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From 4cb800f304999a45fa7aaa25d23e8fda5cf5a253 Mon Sep 17 00:00:00 2001
From: Huang Rui <ray.huang@amd.com>
Date: Mon, 25 Feb 2019 19:43:00 +0800
Subject: [PATCH 1497/2940] drm/amd/powerplay: fix the issue of checking on
message mapping
The vega20_message_map[index] scope should be in PPSMC_Message_Count not in
SMU_MSG_MAX_COUNT.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/powerplay/vega20_ppt.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
index e6db56d158eb..6763dcd21cf1 100644
--- a/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/vega20_ppt.c
@@ -131,10 +131,15 @@ static int vega20_message_map[SMU_MSG_MAX_COUNT] = {
static int vega20_get_smu_msg_index(struct smu_context *smc, uint32_t index)
{
- if (index > SMU_MSG_MAX_COUNT || index > PPSMC_Message_Count)
+ int val;
+ if (index > SMU_MSG_MAX_COUNT)
return -EINVAL;
- return vega20_message_map[index];
+ val = vega20_message_map[index];
+ if (val > PPSMC_Message_Count)
+ return -EINVAL;
+
+ return val;
}
static int vega20_allocate_dpm_context(struct smu_context *smu)
--
2.17.1
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