Hi all, After merging the driver-core tree, today's linux-next build (arm multi_v7_defconfig) produced this warning: fs/ubifs/debug.c: In function 'dbg_debugfs_init_fs': fs/ubifs/debug.c:2812:6: warning: unused variable 'err' [-Wunused-variable] int err, n; ^~~ Introduced by commit 702d6a834b49 ("ubifs: no need to check return value of debugfs_create functions") -- Cheers, Stephen Rothwell