From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krzysztof Kozlowski Subject: Re: [PATCH v1 8/9] ASoC: samsung: arndale: Add missing OF node dereferencing Date: Thu, 19 Sep 2019 10:22:11 +0200 Message-ID: <20190919082211.GF13195@pi3> References: <20190918104634.15216-1-s.nawrocki@samsung.com> <20190918104634.15216-9-s.nawrocki@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20190918104634.15216-9-s.nawrocki@samsung.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Sylwester Nawrocki Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org, linux-samsung-soc@vger.kernel.org, ckeepax@opensource.cirrus.com, b.zolnierkie@samsung.com, sbkim73@samsung.com, patches@opensource.cirrus.com, lgirdwood@gmail.com, robh+dt@kernel.org, broonie@kernel.org, linux-arm-kernel@lists.infradead.org, m.szyprowski@samsung.com List-Id: devicetree@vger.kernel.org On Wed, Sep 18, 2019 at 12:46:33PM +0200, Sylwester Nawrocki wrote: > Ensure there is no OF node references kept when the driver is removed/unbound. > > Signed-off-by: Sylwester Nawrocki > --- > sound/soc/samsung/arndale_rt5631.c | 31 ++++++++++++++++++++++++++++-- > 1 file changed, 29 insertions(+), 2 deletions(-) Wasn't this issue introduced in 5/9? It looks weird to fix it here... Best regards, Krzysztof > > diff --git a/sound/soc/samsung/arndale_rt5631.c b/sound/soc/samsung/arndale_rt5631.c > index 3744c47742b8..d8da313e898a 100644 > --- a/sound/soc/samsung/arndale_rt5631.c > +++ b/sound/soc/samsung/arndale_rt5631.c > @@ -132,6 +132,17 @@ static struct snd_soc_card arndale_wm1811 = { > .num_links = ARRAY_SIZE(arndale_wm1811_dai), > }; > > +static void arndale_put_of_nodes(struct snd_soc_card *card) > +{ > + struct snd_soc_dai_link *dai_link; > + int i; > + > + for_each_card_prelinks(card, i, dai_link) { > + of_node_put(dai_link->cpus->of_node); > + of_node_put(dai_link->codecs->of_node); > + } > +} > + > static int arndale_audio_probe(struct platform_device *pdev) > { > struct device_node *np = pdev->dev.of_node; > @@ -156,16 +167,31 @@ static int arndale_audio_probe(struct platform_device *pdev) > if (!dai_link->codecs->of_node) { > dev_err(&pdev->dev, > "Property 'samsung,audio-codec' missing or invalid\n"); > - return -EINVAL; > + ret = -EINVAL; > + goto err_put_of_nodes; > } > > ret = devm_snd_soc_register_card(card->dev, card); > - if (ret) > + if (ret) { > dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret); > + goto err_put_of_nodes; > + } > > + return 0; > + > +err_put_of_nodes: > + arndale_put_of_nodes(card); > return ret; > } > > +static int arndale_audio_remove(struct platform_device *pdev) > +{ > + struct snd_soc_card *card = platform_get_drvdata(pdev); > + > + arndale_put_of_nodes(card); > + return 0; > +} > + > static const struct of_device_id arndale_audio_of_match[] __maybe_unused = { > { .compatible = "samsung,arndale-rt5631", .data = &arndale_rt5631 }, > { .compatible = "samsung,arndale-alc5631", .data = &arndale_rt5631 }, > @@ -181,6 +207,7 @@ static struct platform_driver arndale_audio_driver = { > .of_match_table = arndale_audio_of_match, > }, > .probe = arndale_audio_probe, > + .remove = arndale_audio_remove, > }; > > module_platform_driver(arndale_audio_driver); > -- > 2.17.1 >