diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/1087-drm-amdgpu-Do-not-ref-count-on-validation-set.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/1087-drm-amdgpu-Do-not-ref-count-on-validation-set.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/1087-drm-amdgpu-Do-not-ref-count-on-validation-set.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/1087-drm-amdgpu-Do-not-ref-count-on-validation-set.patch new file mode 100644 index 00000000..8e1fdb87 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/1087-drm-amdgpu-Do-not-ref-count-on-validation-set.patch @@ -0,0 +1,34 @@ +From c0a04cc1658aea0d02c6a12cca45e67232daef1e Mon Sep 17 00:00:00 2001 +From: "Leo (Sunpeng) Li" <sunpeng.li@amd.com> +Date: Wed, 22 Nov 2017 11:05:00 -0500 +Subject: [PATCH 1087/4131] drm/amdgpu: Do not ref-count on validation set + +The validation set is only alive for the duration of +amdgpu_dm_atomic_check. Since modifications of the set are done through +an interface, and only atomic_check calls those interfaces, we do not +need to manage ref-counting on it. + +The case of another owner freeing a stream state -- and therefore freeing +a reference that the validation set has -- won't happen. The set tracks +the old stream states, which will not be released during atomic_check. + +Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com> +--- + drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 - + 1 file changed, 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +index 51d06df..0d95190 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +@@ -4713,7 +4713,6 @@ int amdgpu_dm_atomic_check(struct drm_device *dev, + old_acrtc_state = to_dm_crtc_state(crtc->state); + + if (old_acrtc_state->stream) { +- dc_stream_retain(old_acrtc_state->stream); + set[set_count].stream = old_acrtc_state->stream; + ++set_count; + } +-- +2.7.4 + |