diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/3626-drm-amd-amdgpu-Mask-rptr-as-well-in-ring-debugfs.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/3626-drm-amd-amdgpu-Mask-rptr-as-well-in-ring-debugfs.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/3626-drm-amd-amdgpu-Mask-rptr-as-well-in-ring-debugfs.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/3626-drm-amd-amdgpu-Mask-rptr-as-well-in-ring-debugfs.patch new file mode 100644 index 00000000..f52a2392 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/3626-drm-amd-amdgpu-Mask-rptr-as-well-in-ring-debugfs.patch @@ -0,0 +1,31 @@ +From a86d598009a6b0a4c61c272dc89ddafc2df8363d Mon Sep 17 00:00:00 2001 +From: Tom St Denis <tom.stdenis@amd.com> +Date: Thu, 1 Mar 2018 09:39:57 -0500 +Subject: [PATCH 3626/4131] drm/amd/amdgpu: Mask rptr as well in ring debugfs + +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 <tom.stdenis@amd.com> +Reviewed-by: Alex Deucher <alexander.deucher@amd.com> +--- + 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 e223b0f..d5f526f 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++) { +-- +2.7.4 + |