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ce110ec311
If the level 0 latency is 0 we can't do anything. Return an error rather than success. While this can't happen due to WaWmMemoryReadLatency, it can happen if the user clears out the level 0 latency via debugfs. v2: Clarify how how we can end here with zero level 0 latency (Matt) Cc: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181114210729.16185-6-ville.syrjala@linux.intel.com Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> |
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