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

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

Fixes: a8c21a5451 ("drm/etnaviv: add initial etnaviv DRM driver")
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Christian Gmeiner <cgmeiner@igalia.com>
This commit is contained in:
Lucas Stach
2024-06-21 19:11:06 +02:00
parent a3ecd97aa6
commit 58979ad633
1 changed files with 4 additions and 2 deletions
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drivers/gpu/drm/etnaviv/etnaviv_gem.c
+4 -2
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@@ -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;