drm/amd/powerplay: fix a crash when overclocking Vega M

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Avoid kernel crash when vddci_control is SMU7_VOLTAGE_CONTROL_NONE and
vddci_voltage_table is empty. It has been tested on Intel Hades Canyon
(i7-8809G).

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=208489
Fixes: ac7822b002 ("drm/amd/powerplay: add smumgr support for VEGAM (v2)")
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Qiu Wenbo <qiuwenbo@phytium.com.cn>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Qiu Wenbo 2020-07-17 15:09:57 +08:00 • committed by Alex Deucher

parent 85dec7176b

commit 0c56c862e7

1 changed files with 6 additions and 4 deletions

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drivers/gpu/drm/amd/powerplay/smumgr/vegam_smumgr.c

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