From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de> To: William Breathitt Gray <vilhelm.gray@gmail.com> Cc: linux-iio@vger.kernel.org, kernel@pengutronix.de, Jonathan Cameron <Jonathan.Cameron@huawei.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, linux-kernel@vger.kernel.org, Fabrice Gasnier <fabrice.gasnier@foss.st.com>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre Torgue <alexandre.torgue@foss.st.com>, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 21/23] counter: stm32-lptimer-cnt: Convert to new counter registration Date: Wed, 29 Dec 2021 16:44:39 +0100 [thread overview] Message-ID: <20211229154441.38045-22-u.kleine-koenig@pengutronix.de> (raw) In-Reply-To: <20211229154441.38045-1-u.kleine-koenig@pengutronix.de> This fixes device lifetime issues where it was possible to free a live struct device. Fixes: 597f55e3f36c ("counter: stm32-lptimer: add counter device") Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- drivers/counter/stm32-lptimer-cnt.c | 33 +++++++++++++++++------------ 1 file changed, 19 insertions(+), 14 deletions(-) diff --git a/drivers/counter/stm32-lptimer-cnt.c b/drivers/counter/stm32-lptimer-cnt.c index 9cf00e929cc0..68031d93ce89 100644 --- a/drivers/counter/stm32-lptimer-cnt.c +++ b/drivers/counter/stm32-lptimer-cnt.c @@ -20,7 +20,6 @@ #include <linux/types.h> struct stm32_lptim_cnt { - struct counter_device counter; struct device *dev; struct regmap *regmap; struct clk *clk; @@ -411,14 +410,17 @@ static struct counter_count stm32_lptim_in1_counts = { static int stm32_lptim_cnt_probe(struct platform_device *pdev) { struct stm32_lptimer *ddata = dev_get_drvdata(pdev->dev.parent); + struct counter_device *counter; struct stm32_lptim_cnt *priv; + int ret; if (IS_ERR_OR_NULL(ddata)) return -EINVAL; - priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); - if (!priv) + counter = devm_counter_alloc(&pdev->dev, sizeof(*priv)); + if (!counter) return -ENOMEM; + priv = counter_priv(counter); priv->dev = &pdev->dev; priv->regmap = ddata->regmap; @@ -426,23 +428,26 @@ static int stm32_lptim_cnt_probe(struct platform_device *pdev) priv->ceiling = STM32_LPTIM_MAX_ARR; /* Initialize Counter device */ - priv->counter.name = dev_name(&pdev->dev); - priv->counter.parent = &pdev->dev; - priv->counter.ops = &stm32_lptim_cnt_ops; + counter->name = dev_name(&pdev->dev); + counter->parent = &pdev->dev; + counter->ops = &stm32_lptim_cnt_ops; if (ddata->has_encoder) { - priv->counter.counts = &stm32_lptim_enc_counts; - priv->counter.num_signals = ARRAY_SIZE(stm32_lptim_cnt_signals); + counter->counts = &stm32_lptim_enc_counts; + counter->num_signals = ARRAY_SIZE(stm32_lptim_cnt_signals); } else { - priv->counter.counts = &stm32_lptim_in1_counts; - priv->counter.num_signals = 1; + counter->counts = &stm32_lptim_in1_counts; + counter->num_signals = 1; } - priv->counter.num_counts = 1; - priv->counter.signals = stm32_lptim_cnt_signals; - priv->counter.priv = priv; + counter->num_counts = 1; + counter->signals = stm32_lptim_cnt_signals; platform_set_drvdata(pdev, priv); - return devm_counter_register(&pdev->dev, &priv->counter); + ret = devm_counter_add(&pdev->dev, counter); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, "Failed to add counter\n"); + + return 0; } #ifdef CONFIG_PM_SLEEP -- 2.34.1
WARNING: multiple messages have this Message-ID (diff)
From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de> To: William Breathitt Gray <vilhelm.gray@gmail.com> Cc: linux-iio@vger.kernel.org, kernel@pengutronix.de, Jonathan Cameron <Jonathan.Cameron@huawei.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, linux-kernel@vger.kernel.org, Fabrice Gasnier <fabrice.gasnier@foss.st.com>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre Torgue <alexandre.torgue@foss.st.com>, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 21/23] counter: stm32-lptimer-cnt: Convert to new counter registration Date: Wed, 29 Dec 2021 16:44:39 +0100 [thread overview] Message-ID: <20211229154441.38045-22-u.kleine-koenig@pengutronix.de> (raw) In-Reply-To: <20211229154441.38045-1-u.kleine-koenig@pengutronix.de> This fixes device lifetime issues where it was possible to free a live struct device. Fixes: 597f55e3f36c ("counter: stm32-lptimer: add counter device") Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- drivers/counter/stm32-lptimer-cnt.c | 33 +++++++++++++++++------------ 1 file changed, 19 insertions(+), 14 deletions(-) diff --git a/drivers/counter/stm32-lptimer-cnt.c b/drivers/counter/stm32-lptimer-cnt.c index 9cf00e929cc0..68031d93ce89 100644 --- a/drivers/counter/stm32-lptimer-cnt.c +++ b/drivers/counter/stm32-lptimer-cnt.c @@ -20,7 +20,6 @@ #include <linux/types.h> struct stm32_lptim_cnt { - struct counter_device counter; struct device *dev; struct regmap *regmap; struct clk *clk; @@ -411,14 +410,17 @@ static struct counter_count stm32_lptim_in1_counts = { static int stm32_lptim_cnt_probe(struct platform_device *pdev) { struct stm32_lptimer *ddata = dev_get_drvdata(pdev->dev.parent); + struct counter_device *counter; struct stm32_lptim_cnt *priv; + int ret; if (IS_ERR_OR_NULL(ddata)) return -EINVAL; - priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); - if (!priv) + counter = devm_counter_alloc(&pdev->dev, sizeof(*priv)); + if (!counter) return -ENOMEM; + priv = counter_priv(counter); priv->dev = &pdev->dev; priv->regmap = ddata->regmap; @@ -426,23 +428,26 @@ static int stm32_lptim_cnt_probe(struct platform_device *pdev) priv->ceiling = STM32_LPTIM_MAX_ARR; /* Initialize Counter device */ - priv->counter.name = dev_name(&pdev->dev); - priv->counter.parent = &pdev->dev; - priv->counter.ops = &stm32_lptim_cnt_ops; + counter->name = dev_name(&pdev->dev); + counter->parent = &pdev->dev; + counter->ops = &stm32_lptim_cnt_ops; if (ddata->has_encoder) { - priv->counter.counts = &stm32_lptim_enc_counts; - priv->counter.num_signals = ARRAY_SIZE(stm32_lptim_cnt_signals); + counter->counts = &stm32_lptim_enc_counts; + counter->num_signals = ARRAY_SIZE(stm32_lptim_cnt_signals); } else { - priv->counter.counts = &stm32_lptim_in1_counts; - priv->counter.num_signals = 1; + counter->counts = &stm32_lptim_in1_counts; + counter->num_signals = 1; } - priv->counter.num_counts = 1; - priv->counter.signals = stm32_lptim_cnt_signals; - priv->counter.priv = priv; + counter->num_counts = 1; + counter->signals = stm32_lptim_cnt_signals; platform_set_drvdata(pdev, priv); - return devm_counter_register(&pdev->dev, &priv->counter); + ret = devm_counter_add(&pdev->dev, counter); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, "Failed to add counter\n"); + + return 0; } #ifdef CONFIG_PM_SLEEP -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-12-29 15:45 UTC|newest] Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-29 15:44 [PATCH v3 00/23] counter: cleanups and device lifetime fixes Uwe Kleine-König 2021-12-29 15:44 ` Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 01/23] counter: Use container_of instead of drvdata to track counter_device Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 02/23] counter: ftm-quaddec: Drop unused platform_set_drvdata() Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 03/23] counter: microchip-tcb-capture: " Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 04/23] counter: Provide a wrapper to access device private data Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 05/23] counter: 104-quad-8: Convert to counter_priv() wrapper Uwe Kleine-König 2021-12-30 13:19 ` Greg Kroah-Hartman 2021-12-29 15:44 ` [PATCH v3 06/23] counter: interrupt-cnt: " Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 07/23] counter: microchip-tcb-capture: " Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 08/23] counter: intel-qep: " Uwe Kleine-König 2021-12-30 10:26 ` Jarkko Nikula 2021-12-29 15:44 ` [PATCH v3 09/23] counter: ftm-quaddec: " Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 10/23] counter: ti-eqep: " Uwe Kleine-König 2021-12-29 22:42 ` William Breathitt Gray 2021-12-29 22:56 ` David Lechner 2021-12-29 15:44 ` [PATCH v3 11/23] counter: stm32-lptimer-cnt: " Uwe Kleine-König 2021-12-29 15:44 ` Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 12/23] counter: stm32-timer-cnt: " Uwe Kleine-König 2021-12-29 15:44 ` Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 13/23] counter: Provide alternative counter registration functions Uwe Kleine-König 2021-12-29 17:06 ` Jonathan Cameron 2021-12-30 8:38 ` Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 14/23] counter: Update documentation for new " Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 15/23] counter: 104-quad-8: Convert to new counter registration Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 16/23] counter: interrupt-cnt: " Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 17/23] counter: intel-qep: " Uwe Kleine-König 2021-12-30 10:26 ` Jarkko Nikula 2021-12-29 15:44 ` [PATCH v3 18/23] counter: ftm-quaddec: " Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 19/23] counter: microchip-tcb-capture: " Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 20/23] counter: stm32-timer-cnt: " Uwe Kleine-König 2021-12-29 15:44 ` Uwe Kleine-König 2021-12-29 15:44 ` Uwe Kleine-König [this message] 2021-12-29 15:44 ` [PATCH v3 21/23] counter: stm32-lptimer-cnt: " Uwe Kleine-König 2021-12-29 15:44 ` [PATCH v3 22/23] counter: ti-eqep: " Uwe Kleine-König 2021-12-29 22:56 ` David Lechner 2021-12-29 15:44 ` [PATCH v3 23/23] counter: remove old and now unused registration API Uwe Kleine-König 2021-12-30 8:53 ` [PATCH v3 00/23] counter: cleanups and device lifetime fixes Uwe Kleine-König 2021-12-30 8:53 ` Uwe Kleine-König 2021-12-30 12:31 ` Greg Kroah-Hartman 2021-12-30 12:31 ` Greg Kroah-Hartman 2021-12-30 14:58 ` Jonathan Cameron 2021-12-30 14:58 ` Jonathan Cameron 2021-12-30 15:08 ` Uwe Kleine-König 2021-12-30 15:08 ` Uwe Kleine-König 2022-01-05 12:26 ` William Breathitt Gray 2022-01-06 15:13 ` Uwe Kleine-König 2022-01-11 9:56 ` Jarkko Nikula
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