6.1-stable review patch. If anyone has any objections, please let me know.
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From: Johan Hovold johan@kernel.org
[ Upstream commit 312ec2f0d9d1a5656f76d770bbf1d967e9289aa7 ]
Make sure to unprepare the parent clock also on probe failures (e.g. probe deferral).
Fixes: a14bf98c045b ("ASoC: stm32: sai: fix possible circular locking") Cc: stable@vger.kernel.org # 5.5 Cc: Olivier Moysan olivier.moysan@st.com Signed-off-by: Johan Hovold johan@kernel.org Reviewed-by: olivier moysan olivier.moysan@foss.st.com Link: https://patch.msgid.link/20251124104908.15754-3-johan@kernel.org Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- sound/soc/stm/stm32_sai_sub.c | 28 +++++++++++++++++++++------- 1 file changed, 21 insertions(+), 7 deletions(-)
--- a/sound/soc/stm/stm32_sai_sub.c +++ b/sound/soc/stm/stm32_sai_sub.c @@ -1483,14 +1483,21 @@ static int stm32_sai_sub_parse_of(struct if (of_find_property(np, "#clock-cells", NULL)) { ret = stm32_sai_add_mclk_provider(sai); if (ret < 0) - return ret; + goto err_unprepare_pclk; } else { sai->sai_mclk = devm_clk_get_optional(&pdev->dev, "MCLK"); - if (IS_ERR(sai->sai_mclk)) - return PTR_ERR(sai->sai_mclk); + if (IS_ERR(sai->sai_mclk)) { + ret = PTR_ERR(sai->sai_mclk); + goto err_unprepare_pclk; + } }
return 0; + +err_unprepare_pclk: + clk_unprepare(sai->pdata->pclk); + + return ret; }
static int stm32_sai_sub_probe(struct platform_device *pdev) @@ -1534,26 +1541,33 @@ static int stm32_sai_sub_probe(struct pl IRQF_SHARED, dev_name(&pdev->dev), sai); if (ret) { dev_err(&pdev->dev, "IRQ request returned %d\n", ret); - return ret; + goto err_unprepare_pclk; }
if (STM_SAI_PROTOCOL_IS_SPDIF(sai)) conf = &stm32_sai_pcm_config_spdif;
ret = snd_dmaengine_pcm_register(&pdev->dev, conf, 0); - if (ret) - return dev_err_probe(&pdev->dev, ret, "Could not register pcm dma\n"); + if (ret) { + ret = dev_err_probe(&pdev->dev, ret, "Could not register pcm dma\n"); + goto err_unprepare_pclk; + }
ret = snd_soc_register_component(&pdev->dev, &stm32_component, &sai->cpu_dai_drv, 1); if (ret) { snd_dmaengine_pcm_unregister(&pdev->dev); - return ret; + goto err_unprepare_pclk; }
pm_runtime_enable(&pdev->dev);
return 0; + +err_unprepare_pclk: + clk_unprepare(sai->pdata->pclk); + + return ret; }
static int stm32_sai_sub_remove(struct platform_device *pdev)