11.2018 12:23, Ganesh Goudar wrote:

> with CONFIG_THERMAL=m and cxgb4 as built-in build fails, and
> 'commit e70a57fa59bb ("cxgb4: fix thermal configuration dependencies")'
> tires to fix it but when cxgb4i is made built-in build fails again,

    Tries? :-)

> use IS_REACHABLE instead of IS_ENABLED to fix the issue.
> 
> Fixes: e70a57fa59bb (cxgb4: fix thermal configuration dependencies)
> Reported-by: Randy Dunlap <rdunlap@...radead.org>
> Signed-off-by: Ganesh Goudar <ganeshgr@...lsio.com>
> ---
>   drivers/net/ethernet/chelsio/Kconfig            |  1 -
>   drivers/net/ethernet/chelsio/cxgb4/Makefile     |  4 +---
>   drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 12 ++++++------
>   3 files changed, 7 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/net/ethernet/chelsio/Kconfig b/drivers/net/ethernet/chelsio/Kconfig
> index 75c1c5e..e2cdfa7 100644
> --- a/drivers/net/ethernet/chelsio/Kconfig
> +++ b/drivers/net/ethernet/chelsio/Kconfig
> @@ -67,7 +67,6 @@ config CHELSIO_T3
>   config CHELSIO_T4
>   	tristate "Chelsio Communications T4/T5/T6 Ethernet support"
>   	depends on PCI && (IPV6 || IPV6=n)
> -	depends on THERMAL || !THERMAL
>   	select FW_LOADER
>   	select MDIO
>   	select ZLIB_DEFLATE
> diff --git a/drivers/net/ethernet/chelsio/cxgb4/Makefile b/drivers/net/ethernet/chelsio/cxgb4/Makefile
> index 78e5d17..91d8a88 100644
> --- a/drivers/net/ethernet/chelsio/cxgb4/Makefile
> +++ b/drivers/net/ethernet/chelsio/cxgb4/Makefile
> @@ -12,6 +12,4 @@ cxgb4-objs := cxgb4_main.o l2t.o smt.o t4_hw.o sge.o clip_tbl.o cxgb4_ethtool.o
>   cxgb4-$(CONFIG_CHELSIO_T4_DCB) +=  cxgb4_dcb.o
>   cxgb4-$(CONFIG_CHELSIO_T4_FCOE) +=  cxgb4_fcoe.o
>   cxgb4-$(CONFIG_DEBUG_FS) += cxgb4_debugfs.o
> -ifdef CONFIG_THERMAL
> -cxgb4-objs += cxgb4_thermal.o
> -endif
> +cxgb4-$(CONFIG_THERMAL) += cxgb4_thermal.o
> diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
> index 05a4692..bd85210 100644
> --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
> +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
> @@ -5863,10 +5863,10 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
>   	if (!is_t4(adapter->params.chip))
>   		cxgb4_ptp_init(adapter);
>   
> -	if (IS_ENABLED(CONFIG_THERMAL) &&
> -	    !is_t4(adapter->params.chip) && (adapter->flags & FW_OK))
> +#if IS_REACHABLE(CONFIG_THERMAL)

    Why use #ifdef amidst a function (if you can avoid it)?

> +	if (!is_t4(adapter->params.chip) && (adapter->flags & FW_OK))
>   		cxgb4_thermal_init(adapter);
> -
> +#endif
>   	print_adapter_info(adapter);
>   	return 0;
>   
> @@ -5932,9 +5932,9 @@ static void remove_one(struct pci_dev *pdev)
>   
>   		if (!is_t4(adapter->params.chip))
>   			cxgb4_ptp_stop(adapter);
> -		if (IS_ENABLED(CONFIG_THERMAL))
> -			cxgb4_thermal_remove(adapter);
> -
> +#if IS_REACHABLE(CONFIG_THERMAL)
> +		cxgb4_thermal_remove(adapter);
> +#endif

    Same question.

[...]

MBR, Sergei