On gfx9 hardware the value is not wrapped and is a 64-bit value. So
we reduce it modulo the ring size.
Signed-off-by: Tom St Denis <tom.stde...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index ac0ce3f27f87..b6d2c0b2a501 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -320,8 +320,8 @@ static ssize_t amdgpu_debugfs_ring_read(struct file *f,
char __user *buf,
if (*pos < 12) {
early[0] = amdgpu_ring_get_rptr(ring);
- early[1] = amdgpu_ring_get_wptr(ring);
- early[2] = ring->wptr;
+ early[1] = amdgpu_ring_get_wptr(ring) & ((ring->ring_size >> 2)
- 1);
+ early[2] = ring->wptr & ((ring->ring_size >> 2) - 1);
for (i = *pos / 4; i < 3 && size; i++) {
r = put_user(early[i], (uint32_t *)buf);
if (r)
--
2.12.0
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