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Commit 22af74f3 authored by Kay Sievers's avatar Kay Sievers Committed by Greg Kroah-Hartman
Browse files

Driver core: warn when userspace writes to the uevent file in a non-supported way 



In the future we will allow the uevent type to be written to the uevent
file to trigger the different types of uevents.  But for now, as we only
support the ADD event, warn if userspace tries to write anything else to
this file.

Signed-off-by: default avatarKay Sievers <kay.sievers@vrfy.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 16574dcc

drivers/base/core.c

+3 −0
Original line number Diff line number Diff line
@@ -296,6 +296,9 @@ static ssize_t show_uevent(struct device *dev, struct device_attribute *attr, 
static ssize_t store_uevent(struct device *dev, struct device_attribute *attr,

			    const char *buf, size_t count)

{

	if (memcmp(buf, "add", 3) != 0)

		dev_err(dev, "uevent: unsupported action-string; this will "

			"be ignored in a future kernel version");

	kobject_uevent(&dev->kobj, KOBJ_ADD);

	return count;

}