On Mon, 2015-09-28 at 15:23 +0800, yitian wrote: > > > > From: Andy Shevchenko [mailto:andy.shevchenko@xxxxxxxxx] > > Sent: Monday, September 28, 2015 3:06 PM > > To: Viresh Kumar <viresh.kumar@xxxxxxxxxx> > > Cc: yitian <yitian.bu@xxxxxxxxxxxxxx>; Viresh Kumar > > <vireshk@xxxxxxxxxx>; Andy Shevchenko > > <andriy.shevchenko@xxxxxxxxxxxxxxx>; Vinod Koul < > > vinod.koul@xxxxxxxxx>; > > Dan Williams <dan.j.williams@xxxxxxxxx>; dmaengine > > <dmaengine@xxxxxxxxxxxxxxx>; Linux Kernel Mailing List > > <linux-kernel@xxxxxxxxxxxxxxx> > > Subject: Re: [PATCH 1/1] dmaengine: dw: resolve recursion > > > I am not sure if this is a sane way of doing that, and we were > > > scanning > > > the descriptors for some valid reason.. > > > > Actually one of the patches in a pile sitting in my private repo is > > also including similar change. In my case the reason is to support > > cyclic transfers natively. > > > > Yes, i am using DW DMAC to support cyclic transfer. > Currently it is very easy to get recursion lock crash, but > after this patch everything is fine on my device. What is an actual hardware you are running kernel on? -- Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Intel Finland Oy -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
