patch "iio: temperature: ltc2983: allocate iio channels once" added to char-misc-linus

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

iio: temperature: ltc2983: allocate iio channels once

to my char-misc git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
in the char-misc-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 4132f19173211856d35180958d2754f5c56d520a Mon Sep 17 00:00:00 2001
From: Cosmin Tanislav <[email protected]>
Date: Fri, 14 Oct 2022 15:37:22 +0300
Subject: iio: temperature: ltc2983: allocate iio channels once

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.

---
 drivers/iio/temperature/ltc2983.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

index b652d2b39bcf..a60ccf183687 100644
@@ -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;

2.38.1