Commit 58979ad6 authored by Lucas Stach's avatar Lucas Stach
Browse files

drm/etnaviv: fix DMA direction handling for cached RW buffers 



The dma sync operation needs to be done with DMA_BIDIRECTIONAL when
the BO is prepared for both read and write operations.

Fixes: a8c21a54 ("drm/etnaviv: add initial etnaviv DRM driver")
Signed-off-by: default avatarLucas Stach <l.stach@pengutronix.de>
Reviewed-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: default avatarChristian Gmeiner <cgmeiner@igalia.com>
parent a3ecd97a

drivers/gpu/drm/etnaviv/etnaviv_gem.c

+4 −2
Original line number Diff line number Diff line
@@ -355,9 +355,11 @@ static void *etnaviv_gem_vmap_impl(struct etnaviv_gem_object *obj) 


static inline enum dma_data_direction etnaviv_op_to_dma_dir(u32 op)

{

	if (op & ETNA_PREP_READ)

	op &= ETNA_PREP_READ | ETNA_PREP_WRITE;



	if (op == ETNA_PREP_READ)

		return DMA_FROM_DEVICE;

	else if (op & ETNA_PREP_WRITE)

	else if (op == ETNA_PREP_WRITE)

		return DMA_TO_DEVICE;

	else

		return DMA_BIDIRECTIONAL;