From a8d0fb2fa3e71d73d5cebcd0fe10e18d3b2264e9 Mon Sep 17 00:00:00 2001 From: Tom St Denis Date: Thu, 1 Mar 2018 09:39:57 -0500 Subject: [PATCH] drm/amd/amdgpu: Mask rptr as well in ring debugfs MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Alex Deucher Reviewed-by: Christian König Signed-off-by: Alex Deucher --- 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 13044e66dcaf..561d3312af32 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c @@ -481,7 +481,7 @@ 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++) { -- 2.30.2