linux-kernel - Re: [PATCH] scatterlist.h: Change CONFIG_DEBUG_SG for ifdef statement in sg_set

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Message-ID: <CAPDOMVgTNSTzXENWZvWhuJvHRoPBRBYSExNxrwqeFGyQ44YA-w@mail.gmail.com>
Date:	Sun, 3 Aug 2014 13:30:44 -0400
From:	Nick Krause <xerofoify@...il.com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>
Subject: Re: [PATCH] scatterlist.h: Change CONFIG_DEBUG_SG for ifdef statement
 in sg_set_bf

On Sun, Aug 3, 2014 at 8:28 AM, Sergei Shtylyov
<sergei.shtylyov@...entembedded.com> wrote:
> Hello.
>
>
> On 03-08-2014 6:56, Nicholas Krause wrote:
>
>> This changes the ifdef statement  in sg_set_bg to !CONFIG_DEBUG_SG in
>> order
>> to avoid a bug with xhci dequence/enquence functions.
>
>
>    dequeue/enqueue?
>
>
>> Signed-off-by: Nicholas Krause <xerofoify@...il.com>
>> ---
>>   include/linux/scatterlist.h | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>
>
>> diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h
>> index adae88f..62de7b3 100644
>> --- a/include/linux/scatterlist.h
>> +++ b/include/linux/scatterlist.h
>> @@ -111,7 +111,7 @@ static inline struct page *sg_page(struct scatterlist
>> *sg)
>>   static inline void sg_set_buf(struct scatterlist *sg, const void *buf,
>>                               unsigned int buflen)
>>   {
>> -#ifdef CONFIG_DEBUG_SG
>> +#ifdef !CONFIG_DEBUG_SG
>
>
>    Didn't you mean #ifndef instead? I guess you didn't even try to
> build-test this.
>
>
>>         BUG_ON(!virt_addr_valid(buf));
>>   #endif
>>         sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
>
>
> WBR, Sergei
>
I am going to stay around and learn more but am going to check my
patches better as this is
my fault.
Regards Nick
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