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,
Oleksij Rempel <linux@rempel-privat.de>,
Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH v3 16/23] counter: interrupt-cnt: Convert to new counter registration
Date: Wed, 29 Dec 2021 16:44:34 +0100 [thread overview]
Message-ID: <20211229154441.38045-17-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: a55ebd47f21f ("counter: add IRQ or GPIO based counter")
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/interrupt-cnt.c | 28 ++++++++++++++++------------
1 file changed, 16 insertions(+), 12 deletions(-)
diff --git a/drivers/counter/interrupt-cnt.c b/drivers/counter/interrupt-cnt.c
index 4bf706ef46e2..9e99702470c2 100644
--- a/drivers/counter/interrupt-cnt.c
+++ b/drivers/counter/interrupt-cnt.c
@@ -16,7 +16,6 @@
struct interrupt_cnt_priv {
atomic_t count;
- struct counter_device counter;
struct gpio_desc *gpio;
int irq;
bool enabled;
@@ -148,12 +147,14 @@ static const struct counter_ops interrupt_cnt_ops = {
static int interrupt_cnt_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
+ struct counter_device *counter;
struct interrupt_cnt_priv *priv;
int ret;
- priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
+ counter = devm_counter_alloc(dev, sizeof(*priv));
+ if (!counter)
return -ENOMEM;
+ priv = counter_priv(counter);
priv->irq = platform_get_irq_optional(pdev, 0);
if (priv->irq == -ENXIO)
@@ -184,8 +185,8 @@ static int interrupt_cnt_probe(struct platform_device *pdev)
if (!priv->signals.name)
return -ENOMEM;
- priv->counter.signals = &priv->signals;
- priv->counter.num_signals = 1;
+ counter->signals = &priv->signals;
+ counter->num_signals = 1;
priv->synapses.actions_list = interrupt_cnt_synapse_actions;
priv->synapses.num_actions = ARRAY_SIZE(interrupt_cnt_synapse_actions);
@@ -199,12 +200,11 @@ static int interrupt_cnt_probe(struct platform_device *pdev)
priv->cnts.ext = interrupt_cnt_ext;
priv->cnts.num_ext = ARRAY_SIZE(interrupt_cnt_ext);
- priv->counter.priv = priv;
- priv->counter.name = dev_name(dev);
- priv->counter.parent = dev;
- priv->counter.ops = &interrupt_cnt_ops;
- priv->counter.counts = &priv->cnts;
- priv->counter.num_counts = 1;
+ counter->name = dev_name(dev);
+ counter->parent = dev;
+ counter->ops = &interrupt_cnt_ops;
+ counter->counts = &priv->cnts;
+ counter->num_counts = 1;
irq_set_status_flags(priv->irq, IRQ_NOAUTOEN);
ret = devm_request_irq(dev, priv->irq, interrupt_cnt_isr,
@@ -213,7 +213,11 @@ static int interrupt_cnt_probe(struct platform_device *pdev)
if (ret)
return ret;
- return devm_counter_register(dev, &priv->counter);
+ ret = devm_counter_add(dev, counter);
+ if (ret < 0)
+ return dev_err_probe(dev, ret, "Failed to add counter\n");
+
+ return 0;
}
static const struct of_device_id interrupt_cnt_of_match[] = {
--
2.34.1
next prev parent reply other threads:[~2021-12-29 15:45 UTC|newest]
Thread overview: 39+ 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 ` [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 ` [PATCH v3 12/23] counter: stm32-timer-cnt: " 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 ` Uwe Kleine-König [this message]
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 ` [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 12:31 ` Greg Kroah-Hartman
2021-12-30 14:58 ` Jonathan Cameron
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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