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| author | Lijo Lazar <lijo.lazar@amd.com> | 2026-04-18 06:21:17 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-04-21 16:51:16 -0400 |
| commit | 6fc63d80c01a480e3d2c98620f07d46e5bcfc85a (patch) | |
| tree | 46cb9eb102f08c5f7cd54a1c57eb02b2d9cc303b /drivers | |
| parent | bc621e91d6fc004cfae9148c5a91acad19ada3e4 (diff) | |
| download | linux-6fc63d80c01a480e3d2c98620f07d46e5bcfc85a.tar.gz linux-6fc63d80c01a480e3d2c98620f07d46e5bcfc85a.zip | |
drm/amd/pm: Check SMUv13.0.6/12 metrics integrity
Check if data fetch is proper by matching the first few bytes against
0xFFs. If 0xFFs, that means data couldn't be read properly.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c index cd0a23f432ff..36716541e505 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c @@ -783,6 +783,10 @@ int smu_v13_0_6_get_metrics_table(struct smu_context *smu, void *metrics_table, if (ret) return ret; + if (!memchr_inv(smu_table->metrics_table, 0xff, + min(16, table_size))) + return -EHWPOISON; + smu_table->metrics_time = jiffies; } |