From: Johan Hovold Date: Mon, 24 Nov 2025 10:49:05 +0000 (+0100) Subject: ASoC: stm32: sai: fix device leak on probe X-Git-Tag: v5.15.198~182 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=938117827bcabcccec6bd4c1e5dde73d4c632878;p=thirdparty%2Fkernel%2Fstable.git ASoC: stm32: sai: fix device leak on probe commit e26ff429eaf10c4ef1bc3dabd9bf27eb54b7e1f4 upstream. Make sure to drop the reference taken when looking up the sync provider device and its driver data during DAI probe on probe failures and on unbind. Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference. Fixes: 7dd0d835582f ("ASoC: stm32: sai: simplify sync modes management") Fixes: 1c3816a19487 ("ASoC: stm32: sai: add missing put_device()") Cc: stable@vger.kernel.org # 4.16: 1c3816a19487 Cc: olivier moysan Cc: Wen Yang Signed-off-by: Johan Hovold Reviewed-by: olivier moysan Link: https://patch.msgid.link/20251124104908.15754-2-johan@kernel.org Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman --- diff --git a/sound/soc/stm/stm32_sai.c b/sound/soc/stm/stm32_sai.c index 058757c721f0a..bf691cc3f5b25 100644 --- a/sound/soc/stm/stm32_sai.c +++ b/sound/soc/stm/stm32_sai.c @@ -127,6 +127,7 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client, } sai_provider = platform_get_drvdata(pdev); + put_device(&pdev->dev); if (!sai_provider) { dev_err(&sai_client->pdev->dev, "SAI sync provider data not found\n"); @@ -143,7 +144,6 @@ static int stm32_sai_set_sync(struct stm32_sai_data *sai_client, ret = stm32_sai_sync_conf_provider(sai_provider, synco); error: - put_device(&pdev->dev); of_node_put(np_provider); return ret; }