linux-kernel - Re: [PATCH] firmware_loader: fix build without sysctl

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Message-ID: <20190531113216.796bb933@canb.auug.org.au>
Date:   Fri, 31 May 2019 11:32:16 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Matteo Croce <mcroce@...hat.com>
Cc:     Randy Dunlap <rdunlap@...radead.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] firmware_loader: fix build without sysctl

Hi all,

[Just cc'ing Andrew who is currently carrying the patch that this fixes.]

On Fri, 31 May 2019 03:26:49 +0200 Matteo Croce <mcroce@...hat.com> wrote:
>
> firmware_config_table has references to the sysctl code which
> triggers a build failure when CONFIG_PROC_SYSCTL is not set:
> 
>     ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x30): undefined reference to `sysctl_vals'
>     ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x38): undefined reference to `sysctl_vals'
>     ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x70): undefined reference to `sysctl_vals'
>     ld: drivers/base/firmware_loader/fallback_table.o:(.data+0x78): undefined reference to `sysctl_vals'
> 
> Put the firmware_config_table struct under #ifdef CONFIG_PROC_SYSCTL.
> 
> Fixes: 6a33853c5773 ("proc/sysctl: add shared variables for range check")
> Reported-by: Randy Dunlap <rdunlap@...radead.org>
> Signed-off-by: Matteo Croce <mcroce@...hat.com>
> ---
>  drivers/base/firmware_loader/fallback_table.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/base/firmware_loader/fallback_table.c b/drivers/base/firmware_loader/fallback_table.c
> index 58d4a1263480..18d646777fb9 100644
> --- a/drivers/base/firmware_loader/fallback_table.c
> +++ b/drivers/base/firmware_loader/fallback_table.c
> @@ -23,6 +23,8 @@ struct firmware_fallback_config fw_fallback_config = {
>  };
>  EXPORT_SYMBOL_GPL(fw_fallback_config);
>  
> +#ifdef CONFIG_PROC_SYSCTL
> +
>  struct ctl_table firmware_config_table[] = {
>  	{
>  		.procname	= "force_sysfs_fallback",
> @@ -45,3 +47,5 @@ struct ctl_table firmware_config_table[] = {
>  	{ }
>  };
>  EXPORT_SYMBOL_GPL(firmware_config_table);
> +
> +#endif
> -- 
> 2.21.0
> 

-- 
Cheers,
Stephen Rothwell

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