From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
To: Cosmin Tanislav <demonsingur@gmail.com>
Cc: "Nuno Sá" <nuno.sa@analog.com>,
"Lars-Peter Clausen" <lars@metafoo.de>,
"Michael Hennerich" <Michael.Hennerich@analog.com>,
"Jonathan Cameron" <jic23@kernel.org>,
"Rob Herring" <robh+dt@kernel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
"Cosmin Tanislav" <cosmin.tanislav@analog.com>
Subject: Re: [PATCH 1/3] iio: temperature: ltc2983: allocate iio channels once
Date: Fri, 14 Oct 2022 15:11:47 +0100 [thread overview]
Message-ID: <20221014151123.00003268@huawei.com> (raw)
In-Reply-To: <20221014123724.1401011-2-demonsingur@gmail.com>
On Fri, 14 Oct 2022 15:37:22 +0300
Cosmin Tanislav <demonsingur@gmail.com> wrote:
> From: Cosmin Tanislav <cosmin.tanislav@analog.com>
>
> Currently, every time the device wakes up from sleep, the
> iio_chan array is reallocated, leaking the previous one
> until the device is removed (basically never).
>
> Move the allocation to the probe function to avoid this.
>
> Signed-off-by: Cosmin Tanislav <cosmin.tanislav@analog.com>
Hi Cosmin,
Please give a fixes tag for this one as we'll definitely want to
backport it.
Reply to this patch is fine as b4 will pick it up like any other tag.
> ---
> drivers/iio/temperature/ltc2983.c | 13 ++++++-------
> 1 file changed, 6 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/iio/temperature/ltc2983.c b/drivers/iio/temperature/ltc2983.c
> index b652d2b39bcf..a60ccf183687 100644
> --- a/drivers/iio/temperature/ltc2983.c
> +++ b/drivers/iio/temperature/ltc2983.c
> @@ -1385,13 +1385,6 @@ static int ltc2983_setup(struct ltc2983_data *st, bool assign_iio)
> return ret;
> }
>
> - st->iio_chan = devm_kzalloc(&st->spi->dev,
> - st->iio_channels * sizeof(*st->iio_chan),
> - GFP_KERNEL);
> -
> - if (!st->iio_chan)
> - return -ENOMEM;
> -
> ret = regmap_update_bits(st->regmap, LTC2983_GLOBAL_CONFIG_REG,
> LTC2983_NOTCH_FREQ_MASK,
> LTC2983_NOTCH_FREQ(st->filter_notch_freq));
> @@ -1514,6 +1507,12 @@ static int ltc2983_probe(struct spi_device *spi)
> gpiod_set_value_cansleep(gpio, 0);
> }
>
> + st->iio_chan = devm_kzalloc(&spi->dev,
> + st->iio_channels * sizeof(*st->iio_chan),
> + GFP_KERNEL);
> + if (!st->iio_chan)
> + return -ENOMEM;
> +
> ret = ltc2983_setup(st, true);
> if (ret)
> return ret;
next prev parent reply other threads:[~2022-10-14 14:12 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-14 12:37 [PATCH 0/3] Support more parts in LTC2983 Cosmin Tanislav
2022-10-14 12:37 ` [PATCH 1/3] iio: temperature: ltc2983: allocate iio channels once Cosmin Tanislav
2022-10-14 14:11 ` Jonathan Cameron [this message]
2022-10-14 15:18 ` Jonathan Cameron
2022-10-15 16:35 ` Jonathan Cameron
2022-10-14 12:37 ` [PATCH 2/3] dt-bindings: iio: temperature: ltc2983: support more parts Cosmin Tanislav
2022-10-14 15:37 ` Jonathan Cameron
2022-10-17 7:01 ` Cosmin Tanislav
2022-10-17 10:22 ` Jonathan Cameron
2022-10-17 1:59 ` Krzysztof Kozlowski
2022-10-17 6:53 ` Cosmin Tanislav
2022-10-17 10:26 ` Jonathan Cameron
2022-10-17 10:37 ` Jonathan Cameron
2022-10-17 23:26 ` Krzysztof Kozlowski
2022-10-17 9:38 ` Nuno Sá
2022-10-17 10:04 ` Nuno Sá
2022-10-17 23:32 ` Krzysztof Kozlowski
2022-10-18 6:01 ` Nuno Sá
2022-10-14 12:37 ` [PATCH 3/3] " Cosmin Tanislav
2022-10-14 15:44 ` Jonathan Cameron
2022-10-17 6:59 ` Cosmin Tanislav
2022-10-17 10:29 ` Jonathan Cameron
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