linux-kernel - Re: dmaengine: dw-dmac: Custom cyclic API (Why?)

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]

Message-ID: <1483356603.9552.197.camel@linux.intel.com>
Date:   Mon, 02 Jan 2017 13:30:03 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Vinod Koul <vinod.koul@...el.com>
Cc:     Jose Abreu <Jose.Abreu@...opsys.com>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        vireshk@...nel.org
Subject: Re: dmaengine: dw-dmac: Custom cyclic API (Why?)

On Mon, 2017-01-02 at 15:48 +0530, Vinod Koul wrote:
> On Mon, Jan 02, 2017 at 10:38:00AM +0200, Andy Shevchenko wrote:
> > On Fri, 2016-12-30 at 12:05 +0000, Jose Abreu wrote:
> > > ++dw-dmac Maintainers

> > I used to have some semi-finished patch to switch to generic API,
> > though
> > at that point I had no means to test it.
> > 
> > Since I eventually got iDMA 32-bit, which is used as LPE Audio DMA
> > engine, support in my branch I might test it in the future, though I
> > think someone else would be much faster than me.
> 
> no we can't, since the DSP is involved and takes control, so unless we
> do
> lots of nasty hacks, it won't be testable. I don't see the ROI for
> such an
> effort.

Thanks for clarification

> btw, feel free to test and send patches if you have such a h/w

Actually we have AVR32 connected to our lab. So, I can test it there,
but I rather need a patch to use some dummy stub instead of codec (it
has no codec connected).

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy