| Message ID | 20240213114729.7055-1-peter.ujfalusi@linux.intel.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | b30289e7fa927f921bfb4d0d04727461706ae822 |
| Headers | show |
| Series | ASoC: SOF: Fix runtime pm usage counter balance after fw exception | expand |
On Tue, 13 Feb 2024 13:47:29 +0200, Peter Ujfalusi wrote: > If the retain context is enabled we will unconditionally increment the > device's pm use count on each exception and when the drivers are unloaded > we do not correct this (as we don't know how many times we 'prevented > d3 entry'). > Introduce a flag to make sure that we do not increment the use count more > than once and on module unload decrement the use count if needed to > balance it. > > [...] Applied to https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next Thanks! [1/1] ASoC: SOF: Fix runtime pm usage counter balance after fw exception commit: b30289e7fa927f921bfb4d0d04727461706ae822 All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark
diff --git a/sound/soc/sof/core.c b/sound/soc/sof/core.c index 425b023b03b4..9b00ede2a486 100644 --- a/sound/soc/sof/core.c +++ b/sound/soc/sof/core.c @@ -679,6 +679,16 @@ int snd_sof_device_remove(struct device *dev) */ snd_sof_machine_unregister(sdev, pdata); + /* + * Balance the runtime pm usage count in case we are faced with an + * exception and we forcably prevented D3 power state to preserve + * context + */ + if (sdev->d3_prevented) { + sdev->d3_prevented = false; + pm_runtime_put_noidle(sdev->dev); + } + if (sdev->fw_state > SOF_FW_BOOT_NOT_STARTED) { sof_fw_trace_free(sdev); ret = snd_sof_dsp_power_down_notify(sdev); diff --git a/sound/soc/sof/debug.c b/sound/soc/sof/debug.c index d547318e0d32..7c8aafca8fde 100644 --- a/sound/soc/sof/debug.c +++ b/sound/soc/sof/debug.c @@ -433,13 +433,15 @@ static void snd_sof_ipc_dump(struct snd_sof_dev *sdev) void snd_sof_handle_fw_exception(struct snd_sof_dev *sdev, const char *msg) { - if (IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_RETAIN_DSP_CONTEXT) || - sof_debug_check_flag(SOF_DBG_RETAIN_CTX)) { + if ((IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_RETAIN_DSP_CONTEXT) || + sof_debug_check_flag(SOF_DBG_RETAIN_CTX)) && !sdev->d3_prevented) { /* should we prevent DSP entering D3 ? */ if (!sdev->ipc_dump_printed) dev_info(sdev->dev, "Attempting to prevent DSP from entering D3 state to preserve context\n"); - pm_runtime_get_if_in_use(sdev->dev); + + if (pm_runtime_get_if_in_use(sdev->dev) == 1) + sdev->d3_prevented = true; } /* dump vital information to the logs */ diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index 6d7897bf9607..5755c997a9de 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -595,6 +595,7 @@ struct snd_sof_dev { struct list_head dfsentry_list; bool dbg_dump_printed; bool ipc_dump_printed; + bool d3_prevented; /* runtime pm use count incremented to prevent context lost */ /* firmware loader */ struct sof_ipc_fw_ready fw_ready;