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linux/sound/soc
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Kai Vehmanen 9f2f538cd8 ASoC: SOF: pm: save io region state in case of errors in resume 
[ Upstream commit 171b53be63 ]

If there are failures in DSP runtime resume, the device state will not
reach active and this makes it impossible e.g. to retrieve a possible
DSP panic dump via "exception" debugfs node. If
CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE=y is set, the data in
cache is stale. If debugfs cache is not used, the region simply cannot
be read.

To allow debugging these scenarios, update the debugfs cache contents in
resume error handler. User-space can then later retrieve DSP panic and
other state via debugfs (requires SOF debugfs cache to be enabled in
build).

Reported-by: Curtis Malainey <cujomalainey@chromium.org
Link: https://github.com/thesofproject/linux/issues/4274
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com
Reviewed-by: Curtis Malainey <cujomalainey@chromium.org
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com
Link: https://lore.kernel.org/r/20230512104638.21376-1-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2023-06-09 10:34:13 +02:00
..
adi ASoC: adi: Migrate to new style legacy DAI naming flag 2022-06-27 13:16:34 +01:00
amd ASoC: amd: yc: Add DMI entry to support System76 Pangolin 12 2023-06-09 10:34:10 +02:00
apple ASoC: apple: mca: Improve handling of unavailable DMA channels 2023-03-11 13:55:31 +01:00
atmel ASoC: mchp-spdifrx: Fix uninitialized use of mr in mchp_spdifrx_hw_params() 2023-03-10 09:33:19 +01:00
au1x ASoC: au1x: Migrate to new style legacy DAI naming flag 2022-06-27 13:16:39 +01:00
bcm ASoC: bcm2835-i2s: Switch to use dev_err_probe() helper 2022-09-14 15:06:00 +01:00
cirrus ASoC: ep93xx: Migrate to new style legacy DAI naming flag 2022-06-27 13:16:20 +01:00
codecs ASoC: ssm2602: Add workaround for playback distortions 2023-06-09 10:34:10 +02:00
dwc ASoC: dwc: limit the number of overrun messages 2023-06-09 10:34:10 +02:00
fsl ASoC: fsl_micfil: Fix error handler with pm_runtime_enable 2023-05-24 17:32:43 +01:00
generic ASoC: audio-graph-card: fix refcount leak of cpu_ep in __graph_for_each_link() 2022-12-31 13:33:06 +01:00
hisilicon ASoC: hisilicon: Migrate to new style legacy DAI naming flag 2022-06-27 13:16:24 +01:00
img ASoC: Refactor non_legacy_dai_naming flag 2022-06-29 16:58:08 +01:00
intel ASoC: Intel: soc-acpi-cht: Add quirk for Nextbook Ares 8A tablet 2023-06-09 10:34:07 +02:00
jz4740 ASoC: jz4740-i2s: Handle independent FIFO flush bits 2023-01-07 11:11:51 +01:00
kirkwood ASoC: kirkwood: Iterate over array indexes instead of using pointer math 2023-03-10 09:33:58 +01:00
mediatek ASoC: mediatek: mt8186: Fix use-after-free in driver remove path 2023-05-24 17:32:45 +01:00
meson ASoC: meson: Remove now redundant non_legacy_dai_naming flag 2022-06-27 13:16:48 +01:00
mxs ASoC: mxs-saif: Migrate to new style legacy DAI naming flag 2022-06-27 13:16:43 +01:00
pxa ASoC: pxa: fix null-pointer dereference in filter() 2022-12-31 13:32:11 +01:00
qcom ASoC: qcom: q6prm: fix incorrect clk_root passed to ADSP 2023-03-22 13:34:05 +01:00
rockchip ASoC: rockchip: spdif: Add missing clk_disable_unprepare() in rk_spdif_runtime_resume() 2022-12-31 13:33:07 +01:00
samsung ASoC: soc.h: remove num_cpus/codecs 2022-09-20 12:19:30 +01:00
sh ASoC: rsnd: fixup #endif position 2023-03-10 09:33:19 +01:00
sof ASoC: SOF: pm: save io region state in case of errors in resume 2023-06-09 10:34:13 +02:00
spear ASoC: spear: Migrate to new style legacy DAI naming flag 2022-06-27 13:16:18 +01:00
sprd ASoC: sprd: Use managed buffer allocation 2021-08-04 08:10:27 +02:00
sti ASoC: sti-uniperf: Migrate to new style legacy DAI naming flag 2022-06-27 13:16:29 +01:00
stm ASoC: stm32: i2s: remove irqf_oneshot flag 2022-11-10 17:50:52 +00:00
sunxi ASoC: sunxi: fix declaration compile error 2022-09-21 10:28:19 +01:00
tegra ASoC: tegra: tegra20_das: Drop write-only driver data member 2022-07-05 19:54:00 +01:00
ti ASoC: ti: omap-mcbsp: remove useless assignment 2022-08-31 12:13:05 +01:00
uniphier ASoC: uniphier: Remove now redundant non_legacy_dai_naming flag 2022-06-27 13:16:55 +01:00
ux500 ASoC: ux500: Migrate to new style legacy DAI naming flag 2022-06-27 13:16:41 +01:00
xilinx ASoC: xilinx: Suppress second error message about reset failure in .remove() 2022-07-05 16:44:31 +01:00
xtensa ASoC: xtensa: Migrate to new style legacy DAI naming flag 2022-06-27 13:16:33 +01:00
Kconfig ASoC: apple: mca: Start new platform driver 2022-08-25 13:51:34 +01:00
Makefile ASoC: apple: mca: Start new platform driver 2022-08-25 13:51:34 +01:00
soc-ac97.c ASoC: Variable type completion 2022-08-17 13:00:27 +01:00
soc-acpi.c ALSA: Replace acpi_bus_get_device() 2022-02-01 08:08:08 +01:00
soc-card.c ASoC: Introduce 'fixup_controls' card method 2022-06-10 13:32:20 +01:00
soc-component.c Revert "ASoC: soc-component: using pm_runtime_resume_and_get instead of pm_runtime_get_sync" 2022-10-04 14:09:30 +01:00
soc-compress.c ASoC: soc-compress: Inherit atomicity from DAI link for Compress FE 2023-05-11 23:03:28 +09:00
soc-core.c ASoC: core: Fix use-after-free in snd_soc_exit() 2022-10-28 12:58:04 +01:00
soc-dai.c ASoC: Change handling of unimplemented set_bclk_ratio 2022-08-19 13:19:59 +01:00
soc-dapm.c ASoC: dapm: Don't use prefix for regulator name 2022-10-26 14:17:34 +01:00
soc-devres.c ASoC: core: Remove only the registered component in devm functions 2020-07-07 11:55:46 +01:00
soc-generic-dmaengine-pcm.c ASoC: soc.h: remove num_cpus/codecs 2022-09-20 12:19:30 +01:00
soc-jack.c ASoC: soc-card: Create jack kcontrol without pins 2022-04-14 17:37:21 +01:00
soc-link.c ASoC: soc-pcm: care trigger rollback 2020-12-09 12:13:38 +00:00
soc-ops.c ASoC: ops: Correct bounds check for second channel on SX controls 2022-11-25 16:29:33 +00:00
soc-pcm.c ASoC: soc-pcm: fix hw->formats cleared by soc_pcm_hw_init() for dpcm 2023-05-11 23:02:57 +09:00
soc-topology-test.c ASoC: topology: KUnit: Remove now redundant non_legacy_dai_naming flag 2022-06-27 13:16:54 +01:00
soc-topology.c ASoC: topology: Properly access value coming from topology file 2023-03-10 09:33:18 +01:00
soc-utils-test.c ASoC: soc-utils-test: Add test for snd_soc_params_to_bclk() 2022-08-17 15:19:14 +01:00
soc-utils.c ASoC: soc-utils: Remove __exit for snd_soc_util_exit() 2022-11-07 13:37:04 +00:00