drm/amd/pm/powerplay: Prevent division by zero

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commit 4b8c3c0d17 upstream.

The user can set any speed value.
If speed is greater than UINT_MAX/8, division by zero is possible.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: c52dcf4919 ("drm/amd/pp: Avoid divide-by-zero in fan_ctrl_set_fan_speed_rpm")
Signed-off-by: Denis Arefev <arefev@swemel.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Denis Arefev 2025-03-21 14:08:15 +03:00 • committed by Greg Kroah-Hartman

parent 5096174074

commit 587de3ca78

1 changed files with 2 additions and 2 deletions

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drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_thermal.c

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