linux-kernel - Re: [PATCH 1/1] merge_config.sh: ignore unwanted grep errors

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Date:   Mon, 2 Sep 2019 15:21:04 +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 <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH 1/1] merge_config.sh: ignore unwanted grep errors


On 02/09/2019 15:14, Guillaume Tucker wrote:
> + Jon Hunter who hit a similar issue

Thanks for adding me.

> On 28/08/2019 21:19, 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>
>> ---
>>  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..d673268d414b 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" || echo)

Shouldn't this just be 'true' instead of 'echo'?

Cheers
Jon

-- 
nvpublic