[BUG][AMD tahiti xt][amdgpu] broken dpm

[sylvain.bertrand at gmail.com]

bisected: commit 4dea25853a6c0c16e373665153bd9eb6edc6319e

drm/[radeon|amdgpu]: Replace one-element array and use struct_size() helper
...
Also, make use of the new struct_size() helper to properly calculate the
size of struct SISLANDS_SMC_SWSTATE.


regards,

-- 
Sylvain