This is a note to let you know that I've just added the patch titled
iio: adc: ti-ads7950: Set `can_sleep` flag for GPIO chip
to the 6.1-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-adc-ti-ads7950-set-can_sleep-flag-for-gpio-chip.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 363c7dc72f79edd55bf1c4380e0fbf7f1bbc2c86 Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@xxxxxxxxxx>
Date: Sun, 12 Mar 2023 14:09:33 -0700
Subject: iio: adc: ti-ads7950: Set `can_sleep` flag for GPIO chip
From: Lars-Peter Clausen <lars@xxxxxxxxxx>
commit 363c7dc72f79edd55bf1c4380e0fbf7f1bbc2c86 upstream.
The ads7950 uses a mutex as well as SPI transfers in its GPIO callbacks.
This means these callbacks can sleep and the `can_sleep` flag should be
set.
Having the flag set will make sure that warnings are generated when calling
any of the callbacks from a potentially non-sleeping context.
Fixes: c97dce792dc8 ("iio: adc: ti-ads7950: add GPIO support")
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
Acked-by: David Lechner <david@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230312210933.2275376-1-lars@xxxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/adc/ti-ads7950.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/iio/adc/ti-ads7950.c
+++ b/drivers/iio/adc/ti-ads7950.c
@@ -634,6 +634,7 @@ static int ti_ads7950_probe(struct spi_d
st->chip.label = dev_name(&st->spi->dev);
st->chip.parent = &st->spi->dev;
st->chip.owner = THIS_MODULE;
+ st->chip.can_sleep = true;
st->chip.base = -1;
st->chip.ngpio = TI_ADS7950_NUM_GPIOS;
st->chip.get_direction = ti_ads7950_get_direction;
Patches currently in stable-queue which might be from lars@xxxxxxxxxx are
queue-6.1/iio-buffer-correctly-return-bytes-written-in-output-buffers.patch
queue-6.1/iio-buffer-make-sure-o_nonblock-is-respected.patch
queue-6.1/iio-adc-ti-ads7950-set-can_sleep-flag-for-gpio-chip.patch
