linux_dsm_epyc7002/drivers/soundwire
Richard Fitzgerald a4b7c0af61 soundwire: stream: Fix test for DP prepare complete
[ Upstream commit 3d3e88e336338834086278236d42039f3cde50e1 ]

In sdw_prep_deprep_slave_ports(), after the wait_for_completion()
the DP prepare status register is read. If this indicates that the
port is now prepared, the code should continue with the port setup.
It is irrelevant whether the wait_for_completion() timed out if the
port is now ready.

The previous implementation would always fail if the
wait_for_completion() timed out, even if the port was reporting
successful prepare.

This patch also fixes a minor bug where the return from sdw_read()
was not checked for error - any error code with LSBits clear could
be misinterpreted as a successful port prepare.

Fixes: 79df15b7d3 ("soundwire: Add helpers for ports operations")
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210618144745.30629-1-rf@opensource.cirrus.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:56:47 +02:00
..
bus_type.c soundwire: bus: add enumerated Slave device to device list 2020-09-28 11:17:40 +05:30
bus.c soundwire: bus: Fix device found flag correctly 2021-05-14 09:50:13 +02:00
bus.h soundwire: bus: add enumerated Slave device to device list 2020-09-28 11:17:40 +05:30
cadence_master.c soundwire: cadence: only prepare attached devices on clock stop 2021-05-11 14:47:19 +02:00
cadence_master.h soundwire: cadence: fix race condition between suspend and Slave device alerts 2020-09-09 13:14:42 +05:30
debugfs.c soundwire: debugfs: clarify SDPX license with GPL-2.0-only 2020-05-05 08:51:44 +05:30
generic_bandwidth_allocation.c soundwire: remove an unnecessary NULL check 2020-09-23 15:34:48 +05:30
intel_init.c soundwire: intel: fix possible crash when no device is detected 2021-03-04 11:38:22 +01:00
intel.c soundwire: intel: enable test modes 2020-09-23 15:29:30 +05:30
intel.h soundwire: intel: pass link_mask information to each master 2020-09-03 16:14:39 +05:30
Kconfig soundwire: Add generic bandwidth allocation algorithm 2020-09-18 17:48:51 +05:30
Makefile soundwire: Add generic bandwidth allocation algorithm 2020-09-18 17:48:51 +05:30
master.c soundwire: master: use pm_runtime_set_active() on add 2020-12-30 11:53:28 +01:00
mipi_disco.c soundwire: fix port_ready[] dynamic allocation in mipi_disco 2020-09-03 16:02:29 +05:30
qcom.c soundwire: qcom: Fix build failure when slimbus is module 2020-12-30 11:53:22 +01:00
slave.c soundwire: sysfs: add slave status and device number before probe 2020-09-28 11:17:43 +05:30
stream.c soundwire: stream: Fix test for DP prepare complete 2021-07-14 16:56:47 +02:00
sysfs_local.h soundwire: sysfs: add slave status and device number before probe 2020-09-28 11:17:43 +05:30
sysfs_slave_dpn.c soundwire: Fix DEBUG_LOCKS_WARN_ON for uninitialized attribute 2020-12-30 11:53:20 +01:00
sysfs_slave.c soundwire: sysfs: add slave status and device number before probe 2020-09-28 11:17:43 +05:30