From: Jonathan Cameron <jic23@kernel.org>
To: Alexandru Ardelean <alexandru.ardelean@analog.com>
Cc: <linux-iio@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<nuno.sa@analog.com>
Subject: Re: [PATCH v2 4/9] iio: imu: adis: add unlocked __adis_initial_startup()
Date: Fri, 14 Feb 2020 14:31:37 +0000 [thread overview]
Message-ID: <20200214143137.72e995b3@archlinux> (raw)
In-Reply-To: <20200210132606.9315-4-alexandru.ardelean@analog.com>
On Mon, 10 Feb 2020 15:26:01 +0200
Alexandru Ardelean <alexandru.ardelean@analog.com> wrote:
> This change splits the __adis_initial_startup() away from
> adis_initial_startup(). The unlocked version can be used in certain calls
> during probe, where races won't happen since the ADIS driver may not be
> registered yet with IIO.
>
> Signed-off-by: Nuno Sá <nuno.sa@analog.com>
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Applied. Thanks,
Jonathan
> ---
> drivers/iio/imu/adis.c | 14 ++++----------
> include/linux/iio/imu/adis.h | 13 ++++++++++++-
> 2 files changed, 16 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/iio/imu/adis.c b/drivers/iio/imu/adis.c
> index 022bb54fb748..e4897dad34ab 100644
> --- a/drivers/iio/imu/adis.c
> +++ b/drivers/iio/imu/adis.c
> @@ -365,7 +365,7 @@ static int adis_self_test(struct adis *adis)
> }
>
> /**
> - * adis_inital_startup() - Performs device self-test
> + * __adis_initial_startup() - Device initial setup
> * @adis: The adis device
> *
> * Returns 0 if the device is operational, a negative error code otherwise.
> @@ -373,28 +373,22 @@ static int adis_self_test(struct adis *adis)
> * This function should be called early on in the device initialization sequence
> * to ensure that the device is in a sane and known state and that it is usable.
> */
> -int adis_initial_startup(struct adis *adis)
> +int __adis_initial_startup(struct adis *adis)
> {
> int ret;
>
> - mutex_lock(&adis->state_lock);
> -
> ret = adis_self_test(adis);
> if (ret) {
> dev_err(&adis->spi->dev, "Self-test failed, trying reset.\n");
> __adis_reset(adis);
> ret = adis_self_test(adis);
> - if (ret) {
> + if (ret)
> dev_err(&adis->spi->dev, "Second self-test failed, giving up.\n");
> - goto out_unlock;
> - }
> }
>
> -out_unlock:
> - mutex_unlock(&adis->state_lock);
> return ret;
> }
> -EXPORT_SYMBOL_GPL(adis_initial_startup);
> +EXPORT_SYMBOL_GPL(__adis_initial_startup);
>
> /**
> * adis_single_conversion() - Performs a single sample conversion
> diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h
> index d2fcf45b4cef..15e75670f923 100644
> --- a/include/linux/iio/imu/adis.h
> +++ b/include/linux/iio/imu/adis.h
> @@ -297,6 +297,7 @@ static inline int adis_read_reg_32(struct adis *adis, unsigned int reg,
>
> int adis_enable_irq(struct adis *adis, bool enable);
> int __adis_check_status(struct adis *adis);
> +int __adis_initial_startup(struct adis *adis);
>
> static inline int adis_check_status(struct adis *adis)
> {
> @@ -309,7 +310,17 @@ static inline int adis_check_status(struct adis *adis)
> return ret;
> }
>
> -int adis_initial_startup(struct adis *adis);
> +/* locked version of __adis_initial_startup() */
> +static inline int adis_initial_startup(struct adis *adis)
> +{
> + int ret;
> +
> + mutex_lock(&adis->state_lock);
> + ret = __adis_initial_startup(adis);
> + mutex_unlock(&adis->state_lock);
> +
> + return ret;
> +}
>
> int adis_single_conversion(struct iio_dev *indio_dev,
> const struct iio_chan_spec *chan, unsigned int error_mask,
next prev parent reply other threads:[~2020-02-14 14:31 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-10 13:25 [PATCH v2 1/9] iio: imu: adis16480: initialize adis_data statically Alexandru Ardelean
2020-02-10 13:25 ` [PATCH v2 2/9] iio: imu: adis16400: " Alexandru Ardelean
2020-02-14 14:29 ` Jonathan Cameron
2020-02-10 13:26 ` [PATCH v2 3/9] iio: gyro: adis16136: " Alexandru Ardelean
2020-02-14 14:30 ` Jonathan Cameron
2020-02-10 13:26 ` [PATCH v2 4/9] iio: imu: adis: add unlocked __adis_initial_startup() Alexandru Ardelean
2020-02-14 14:31 ` Jonathan Cameron [this message]
2020-02-10 13:26 ` [PATCH v2 5/9] iio: imu: adis: Add self_test_reg variable Alexandru Ardelean
2020-02-14 14:33 ` Jonathan Cameron
2020-02-10 13:26 ` [PATCH v2 6/9] iio: imu: adis: Refactor adis_initial_startup Alexandru Ardelean
2020-02-14 14:39 ` Jonathan Cameron
2020-02-10 13:26 ` [PATCH v2 7/9] iio: imu: adis: add support product ID check in adis_initial_startup Alexandru Ardelean
2020-02-14 14:41 ` Jonathan Cameron
2020-02-10 13:26 ` [PATCH v2 8/9] iio: adis16480: Make use of __adis_initial_startup Alexandru Ardelean
2020-02-14 14:44 ` Jonathan Cameron
2020-02-10 13:26 ` [PATCH v2 9/9] iio: adis16460: " Alexandru Ardelean
2020-02-14 14:45 ` Jonathan Cameron
2020-02-14 14:28 ` [PATCH v2 1/9] iio: imu: adis16480: initialize adis_data statically Jonathan Cameron
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