Paweł Gronowski 9cb268215d
drm/amdgpu: Fix NULL dereference in dpm sysfs handlers ...
NULL dereference occurs when string that is not ended with space or
newline is written to some dpm sysfs interface (for example pp_dpm_sclk).
This happens because strsep replaces the tmp with NULL if the delimiter
is not present in string, which is then dereferenced by tmp[0].
Reproduction example:
sudo sh -c 'echo -n 1 > /sys/class/drm/card0/device/pp_dpm_sclk'
Signed-off-by: Paweł Gronowski <me@woland.xyz >
Signed-off-by: Alex Deucher <alexander.deucher@amd.com >
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9cb268215d