Hi Greg, After merging the driver-core tree, today's linux-next build (arm multi_v7_defconfig) failed like this: fs/debugfs/file.c:797:16: error: conflicting types for 'debugfs_create_devm_seqfile' struct dentry *debugfs_create_devm_seqfile(struct device *dev, const char *name, ^ In file included from fs/debugfs/file.c:21:0: include/linux/debugfs.h:102:16: note: previous declaration of 'debugfs_create_devm_seqfile' was here struct dentry *debugfs_create_devm_seqfile(struct device *dev, const char *name, ^ Caused by commit 98210b7f73f1 ("debugfs: add helper function to create device related seq_file") but I am not sure how ... it seems to be related to the warning I reported earlier as the following patch fixes it (and the warnings). From: Stephen Rothwell Date: Mon, 1 Dec 2014 18:42:52 +1100 Subject: [PATCH] debugfs: predeclare struct device Signed-off-by: Stephen Rothwell --- include/linux/debugfs.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h index d145287c0e44..37b17d95d648 100644 --- a/include/linux/debugfs.h +++ b/include/linux/debugfs.h @@ -21,6 +21,7 @@ #include struct file_operations; +struct device; struct debugfs_blob_wrapper { void *data; -- 2.1.3 -- Cheers, Stephen Rothwell sfr@canb.auug.org.au