tag d9f2448359225d48d6ec2f9fe65cde2ec2b4d0ac
tagger Alexander Shishkin <alexander.shishkin@linux.intel.com> Fri May 03 11:39:08 2019 +0300
object c0e8a65abd2e4ad47e5257de6bde1822e9c458b6

intel_th: Updates for v5.2

These are:
  * Support for software trace sinks
  * Interrupt handling, MSI support
  * Reworks in resource passing between glue layers and driver core
  * Reworks in buffer management code
  * Various small reworks in the MSU code
  * Support for window switching in MSU "multi" mode
  * A fix for the MSU "single" mode, backportable all the way to v4.4
  * A new "rtit" subdevice

commit c0e8a65abd2e4ad47e5257de6bde1822e9c458b6
author Alexander Shishkin <alexander.shishkin@linux.intel.com> Fri Jan 04 16:11:38 2019 +0200
committer Alexander Shishkin <alexander.shishkin@linux.intel.com> Fri May 03 11:35:46 2019 +0300
tree c101ebe41edb615e40d301f8a32d5f6e8831ea08
parent eec5d091bf7fe991d839352bc503ff2afa3a71d0

intel_th: msu: Preserve pre-existing buffer configuration

The MSU configuration registers may contain buffer address/size set by
the BIOS or an external hardware debugger, which may want to take over
tracing from the driver when the driver is not actively tracing.

Preserve these settings when not actively tracing.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>