From: Bartosz Golaszewski <brgl@kernel.org>
To: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: "Nuno Sá" <nuno.sa@analog.com>,
"Andy Shevchenko" <andy@kernel.org>,
"Linus Walleij" <linusw@kernel.org>,
"Bartosz Golaszewski" <brgl@kernel.org>,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-gpio@vger.kernel.org,
"Jonathan Cameron" <Jonathan.Cameron@huawei.com>,
"Jonathan Cameron" <jic23@kernel.org>,
"David Lechner" <dlechner@baylibre.com>
Subject: Re: [PATCH v4 1/4] iio: adc: ti-ads7950: switch to using guard() notation
Date: Mon, 30 Mar 2026 05:15:42 -0400 [thread overview]
Message-ID: <CAMRc=Mc0hMh2vL1qPo2SdKqvOKDEJaXm6rGKYeuA6mc8va2FWA@mail.gmail.com> (raw)
In-Reply-To: <20260329-ti-ads7950-facelift-v4-1-c568c508c49a@gmail.com>
On Mon, 30 Mar 2026 00:47:06 +0200, Dmitry Torokhov
<dmitry.torokhov@gmail.com> said:
> guard() notation allows early returns when encountering errors, making
> control flow more obvious. Use it.
>
> Reviewed-by: David Lechner <dlechner@baylibre.com>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> ---
> drivers/iio/adc/ti-ads7950.c | 83 +++++++++++++++++---------------------------
> 1 file changed, 31 insertions(+), 52 deletions(-)
>
> diff --git a/drivers/iio/adc/ti-ads7950.c b/drivers/iio/adc/ti-ads7950.c
> index 028acd42741f..6e9ea9cc33bf 100644
> --- a/drivers/iio/adc/ti-ads7950.c
> +++ b/drivers/iio/adc/ti-ads7950.c
> @@ -299,18 +299,19 @@ static irqreturn_t ti_ads7950_trigger_handler(int irq, void *p)
> struct ti_ads7950_state *st = iio_priv(indio_dev);
> int ret;
>
> - mutex_lock(&st->slock);
> - ret = spi_sync(st->spi, &st->ring_msg);
> - if (ret < 0)
> - goto out;
> -
> - iio_push_to_buffers_with_ts_unaligned(indio_dev, &st->rx_buf[2],
> - sizeof(*st->rx_buf) *
> - TI_ADS7950_MAX_CHAN,
> - iio_get_time_ns(indio_dev));
> -
> -out:
> - mutex_unlock(&st->slock);
> + do {
> + guard(mutex)(&st->slock);
Am I missing something? Why isn't it just a:
scoped_guard(mutex, &st->slock) {
...
}
?
Bart
next prev parent reply other threads:[~2026-03-30 9:15 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-29 22:47 [PATCH v4 0/4] ti-ads7950: fix gpio handling and facelift Dmitry Torokhov
2026-03-29 22:47 ` [PATCH v4 1/4] iio: adc: ti-ads7950: switch to using guard() notation Dmitry Torokhov
2026-03-30 9:15 ` Bartosz Golaszewski [this message]
2026-03-30 9:18 ` Dmitry Torokhov
2026-03-30 9:21 ` Bartosz Golaszewski
2026-04-12 18:36 ` Jonathan Cameron
2026-03-29 22:47 ` [PATCH v4 2/4] iio: adc: ti-ads7950: simplify check for spi_setup() failures Dmitry Torokhov
2026-03-30 9:15 ` Bartosz Golaszewski
2026-03-29 22:47 ` [PATCH v4 3/4] iio: adc: ti-ads7950: switch to using devm_regulator_get_enable_read_voltage() Dmitry Torokhov
2026-03-30 9:17 ` Bartosz Golaszewski
2026-03-29 22:47 ` [PATCH v4 4/4] iio: adc: ti-ads7950: complete conversion to using managed resources Dmitry Torokhov
2026-03-30 9:20 ` Bartosz Golaszewski
2026-03-30 9:24 ` Dmitry Torokhov
2026-03-30 10:15 ` Andy Shevchenko
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