linux-kernel - Re: [PATCH] wifi: iwlwifi: Fix warning by adding dependency on DMI

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Date:   Thu, 9 Nov 2023 20:41:24 +0530
From:   Sunil V L <sunilvl@...tanamicro.com>
To:     Johannes Berg <johannes@...solutions.net>
Cc:     linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org,
        Gregory Greenman <gregory.greenman@...el.com>,
        Kalle Valo <kvalo@...nel.org>,
        Palmer Dabbelt <palmer@...osinc.com>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Andrew Jones <ajones@...tanamicro.com>,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] wifi: iwlwifi: Fix warning by adding dependency on DMI

On Thu, Nov 09, 2023 at 10:09:53AM +0100, Johannes Berg wrote:
> On Thu, 2023-11-09 at 11:10 +0530, Sunil V L wrote:
> > This driver currently assumes CONFIG_DMI is enabled along with ACPI.
> > This may not be true. Due to this, the kernel test bot reports new
> > warning like below for RISC-V allyesconfig builds.
> > 
> > > > drivers/net/wireless/intel/iwlwifi/fw/acpi.c:1190:25:
> > warning: '%s' directive argument is null [-Wformat-overflow=]
> > 
> > 1190 | "System vendor '%s' is not in the approved list, disabling PPAG.\n",
> > 
> > Fix the warning by adding dependency on CONFIG_DMI.
> > 
> 
> Not sure that's the right fix - why not put checks in the code there?
> 
> Is it just a build warning?
> 
> maybe
> 
> -dmi_get_system_info(DMI_SYS_VENDOR)
> +dmi_get_system_info(DMI_SYS_VENDOR) ?: "<unknown>"
> 
Thanks!, Johannes. It is a build warning because of allyesconfig build.

Your suggestion works. I will send v2 with this solution.

Thanks,
Sunil