This is a note to let you know that I've just added the patch titled iio: adc: mediatek: fix unset field to the 5.4-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-mediatek-fix-unset-field.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 15207a92e019803d62687455d8aa2ff9eb3dc82c Mon Sep 17 00:00:00 2001 From: Fabien Parent <fparent@xxxxxxxxxxxx> Date: Sun, 18 Oct 2020 21:46:44 +0200 Subject: iio: adc: mediatek: fix unset field From: Fabien Parent <fparent@xxxxxxxxxxxx> commit 15207a92e019803d62687455d8aa2ff9eb3dc82c upstream. dev_comp field is used in a couple of places but it is never set. This results in kernel oops when dereferencing a NULL pointer. Set the `dev_comp` field correctly in the probe function. Fixes: 6d97024dce23 ("iio: adc: mediatek: mt6577-auxadc, add mt6765 support") Signed-off-by: Fabien Parent <fparent@xxxxxxxxxxxx> Reviewed-by: Matthias Brugger <matthias.bgg@xxxxxxxxx> Cc: <Stable@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20201018194644.3366846-1-fparent@xxxxxxxxxxxx Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/iio/adc/mt6577_auxadc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/iio/adc/mt6577_auxadc.c +++ b/drivers/iio/adc/mt6577_auxadc.c @@ -9,9 +9,9 @@ #include <linux/err.h> #include <linux/kernel.h> #include <linux/module.h> -#include <linux/of.h> -#include <linux/of_device.h> +#include <linux/mod_devicetable.h> #include <linux/platform_device.h> +#include <linux/property.h> #include <linux/iopoll.h> #include <linux/io.h> #include <linux/iio/iio.h> @@ -279,6 +279,8 @@ static int mt6577_auxadc_probe(struct pl goto err_disable_clk; } + adc_dev->dev_comp = device_get_match_data(&pdev->dev); + mutex_init(&adc_dev->lock); mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC, Patches currently in stable-queue which might be from fparent@xxxxxxxxxxxx are queue-5.4/iio-adc-mediatek-fix-unset-field.patch