> 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. I am waiting for your further guide. Thanks. -- 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
