The dma sync operation needs to be done with DMA_BIDIRECTIONAL when
the BO is prepared for both read and write operations.
Fixes: a8c21a5451d8 ("drm/etnaviv: add initial etnaviv DRM driver")
Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
---
v2: switch conditions to be exact matches
---
drivers/gpu/drm/etnaviv/etnaviv_gem.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
index 71a6d2b1c80f..5c0c9d4e3be1 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -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;
--
2.39.2
