From: Tilman Schmidt <tilman@imap.cc>

This patch to the Siemens Gigaset driver fixes the compile warning
"ignoring return value of 'class_device_create_file', declared with
attribute warn_unused_result" appearing with CONFIG_ENABLE_MUST_CHECK=y in
release 2.6.18-rc1-mm1.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Acked-by: Hansjoerg Lipp <hjlipp@web.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 drivers/isdn/gigaset/proc.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -puN drivers/isdn/gigaset/proc.c~isdn4linux-gigaset-driver-fix-__must_check-warning drivers/isdn/gigaset/proc.c
--- a/drivers/isdn/gigaset/proc.c~isdn4linux-gigaset-driver-fix-__must_check-warning
+++ a/drivers/isdn/gigaset/proc.c
@@ -84,5 +84,6 @@ void gigaset_init_dev_sysfs(struct cards
 		return;
 
 	gig_dbg(DEBUG_INIT, "setting up sysfs");
-	device_create_file(cs->tty_dev, &dev_attr_cidmode);
+	if (device_create_file(cs->tty_dev, &dev_attr_cidmode))
+		dev_err(cs->dev, "could not create sysfs attribute\n");
 }
_