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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2021-12-30 16:02:55 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-30 17:44:07 +0100 |
| commit | b5d6547c8e545269caca7eadc9c490e1201673cf (patch) | |
| tree | bd596ca7d75c77eb3361760609c30743eedd9e85 /drivers/counter | |
| parent | e99dec87a9d6890e9cfb806be07e692a6decb92f (diff) | |
| download | lwn-b5d6547c8e545269caca7eadc9c490e1201673cf.tar.gz lwn-b5d6547c8e545269caca7eadc9c490e1201673cf.zip | |
counter: ftm-quaddec: Convert to new counter registration
This fixes device lifetime issues where it was possible to free a live
struct device.
Fixes: a3b9a99980d9 ("counter: add FlexTimer Module Quadrature decoder counter driver")
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>
Link: https://lore.kernel.org/r/20211230150300.72196-19-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/counter')
| -rw-r--r-- | drivers/counter/ftm-quaddec.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/counter/ftm-quaddec.c b/drivers/counter/ftm-quaddec.c index f5d92df6a611..2a58582a9df4 100644 --- a/drivers/counter/ftm-quaddec.c +++ b/drivers/counter/ftm-quaddec.c @@ -26,7 +26,6 @@ }) struct ftm_quaddec { - struct counter_device counter; struct platform_device *pdev; void __iomem *ftm_base; bool big_endian; @@ -259,15 +258,17 @@ static struct counter_count ftm_quaddec_counts = { static int ftm_quaddec_probe(struct platform_device *pdev) { + struct counter_device *counter; struct ftm_quaddec *ftm; struct device_node *node = pdev->dev.of_node; struct resource *io; int ret; - ftm = devm_kzalloc(&pdev->dev, sizeof(*ftm), GFP_KERNEL); - if (!ftm) + counter = devm_counter_alloc(&pdev->dev, sizeof(*ftm)); + if (!counter) return -ENOMEM; + ftm = counter_priv(counter); io = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!io) { @@ -283,14 +284,13 @@ static int ftm_quaddec_probe(struct platform_device *pdev) dev_err(&pdev->dev, "Failed to map memory region\n"); return -EINVAL; } - ftm->counter.name = dev_name(&pdev->dev); - ftm->counter.parent = &pdev->dev; - ftm->counter.ops = &ftm_quaddec_cnt_ops; - ftm->counter.counts = &ftm_quaddec_counts; - ftm->counter.num_counts = 1; - ftm->counter.signals = ftm_quaddec_signals; - ftm->counter.num_signals = ARRAY_SIZE(ftm_quaddec_signals); - ftm->counter.priv = ftm; + counter->name = dev_name(&pdev->dev); + counter->parent = &pdev->dev; + counter->ops = &ftm_quaddec_cnt_ops; + counter->counts = &ftm_quaddec_counts; + counter->num_counts = 1; + counter->signals = ftm_quaddec_signals; + counter->num_signals = ARRAY_SIZE(ftm_quaddec_signals); mutex_init(&ftm->ftm_quaddec_mutex); @@ -300,9 +300,9 @@ static int ftm_quaddec_probe(struct platform_device *pdev) if (ret) return ret; - ret = devm_counter_register(&pdev->dev, &ftm->counter); + ret = devm_counter_add(&pdev->dev, counter); if (ret) - return ret; + return dev_err_probe(&pdev->dev, ret, "Failed to add counter\n"); return 0; } |