From: Jonathan Cameron <jic23@kernel.org>
To: linux-iio@vger.kernel.org
Cc: Barry Song <song.bao.hua@hisilicon.com>,
Jonathan Cameron <Jonathan.Cameron@huawei.com>,
Lars-Peter Clausen <lars@metafoo.de>
Subject: [PATCH 1/7] iio:adc:ad7766: Use new IRQF_NO_AUTOEN to reduce boilerplate
Date: Fri, 2 Apr 2021 19:45:38 +0100 [thread overview]
Message-ID: <20210402184544.488862-2-jic23@kernel.org> (raw)
In-Reply-To: <20210402184544.488862-1-jic23@kernel.org>
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
As iio_poll_trigger() is safe against spurious interrupts when the
trigger is not enabled, this is not a fix despite looking like
a race. It is nice to simplify the code however so the interrupt
is never enabled in the first place.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
---
drivers/iio/adc/ad7766.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/iio/adc/ad7766.c b/drivers/iio/adc/ad7766.c
index 829a3426f235..1e41759f3ee5 100644
--- a/drivers/iio/adc/ad7766.c
+++ b/drivers/iio/adc/ad7766.c
@@ -255,18 +255,17 @@ static int ad7766_probe(struct spi_device *spi)
ad7766->trig->ops = &ad7766_trigger_ops;
iio_trigger_set_drvdata(ad7766->trig, ad7766);
- ret = devm_request_irq(&spi->dev, spi->irq, ad7766_irq,
- IRQF_TRIGGER_FALLING, dev_name(&spi->dev),
- ad7766->trig);
- if (ret < 0)
- return ret;
-
/*
* The device generates interrupts as long as it is powered up.
* Some platforms might not allow the option to power it down so
- * disable the interrupt to avoid extra load on the system
+ * don't enable the interrupt to avoid extra load on the system
*/
- disable_irq(spi->irq);
+ ret = devm_request_irq(&spi->dev, spi->irq, ad7766_irq,
+ IRQF_TRIGGER_FALLING | IRQF_NO_AUTOEN,
+ dev_name(&spi->dev),
+ ad7766->trig);
+ if (ret < 0)
+ return ret;
ret = devm_iio_trigger_register(&spi->dev, ad7766->trig);
if (ret)
--
2.31.1
next prev parent reply other threads:[~2021-04-02 18:47 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-02 18:45 [PATCH 0/7] iio: Use IRQF_NO_AUTOEN Jonathan Cameron
2021-04-02 18:45 ` Jonathan Cameron [this message]
2021-04-02 20:10 ` [PATCH 1/7] iio:adc:ad7766: Use new IRQF_NO_AUTOEN to reduce boilerplate Song Bao Hua (Barry Song)
2021-04-05 14:27 ` Jonathan Cameron
2021-04-02 18:45 ` [PATCH 2/7] iio:adc:exynos-adc: Use new IRQF_NO_AUTOEN flag rather than separate irq_disable() Jonathan Cameron
2021-04-02 20:11 ` Song Bao Hua (Barry Song)
2021-04-04 19:20 ` Krzysztof Kozlowski
2021-04-05 14:29 ` Jonathan Cameron
2021-04-02 18:45 ` [PATCH 3/7] iio:adc:nau7802: Use IRQF_NO_AUTOEN instead of request then disable Jonathan Cameron
2021-04-02 20:12 ` Song Bao Hua (Barry Song)
2021-04-05 14:33 ` Jonathan Cameron
2021-04-02 18:45 ` [PATCH 4/7] iio:adc:sun4i-gpadc: Use new IRQF_NO_AUTOEN flag " Jonathan Cameron
2021-04-02 20:13 ` Song Bao Hua (Barry Song)
2021-04-05 14:35 ` Jonathan Cameron
2021-04-02 18:45 ` [PATCH 5/7] iio:chemical:scd30: Use IRQF_NO_AUTOEN to avoid irq " Jonathan Cameron
2021-04-02 20:14 ` Song Bao Hua (Barry Song)
2021-04-05 14:36 ` Jonathan Cameron
2021-04-02 18:45 ` [PATCH 6/7] iio:imu:adis: Use IRQF_NO_AUTOEN instead of " Jonathan Cameron
2021-04-02 20:37 ` Song Bao Hua (Barry Song)
2021-04-05 14:40 ` Jonathan Cameron
2021-04-06 11:48 ` Sa, Nuno
2021-04-02 18:45 ` [PATCH 7/7] iio:adc:ad_sigma_delta: Use IRQF_NO_AUTOEN rather than request and disable Jonathan Cameron
2021-04-02 20:30 ` Song Bao Hua (Barry Song)
2021-04-05 14:51 ` Jonathan Cameron
2021-04-05 22:56 ` Song Bao Hua (Barry Song)
2021-04-02 19:00 ` [PATCH 0/7] iio: Use IRQF_NO_AUTOEN Andy Shevchenko
2021-04-03 11:45 ` Lars-Peter Clausen
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