From: Evan Quan <evan.quan@amd.com>
Date: Mon, 6 Nov 2017 10:33:45 +0800
Subject: drm/amd/powerplay: suppress KASAN out of bounds warning in
 vega10_populate_all_memory_levels
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Git-commit: 1d864b82a2bde6c583f23dfc7183d07dc9b48b6d
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Evan Quan <evan.quan@amd.com>
Tested-and-Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
@@ -1807,6 +1807,10 @@ static int vega10_populate_all_memory_le
 	mem_channels = (cgs_read_register(hwmgr->device, reg) &
 			DF_CS_AON0_DramBaseAddress0__IntLvNumChan_MASK) >>
 			DF_CS_AON0_DramBaseAddress0__IntLvNumChan__SHIFT;
+	PP_ASSERT_WITH_CODE(mem_channels < ARRAY_SIZE(channel_number),
+			"Mem Channel Index Exceeded maximum!",
+			return -1);
+
 	pp_table->NumMemoryChannels = cpu_to_le16(mem_channels);
 	pp_table->MemoryChannelWidth =
 			cpu_to_le16(HBM_MEMORY_CHANNEL_WIDTH *