linux-stable/drivers/hwtracing/intel_th
Alexander Shishkin ab1afed701 intel_th: Wait until port is in reset before programming it
Some devices don't drain their pipelines if we don't make sure that
the corresponding output port is in reset before programming it for
a new trace capture, resulting in bits of old trace appearing in the
new trace capture. Fix that by explicitly making sure the reset is
asserted before programming new trace capture.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Link: https://lore.kernel.org/r/20210621151246.31891-5-alexander.shishkin@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-24 15:49:32 +02:00
..
acpi.c intel_th: Communicate IRQ via resource 2019-05-03 18:14:29 +02:00
core.c intel_th: Wait until port is in reset before programming it 2021-06-24 15:49:32 +02:00
debug.c intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate 2018-03-28 18:47:19 +03:00
debug.h intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate 2018-03-28 18:47:19 +03:00
gth.c intel_th: Wait until port is in reset before programming it 2021-06-24 15:49:32 +02:00
gth.h intel_th: Add switch triggering support 2019-05-03 18:16:21 +02:00
intel_th.h intel_th: Wait until port is in reset before programming it 2021-06-24 15:49:32 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile intel_th: msu-sink: An example msu buffer "sink" 2019-07-25 13:03:18 +02:00
msu-sink.c intel_th: msu-sink: An example msu buffer "sink" 2019-07-25 13:03:18 +02:00
msu.c intel_th: msu: Make contiguous buffers uncached 2021-06-24 15:49:32 +02:00
msu.h Merge 5.3-rc5 into char-misc-next 2019-08-19 07:11:53 +02:00
pci.c intel_th: pci: Add Alder Lake-M support 2021-04-16 07:26:50 +02:00
pti.c intel_th: Constify attribute_group structs 2021-04-16 07:26:50 +02:00
pti.h intel_th: Use the correct style for SPDX License Identifier 2019-07-30 19:41:53 +02:00
sth.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
sth.h intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate 2018-03-28 18:47:19 +03:00