Re: [PATCH 3/4] error: Remove NULL checks on error_propagate() calls (again)

[Markus Armbruster <armbru@redhat.com>]

Eric Blake <eblake@redhat.com> writes:

> On 7/22/20 3:40 AM, Markus Armbruster wrote:
>> Patch created mechanically by rerunning:
>>
>>      $ spatch --sp-file scripts/coccinelle/error_propagate_null.cocci \
>>               --macro-file scripts/cocci-macro-file.h \
>>               --use-gitgrep .
>>
>> Cc: Jens Freimann <jfreimann@redhat.com>
>> Cc: Hailiang Zhang <zhang.zhanghailiang@huawei.com>
>> Cc: Juan Quintela <quintela@redhat.com>
>> Signed-off-by: Markus Armbruster <armbru@redhat.com>
>> ---
>
>> +++ b/migration/colo.c
>> @@ -798,9 +798,7 @@ static void colo_incoming_process_checkpoint(MigrationIncomingState *mis,
>>         colo_send_message(mis->to_src_file,
>> COLO_MESSAGE_VMSTATE_LOADED,
>>                    &local_err);
>> -    if (local_err) {
>> -        error_propagate(errp, local_err);
>> -    }
>> +    error_propagate(errp, local_err);
>>   }
>
> As this is mechanical, it is fine. But there is now a further cleanup
> possible of passing errp directly to colo_send_message, and possibly
> dropping local_err altogether.

True.

The patch is small and simple enough for squashing in further manual
cleanups.  I'd like to first check whether a followup patch created with
the machinery I used for eliminating error_propagate() comes out better.

> Reviewed-by: Eric Blake <eblake@redhat.com>

Thanks!