[PATCH AUTOSEL 4.9 09/21] drm/omap: fix memory barrier bug in DMM driver

2018-11-04 Thread Sasha Levin
From: Tomi Valkeinen [ Upstream commit 538f66ba204944470a653a45f8befdf97c22 ] 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

[PATCH AUTOSEL 4.9 09/21] drm/omap: fix memory barrier bug in DMM driver

2018-11-04 Thread Sasha Levin
From: Tomi Valkeinen [ Upstream commit 538f66ba204944470a653a45f8befdf97c22 ] 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