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From 6ea4bd59fa04964160acf28d1ac641bb0afad4b6 Mon Sep 17 00:00:00 2001
From: Shirish S <shirish.s@amd.com>
Date: Thu, 26 Oct 2017 11:47:42 +0530
Subject: [PATCH 2632/4131] drm/amd/display: fix null pointer dereference
While setting cursor position in case of mpo,
input_pixel_processor is not available for underlay,
hence add check of the same to avoid null pointer
access issue.
Signed-off-by: Shirish S <shirish.s@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 2 +-
1 file changed, 1 insertion(+), 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 5cf69af..572b885 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -288,7 +288,7 @@ bool dc_stream_set_cursor_position(
pos_cpy.enable = false;
- if (ipp->funcs->ipp_cursor_set_position != NULL)
+ if (ipp !=NULL && ipp->funcs->ipp_cursor_set_position != NULL)
ipp->funcs->ipp_cursor_set_position(ipp, &pos_cpy, ¶m);
if (mi != NULL && mi->funcs->set_cursor_position != NULL)
--
2.7.4
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