netdev - Re: [PATCH v3 net-next] sfc: fix ia64 builds without CONFIG_RTC

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Date:   Sun, 19 Feb 2023 14:24:50 +0100
From:   Simon Horman <simon.horman@...igine.com>
To:     alejandro.lucero-palau@....com
Cc:     netdev@...r.kernel.org, linux-net-drivers@....com,
        davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com, habetsm.xilinx@...il.com,
        ecree.xilinx@...il.com, linux-doc@...r.kernel.org, corbet@....net,
        jiri@...dia.com
Subject: Re: [PATCH v3 net-next] sfc: fix ia64 builds without CONFIG_RTC_LIB

Hi Alejandro,

On Sat, Feb 18, 2023 at 12:56:20AM +0000, alejandro.lucero-palau@....com wrote:
> From: Alejandro Lucero <alejandro.lucero-palau@....com>
> 
> Add an embarrassingly missed semicolon plus and embarrassingly missed
> parenthesis breaking kernel building in ia64 configs.

I think this statement is slightly misleading.

The problem may have manifested when building for ia64 config.
However, I don't believe that it is, strictly speaking, an ia64 issue.
Rather, I believe the problem is build without CONFIG_RTC_LIB.

Some architectures select CONFIG_RTC_LIB., f.e. x86_64. But some do not.
ia64 is one such example. arm64 is another - indeed I was able to reproduce
the bug when building for arm64 using config based on the one at the link
below.

I think it would be helpful to update the patch description accordingly.

Code change looks good to me: I exercised builds for both ia64 and arm64.

> Reported-by: kernel test robot <lkp@...el.com>
> Link: https://lore.kernel.org/oe-kbuild-all/202302170047.EjCPizu3-lkp@intel.com/
> Fixes: 14743ddd2495 ("sfc: add devlink info support for ef100")
> Signed-off-by: Alejandro Lucero <alejandro.lucero-palau@....com>
> ---
>  drivers/net/ethernet/sfc/efx_devlink.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ethernet/sfc/efx_devlink.c b/drivers/net/ethernet/sfc/efx_devlink.c
> index d2eb6712ba35..c829362ca99f 100644
> --- a/drivers/net/ethernet/sfc/efx_devlink.c
> +++ b/drivers/net/ethernet/sfc/efx_devlink.c
> @@ -323,7 +323,7 @@ static void efx_devlink_info_running_v2(struct efx_nic *efx,
>  				    GET_VERSION_V2_OUT_SUCFW_BUILD_DATE);
>  		rtc_time64_to_tm(tstamp, &build_date);
>  #else
> -		memset(&build_date, 0, sizeof(build_date)
> +		memset(&build_date, 0, sizeof(build_date));
>  #endif
>  		build_id = MCDI_DWORD(outbuf, GET_VERSION_V2_OUT_SUCFW_CHIP_ID);
>  
> -- 
> 2.17.1
>