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,
Jarkko Nikula <jarkko.nikula@linux.intel.com>
Subject: [PATCH v3 17/23] counter: intel-qep: Convert to new counter registration
Date: Wed, 29 Dec 2021 16:44:35 +0100 [thread overview]
Message-ID: <20211229154441.38045-18-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: b711f687a1c1 ("counter: Add support for Intel Quadrature Encoder Peripheral")
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/intel-qep.c | 28 ++++++++++++++++------------
1 file changed, 16 insertions(+), 12 deletions(-)
diff --git a/drivers/counter/intel-qep.c b/drivers/counter/intel-qep.c
index 8f84a48508ac..47a6a9dfc9e8 100644
--- a/drivers/counter/intel-qep.c
+++ b/drivers/counter/intel-qep.c
@@ -63,7 +63,6 @@
#define INTEL_QEP_CLK_PERIOD_NS 10
struct intel_qep {
- struct counter_device counter;
struct mutex lock;
struct device *dev;
void __iomem *regs;
@@ -392,14 +391,16 @@ static struct counter_count intel_qep_counter_count[] = {
static int intel_qep_probe(struct pci_dev *pci, const struct pci_device_id *id)
{
+ struct counter_device *counter;
struct intel_qep *qep;
struct device *dev = &pci->dev;
void __iomem *regs;
int ret;
- qep = devm_kzalloc(dev, sizeof(*qep), GFP_KERNEL);
- if (!qep)
+ counter = devm_counter_alloc(dev, sizeof(*qep));
+ if (!counter)
return -ENOMEM;
+ qep = counter_priv(counter);
ret = pcim_enable_device(pci);
if (ret)
@@ -422,20 +423,23 @@ static int intel_qep_probe(struct pci_dev *pci, const struct pci_device_id *id)
intel_qep_init(qep);
pci_set_drvdata(pci, qep);
- qep->counter.name = pci_name(pci);
- qep->counter.parent = dev;
- qep->counter.ops = &intel_qep_counter_ops;
- qep->counter.counts = intel_qep_counter_count;
- qep->counter.num_counts = ARRAY_SIZE(intel_qep_counter_count);
- qep->counter.signals = intel_qep_signals;
- qep->counter.num_signals = ARRAY_SIZE(intel_qep_signals);
- qep->counter.priv = qep;
+ counter->name = pci_name(pci);
+ counter->parent = dev;
+ counter->ops = &intel_qep_counter_ops;
+ counter->counts = intel_qep_counter_count;
+ counter->num_counts = ARRAY_SIZE(intel_qep_counter_count);
+ counter->signals = intel_qep_signals;
+ counter->num_signals = ARRAY_SIZE(intel_qep_signals);
qep->enabled = false;
pm_runtime_put(dev);
pm_runtime_allow(dev);
- return devm_counter_register(&pci->dev, &qep->counter);
+ ret = devm_counter_add(&pci->dev, counter);
+ if (ret < 0)
+ return dev_err_probe(&pci->dev, ret, "Failed to add counter\n");
+
+ return 0;
}
static void intel_qep_remove(struct pci_dev *pci)
--
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 ` [PATCH v3 16/23] counter: interrupt-cnt: " Uwe Kleine-König
2021-12-29 15:44 ` Uwe Kleine-König [this message]
2021-12-30 10:26 ` [PATCH v3 17/23] counter: intel-qep: " 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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