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-rw-r--r--common/recipes-kernel/linux/files/0897-drm-amd-dal-zero-current-context-after-powerdown.patch39
1 files changed, 39 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0897-drm-amd-dal-zero-current-context-after-powerdown.patch b/common/recipes-kernel/linux/files/0897-drm-amd-dal-zero-current-context-after-powerdown.patch
new file mode 100644
index 00000000..1301a327
--- /dev/null
+++ b/common/recipes-kernel/linux/files/0897-drm-amd-dal-zero-current-context-after-powerdown.patch
@@ -0,0 +1,39 @@
+From 0fd8c895534ba20c89899148583b11bb60d7c0df Mon Sep 17 00:00:00 2001
+From: Eric Yang <eric.yang2@amd.com>
+Date: Tue, 15 Mar 2016 11:00:26 -0400
+Subject: [PATCH 0897/1110] drm/amd/dal: zero current context after powerdown
+
+Just in case we ever decide to use current_context in
+powerdown.
+
+Signed-off-by: Eric Yang <eric.yang2@amd.com>
+Acked-by: Harry Wentland <harry.wentland@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/dal/dc/core/dc.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/gpu/drm/amd/dal/dc/core/dc.c b/drivers/gpu/drm/amd/dal/dc/core/dc.c
+index 5d87597..3f28446 100644
+--- a/drivers/gpu/drm/amd/dal/dc/core/dc.c
++++ b/drivers/gpu/drm/amd/dal/dc/core/dc.c
+@@ -1081,14 +1081,14 @@ void dc_set_power_state(
+ /* NULL means "reset/release all DC targets" */
+ dc_commit_targets(dc, NULL, 0);
+
++ core_dc->hwss.power_down(core_dc);
++
+ /* Zero out the current context so that on resume we start with
+ * clean state, and dc hw programming optimizations will not
+ * cause any trouble.
+ */
+ memset(&core_dc->current_context, 0,
+ sizeof(core_dc->current_context));
+-
+- core_dc->hwss.power_down(core_dc);
+ break;
+ }
+
+--
+2.7.4
+