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authorKay Sievers <kay.sievers@vrfy.org>2007-04-06 01:40:38 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2007-04-27 10:57:31 -0700
commit22af74f3b221f1436a37554501431e51c06ee77e (patch)
tree11b0a9e75f2e7f80cf4a2617d74a0d6caaa023d5 /drivers/base
parent16574dccd8f62dc1b585325f8a6a0aab10047ed8 (diff)
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: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 72c6ee57471b..f69305c7269d 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -296,6 +296,9 @@ out:
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;
}