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drm/amd/pm: Prevent division by zero
authorDenis Arefev <arefev@swemel.ru>
Fri, 21 Mar 2025 11:08:16 +0000 (14:08 +0300)
committerAlex Deucher <alexander.deucher@amd.com>
Wed, 26 Mar 2025 21:41:43 +0000 (17:41 -0400)
commit7c246a05df51c52fe0852ce56ba10c41e6ed1f39
tree5a413cc5b032134d53bec0470dcb150071b7ef5etree
parent4b8c3c0d17c07f301011e2908fecd2ebdcfe3d1ccommit | diff
drm/amd/pm: Prevent division by zero

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: c52dcf49195d ("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
drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_thermal.c diff | blob | history
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