Thread (151 messages) 151 messages, 12 authors, 2026-01-23
STALE185d REVIEWED: 1 (0M)

[PATCH 6.12 040/139] drm/amd/pm: fix smu overdrive data type wrong issue on smu 14.0.2

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2026-01-21 18:19:16
Also in: linux-patches
Subsystem: amd powerplay and swsmu, drm drivers, radeon and amdgpu drm drivers, the rest · Maintainers: Kenneth Feng, David Airlie, Simona Vetter, Alex Deucher, Christian König, Linus Torvalds

6.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Yang Wang <redacted>

[ Upstream commit 90dbc0bc2aa60021615969841fed06790c992bde ]

resolving the issue of incorrect type definitions potentially causing calculation errors.

Fixes: 54f7f3ca982a ("drm/amdgpu/swm14: Update power limit logic")
Signed-off-by: Yang Wang <redacted>
Reviewed-by: Hawking Zhang <redacted>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit e3a03d0ae16d6b56e893cce8e52b44140e1ed985)
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
index d0aed85db18cc..f34cef26b382c 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
@@ -1672,8 +1672,9 @@ static int smu_v14_0_2_get_power_limit(struct smu_context *smu,
 		table_context->power_play_table;
 	PPTable_t *pptable = table_context->driver_pptable;
 	CustomSkuTable_t *skutable = &pptable->CustomSkuTable;
-	uint32_t power_limit, od_percent_upper = 0, od_percent_lower = 0;
+	int16_t od_percent_upper = 0, od_percent_lower = 0;
 	uint32_t msg_limit = pptable->SkuTable.MsgLimits.Power[PPT_THROTTLER_PPT0][POWER_SOURCE_AC];
+	uint32_t power_limit;
 
 	if (smu_v14_0_get_current_power_limit(smu, &power_limit))
 		power_limit = smu->adev->pm.ac_power ?
-- 
2.51.0


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