linux-kernel - Re: [PATCH 1/6] dmaengine: introduce is_slave

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 16 Nov 2012 17:27:33 +0200
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
Cc:	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Vinod Koul <vinod.koul@...el.com>,
	spear-devel <spear-devel@...t.st.com>,
	linux-kernel@...r.kernel.org,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH 1/6] dmaengine: introduce is_slave_xfer function

On Fri, Nov 16, 2012 at 4:03 PM, Viresh Kumar <viresh.kumar@...aro.org> wrote:
> On 16 November 2012 19:29, Andy Shevchenko
> <andriy.shevchenko@...ux.intel.com> wrote:
>> This function helps to distinguish the slave type of transfer by checking the
>> direction parameter.
>>
>> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
>> Cc: Nicolas Ferre <nicolas.ferre@...el.com>
>> Cc: Mika Westerberg <mika.westerberg@...ux.intel.com>
>> Cc: Guennadi Liakhovetski <g.liakhovetski@....de>
>> Cc: Linus Walleij <linus.walleij@...aro.org>
>> ---
>>  include/linux/dmaengine.h |    5 +++++
>>  1 file changed, 5 insertions(+)
>>
>> diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
>> index 6402b18..3e1a9026 100644
>> --- a/include/linux/dmaengine.h
>> +++ b/include/linux/dmaengine.h
>> @@ -618,6 +618,11 @@ static inline int dmaengine_slave_config(struct dma_chan *chan,
>>                         (unsigned long)config);
>>  }
>>
>> +static inline bool is_slave_xfer(enum dma_transfer_direction direction)
>> +{
>> +       return (direction == DMA_MEM_TO_DEV) || (direction == DMA_DEV_TO_MEM);
>> +}
>
> Reviewed-by: Viresh Kumar <viresh.kumar@...aro.org>
>
> Though i still have vote to include DMA_DEV_TO_DEV in thist list :)

I propose to do this later when we have a real user of it. Otherwise
it requires to do additional (sometimes useless) checks.


-- 
With Best Regards,
Andy Shevchenko
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/