Re: [PATCH v2 0/2] drm/mediatek: make imported PRIME buffers contiguous

CK Hu
2019-08-15T01:41:01Z

Hi, Alexandre:

On Mon, 2019-07-29 at 14:33 +0900, Alexandre Courbot wrote:
> The default DMA segment size was used when importing PRIME buffers,
> which resulted in a chance of them not being contiguous in the virtual
> IO space of the device and mtk_gem_prime_import_sg_table() complaining
> that the SG table was not contiguous as it expects.
>
> This series fixes this issue by
>
> 1) Using the correct DMA device when importing PRIME buffers,
> 2) Setting a more suitable DMA segment size on the DMA device than the
> default 64KB.

For the series, applied to mediatek-drm-fixes-5.3 [1], thanks.

[1]
https://github.com/ckhu-mediatek/linux.git-tags/commits/mediatek-drm-fixes-5.3

>
> Changes since v1:
> - Split into two patches,
> - Fixed an error path that would have returned 0.
>
> Alexandre Courbot (2):
> drm/mediatek: use correct device to import PRIME buffers
> drm/mediatek: set DMA max segment size
>
> drivers/gpu/drm/mediatek/mtk_drm_drv.c | 49 ++++++++++++++++++++++++--
> drivers/gpu/drm/mediatek/mtk_drm_drv.h | 2 ++
> 2 files changed, 48 insertions(+), 3 deletions(-)
>