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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_mpc.c
..
..
@@ -206,8 +206,9 @@
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 		/* check insert_above_mpcc exist in tree->opp_list */
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 		struct mpcc *temp_mpcc = tree->opp_list;
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-		while (temp_mpcc && temp_mpcc->mpcc_bot != insert_above_mpcc)
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-			temp_mpcc = temp_mpcc->mpcc_bot;
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+		if (temp_mpcc != insert_above_mpcc)
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+			while (temp_mpcc && temp_mpcc->mpcc_bot != insert_above_mpcc)
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+				temp_mpcc = temp_mpcc->mpcc_bot;
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 		if (temp_mpcc == NULL)
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 			return NULL;
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 	}