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From d5cc300932b74265f3fc07e079ff8d11d4727adb Mon Sep 17 00:00:00 2001
From: David Francis <David.Francis@amd.com>
Date: Mon, 25 Mar 2019 09:44:04 -0400
Subject: [PATCH 1773/2940] drm/amd/display: Handle get crtc position error
[Why]
dc_stream_get_crtc_position can return false.
This was unhandled in delay_cursor_until_vupdate
[How]
If dc_stream_get_crtc_position returns false, something
is weird. Don't delay.
Change-Id: Id0fc61792aaa248594deb46d9984bcb3fb78559c
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet Lakha@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
index f7a293902234..e10479d58c11 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -211,7 +211,8 @@ static void delay_cursor_until_vupdate(struct pipe_ctx *pipe_ctx, struct dc *dc)
ASIC_REV_IS_RAVEN(stream->ctx->asic_id.hw_internal_rev)) {
vupdate_line = get_vupdate_offset_from_vsync(pipe_ctx);
- dc_stream_get_crtc_position(dc, &stream, 1, &vpos, &nvpos);
+ if (!dc_stream_get_crtc_position(dc, &stream, 1, &vpos, &nvpos))
+ return;
if (vpos >= vupdate_line)
return;
--
2.17.1
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