On Fri, Aug 02, 2019 at 05:14:35PM -0700, Rob Clark wrote:
Hi Sasha,
It's probably best *not* to backport this patch.. drm/msm abuses the
DMA API in a way that it is not intended be used, to work around the
lack of cache sync API exported to kernel modules on arm/arm64. I
couldn't really
Hi Sasha,
It's probably best *not* to backport this patch.. drm/msm abuses the
DMA API in a way that it is not intended be used, to work around the
lack of cache sync API exported to kernel modules on arm/arm64. I
couldn't really guarantee that this patch does the right thing on
older versions
From: Rob Clark
[ Upstream commit 0036bc73ccbe7e600a3468bf8e8879b122252274 ]
Recently splats like this started showing up:
WARNING: CPU: 4 PID: 251 at drivers/iommu/dma-iommu.c:451
__iommu_dma_unmap+0xb8/0xc0
Modules linked in: ath10k_snoc ath10k_core fuse msm ath mac80211 uvcvideo
