[PATCH 00/17] coresight: next v4.12-rc4

On Thu, 15 Jun 2017 23:50:54 +0800
Leo Yan [off-list ref] wrote:

Looked into the code, and I must apologize I have not verified the
command when wrote the doc. As you pointed out, the closing file
operation releases the constraint for PM QoS.

Below command can work (I tested):
exec 3<> /dev/cpu_dma_latency; echo 0 >&3

Will commit one patch for this.

Did I miss this?  Where was it posted?

Thanks,

Kim