linux/drivers/soundwire
Johan Hovold c40d6b3249 soundwire: fix enumeration completion
The soundwire subsystem uses two completion structures that allow
drivers to wait for soundwire device to become enumerated on the bus and
initialised by their drivers, respectively.

The code implementing the signalling is currently broken as it does not
signal all current and future waiters and also uses the wrong
reinitialisation function, which can potentially lead to memory
corruption if there are still waiters on the queue.

Not signalling future waiters specifically breaks sound card probe
deferrals as codec drivers can not tell that the soundwire device is
already attached when being reprobed. Some codec runtime PM
implementations suffer from similar problems as waiting for enumeration
during resume can also timeout despite the device already having been
enumerated.

Fixes: fb9469e54f ("soundwire: bus: fix race condition with enumeration_complete signaling")
Fixes: a90def0681 ("soundwire: bus: fix race condition with initialization_complete signaling")
Cc: stable@vger.kernel.org      # 5.7
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Rander Wang <rander.wang@linux.intel.com>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20230705123018.30903-2-johan+linaro@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-07-12 22:30:15 +05:30
..
amd_manager.c soundwire: amd: Improve error message in remove callback 2023-05-29 10:49:46 +05:30
amd_manager.h soundwire: amd: handle SoundWire wake enable interrupt 2023-04-12 15:30:36 +05:30
bus_type.c soundwire updates for 6.3 2023-02-24 17:29:52 -08:00
bus.c soundwire: fix enumeration completion 2023-07-12 22:30:15 +05:30
bus.h soundwire: export sdw_compute_slave_ports() function 2023-04-12 15:30:35 +05:30
cadence_master.c soundwire: cadence: revisit parity injection 2023-05-29 10:49:47 +05:30
cadence_master.h soundwire: intel/cadence: update hardware reset sequence 2023-05-29 10:49:47 +05:30
debugfs.c soundwire: debugfs: Add missing SCP registers 2023-06-08 17:10:32 +05:30
dmi-quirks.c soundwire: dmi-quirks: add new mapping for HP Spectre x360 2023-05-27 16:07:47 +05:30
generic_bandwidth_allocation.c soundwire: bandwidth allocation: Remove pointless variable 2023-06-08 17:09:11 +05:30
intel_ace2x_debugfs.c soundwire: intel_ace2x: add debugfs support 2023-05-27 16:06:45 +05:30
intel_ace2x.c soundwire: intel_ace2x: add pre/post bank switch callbacks 2023-05-27 16:06:47 +05:30
intel_auxdevice.c soundwire: intel_ace2x: add new_peripheral_assigned callback 2023-05-27 16:06:46 +05:30
intel_auxdevice.h soundwire: intel: split auxdevice to different file 2022-11-23 20:11:49 +05:30
intel_bus_common.c soundwire: intel/cadence: update hardware reset sequence 2023-05-29 10:49:47 +05:30
intel_init.c soundwire: intel_init: use eml_lock parameter 2023-05-27 16:06:45 +05:30
intel.c soundwire: intel: read AC timing control register before updating it 2023-05-27 16:08:48 +05:30
intel.h soundwire: intel_ace2x: add debugfs support 2023-05-27 16:06:45 +05:30
Kconfig soundwire: intel_ace2x: fix SND_SOC_SOF_HDA_MLINK dependency 2023-06-21 16:19:44 +05:30
Makefile soundwire: intel_ace2x: add debugfs support 2023-05-27 16:06:45 +05:30
master.c soundwire: master: use pm_runtime_set_active() on add 2020-12-02 12:49:34 +05:30
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 storing port config out-of-bounds 2023-06-21 16:31:44 +05:30
slave.c Char / Misc driver changes for 6.0-rc1 2022-08-04 11:05:48 -07:00
stream.c soundwire: stream: Make master_list ordered to prevent deadlocks 2023-06-21 16:31:45 +05:30
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 2020-11-24 14:08:51 +05:30
sysfs_slave.c soundwire: sysfs: Constify static struct attribute_group 2021-01-19 20:21:20 +05:30