linux-kernel - Re: [PATCH v2] merge_config.sh: ignore unwanted grep errors

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Message-ID: <3f5df041-ae53-8719-41f4-7b56a49a8bbc@nvidia.com>
Date:   Tue, 3 Sep 2019 11:10:36 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Guillaume Tucker <guillaume.tucker@...labora.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Mark Brown <broonie@...nel.org>
CC:     <linux-kbuild@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <kernel@...labora.com>, <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH v2] merge_config.sh: ignore unwanted grep errors


On 02/09/2019 16:18, Guillaume Tucker wrote:
> The merge_config.sh script verifies that all the config options have
> their expected value in the resulting file and prints any issues as
> warnings.  These checks aren't intended to be treated as errors given
> the current implementation.  However, since "set -e" was added, if the
> grep command to look for a config option does not find it the script
> will then abort prematurely.
> 
> Handle the case where the grep exit status is non-zero by setting
> ACTUAL_VAL to an empty string to restore previous functionality.
> 
> Fixes: cdfca821571d ("merge_config.sh: Check error codes from make")
> Signed-off-by: Guillaume Tucker <guillaume.tucker@...labora.com>
> Cc: Jon Hunter <jonathanh@...dia.com>
> ---
> 
> Notes:
>     v2: use true rather than echo as per Jon Hunter's suggestion
> 
>  scripts/kconfig/merge_config.sh | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
> index d924c51d28b7..f2cc10b1d404 100755
> --- a/scripts/kconfig/merge_config.sh
> +++ b/scripts/kconfig/merge_config.sh
> @@ -177,7 +177,7 @@ make KCONFIG_ALLCONFIG=$TMP_FILE $OUTPUT_ARG $ALLTARGET
>  for CFG in $(sed -n -e "$SED_CONFIG_EXP1" -e "$SED_CONFIG_EXP2" $TMP_FILE); do
>  
>  	REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
> -	ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG")
> +	ACTUAL_VAL=$(grep -w -e "$CFG" "$KCONFIG_CONFIG" || true)
>  	if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
>  		echo "Value requested for $CFG not in final .config"
>  		echo "Requested value:  $REQUESTED_VAL"
> 

Thanks for fixing! Great if we could get this into -next as soon as
possible!

Acked-by: Jon Hunter <jonathanh@...dia.com>
Tested-by: Jon Hunter <jonathanh@...dia.com>

Cheers
Jon

-- 
nvpublic