| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.7 067/184] iio: sw-trigger: Fix config group initialization | Date | Thu, 22 Sep 2016 19:40:01 +0200 |
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4.7-stable review patch. If anyone has any objections, please let me know.
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From: Lars-Peter Clausen <lars@metafoo.de>
commit b2f0c09664b72b2f8c581383a9337ac3092e42c8 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 trigger creation will result in undefined behaviour when configfs is built as a mdoule since the configfs group for the trigger is not properly initialized.
Fixes: b662f809d410 ("iio: core: Introduce IIO software triggers") Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- include/linux/iio/sw_trigger.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/linux/iio/sw_trigger.h +++ b/include/linux/iio/sw_trigger.h @@ -62,7 +62,7 @@ void iio_swt_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(&t->group, name, type); #endif }
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