Patch "iio: temperature: ltc2983: allocate iio channels once" has been added to the 5.10-stable tree

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This is a note to let you know that I've just added the patch titled

    iio: temperature: ltc2983: allocate iio channels once

to the 5.10-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     iio-temperature-ltc2983-allocate-iio-channels-once.patch
and it can be found in the queue-5.10 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 4132f19173211856d35180958d2754f5c56d520a Mon Sep 17 00:00:00 2001
From: Cosmin Tanislav <cosmin.tanislav@xxxxxxxxxx>
Date: Fri, 14 Oct 2022 15:37:22 +0300
Subject: iio: temperature: ltc2983: allocate iio channels once

From: Cosmin Tanislav <cosmin.tanislav@xxxxxxxxxx>

commit 4132f19173211856d35180958d2754f5c56d520a upstream.

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@xxxxxxxxxx>
Fixes: f110f3188e563 ("iio: temperature: Add support for LTC2983")
Cc: <Stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221014123724.1401011-2-demonsingur@xxxxxxxxx
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/iio/temperature/ltc2983.c |   13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

--- a/drivers/iio/temperature/ltc2983.c
+++ b/drivers/iio/temperature/ltc2983.c
@@ -1376,13 +1376,6 @@ static int ltc2983_setup(struct ltc2983_
 		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));
@@ -1494,6 +1487,12 @@ static int ltc2983_probe(struct spi_devi
 	if (ret)
 		return ret;
 
+	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;


Patches currently in stable-queue which might be from cosmin.tanislav@xxxxxxxxxx are

queue-5.10/iio-temperature-ltc2983-allocate-iio-channels-once.patch



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