This is a note to let you know that I've just added the patch titled
iio: sw-device: Fix config group initialization
to the 4.9-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-sw-device-fix-config-group-initialization.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c42f8218610aa09d7d3795e5810387673c1f84b6 Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@xxxxxxxxxx>
Date: Thu, 9 Mar 2017 17:20:04 +0100
Subject: iio: sw-device: Fix config group initialization
From: Lars-Peter Clausen <lars@xxxxxxxxxx>
commit c42f8218610aa09d7d3795e5810387673c1f84b6 upstream.
Use the IS_ENABLED() helper macro to ensure that the configfs group is
initialized either when configfs is built-in or when configfs is built as a
module. Otherwise software device creation will result in undefined
behaviour when configfs is built as a module since the configfs group for
the device not properly initialized.
Similar to commit b2f0c09664b7 ("iio: sw-trigger: Fix config group
initialization").
Fixes: 0f3a8c3f34f7 ("iio: Add support for creating IIO devices via configfs")
Reported-by: Miguel Robles <miguel.robles@xxxxxxxxxx>
Signed-off-by: Lars-Peter Clausen <lars@xxxxxxxxxx>
Acked-by: Daniel Baluta <daniel.baluta@xxxxxxxxx>
Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/iio/sw_device.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/linux/iio/sw_device.h
+++ b/include/linux/iio/sw_device.h
@@ -62,7 +62,7 @@ void iio_swd_group_init_type_name(struct
const char *name,
struct config_item_type *type)
{
-#ifdef CONFIG_CONFIGFS_FS
+#if IS_ENABLED(CONFIG_CONFIGFS_FS)
config_group_init_type_name(&d->group, name, type);
#endif
}
Patches currently in stable-queue which might be from lars@xxxxxxxxxx are
queue-4.9/iio-sw-device-fix-config-group-initialization.patch