drm/amdgpu: IH process reset count when restart
Otherwise when IH process restart, count is zero, the loop will not exit to wake_up_all after processing AMDGPU_IH_MAX_NUM_IVS interrupts. Signed-off-by:Philip Yang <Philip.Yang@amd.com> Reviewed-by:
Christian König <christian.koenig@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com>
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