Am 01.03.2018 um 15:43 schrieb Tom St Denis:
The read/write pointers on sdma4 devices increment
beyond the ring size and should be masked. Tested
on my Ryzen 2400G.
Signed-off-by: Tom St Denis <[email protected]>
Reviewed-by: Christian König <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index e223b0f6417b..d5f526f38e50 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -484,7 +484,7 @@ static ssize_t amdgpu_debugfs_ring_read(struct file *f,
char __user *buf,
result = 0;
if (*pos < 12) {
- early[0] = amdgpu_ring_get_rptr(ring);
+ early[0] = amdgpu_ring_get_rptr(ring) & ring->buf_mask;
early[1] = amdgpu_ring_get_wptr(ring) & ring->buf_mask;
early[2] = ring->wptr & ring->buf_mask;
for (i = *pos / 4; i < 3 && size; i++) {
_______________________________________________
amd-gfx mailing list
[email protected]
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
