Re: [PATCH] drm/omap: fix memory barrier bug in DMM driver

2018-05-23 Thread Tomi Valkeinen
On 23/03/18 14:57, Peter Ujfalusi wrote: > From: Tomi Valkeinen > > A DMM timeout "timed out waiting for done" has been observed on DRA7 > devices. The timeout happens rarely, and only when the system is under > heavy load. > > Debugging showed that the timeout can be made to happen much more >

[PATCH] drm/omap: fix memory barrier bug in DMM driver

2018-03-23 Thread Peter Ujfalusi
From: Tomi Valkeinen A DMM timeout "timed out waiting for done" has been observed on DRA7 devices. The timeout happens rarely, and only when the system is under heavy load. Debugging showed that the timeout can be made to happen much more frequently by optimizing the DMM driver, so that there's