linux-kernel - Re: [PATCH] drivers: staging/lustre: conrpc.c - fix sparse error: incompatible types in comparison expression (different address spaces)

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Date:   Thu, 1 Jun 2017 18:42:57 -0300
From:   Tordek <kedrot@...il.com>
To:     Oleg Drokin <oleg.drokin@...el.com>, lustre-devel@...ts.lustre.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drivers: staging/lustre: conrpc.c - fix sparse error:
 incompatible types in comparison expression (different address spaces)

This is fairly minor but it reveals a few hidden warnings, could I get
some feedback on it?

Thanks
--
Guillermo

On 5 May 2017 at 10:53, Tordek <kedrot@...il.com> wrote:
> This patch makes a lot of new warnings pop up, because the error is
> blocking the rest of the file from being processed.
>
> On 5 May 2017 at 10:51, Guillermo O. Freschi <kedrot@...il.com> wrote:
>> Signed-off-by: Guillermo O. Freschi <kedrot@...il.com>
>> ---
>>  drivers/staging/lustre/lnet/selftest/conrpc.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/staging/lustre/lnet/selftest/conrpc.c b/drivers/staging/lustre/lnet/selftest/conrpc.c
>> index da36c55b86d3..f4578200994f 100644
>> --- a/drivers/staging/lustre/lnet/selftest/conrpc.c
>> +++ b/drivers/staging/lustre/lnet/selftest/conrpc.c
>> @@ -487,7 +487,7 @@ lstcon_rpc_trans_interpreter(struct lstcon_rpc_trans *trans,
>>                                    sizeof(struct list_head)))
>>                         return -EFAULT;
>>
>> -               if (tmp.next == head_up)
>> +               if ((struct list_head __user *)tmp.next == head_up)
>>                         return 0;
>>
>>                 next = tmp.next;
>> --
>> 2.11.0
>>