android_kernel_motorola_sm6225/drivers/hwtracing/intel_th
Alexander Shishkin c79fef7357 intel_th: Wait until port is in reset before programming it
[ Upstream commit ab1afed701d2db7eb35c1a2526a29067a38e93d1 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:16:10 +02:00
..
acpi.c intel_th: Add ACPI glue layer 2018-03-28 18:47:23 +03:00
core.c intel_th: Wait until port is in reset before programming it 2021-07-20 16:16:10 +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 2021-07-20 16:16:10 +02:00
gth.h intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate 2018-03-28 18:47:19 +03:00
intel_th.h intel_th: Wait until port is in reset before programming it 2021-07-20 16:16:10 +02:00
Kconfig intel_th: Add ACPI glue layer 2018-03-28 18:47:23 +03:00
Makefile intel_th: Add ACPI glue layer 2018-03-28 18:47:23 +03:00
msu.c intel_th: Fix user-visible error codes 2020-03-25 08:06:11 +01:00
msu.h intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate 2018-03-28 18:47:19 +03:00
pci.c intel_th: pci: Add Alder Lake-M support 2021-05-22 10:59:20 +02:00
pti.c intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate 2018-03-28 18:47:19 +03:00
pti.h intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate 2018-03-28 18:47:19 +03:00
sth.c intel_th: Fix a NULL dereference when hub driver is not loaded 2020-07-22 09:32:12 +02:00
sth.h intel_th: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate 2018-03-28 18:47:19 +03:00