From: Kusanagi Kouichi <slash@xxxxxxxxxxxxxxx>
[ Upstream commit 4250b047039d324e0ff65267c8beb5bad5052a86 ]
If DEBUG_FS=n, compile fails with the following error:
kernel/trace/trace.c: In function 'tracing_init_dentry':
kernel/trace/trace.c:8658:9: error: passing argument 3 of 'debugfs_create_automount' from incompatible pointer type [-Werror=incompatible-pointer-types]
8658 | trace_automount, NULL);
| ^~~~~~~~~~~~~~~
| |
| struct vfsmount * (*)(struct dentry *, void *)
In file included from kernel/trace/trace.c:24:
./include/linux/debugfs.h:206:25: note: expected 'struct vfsmount * (*)(void *)' but argument is of type 'struct vfsmount * (*)(struct dentry *, void *)'
206 | struct vfsmount *(*f)(void *),
| ~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
Signed-off-by: Kusanagi Kouichi <slash@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20191121102021787.MLMY.25002.ppp.dion.ne.jp@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
include/linux/debugfs.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index 3b0ba54cc4d5b..3bc1034c57e66 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -54,6 +54,8 @@ static const struct file_operations __fops = { \
.llseek = no_llseek, \
}
+typedef struct vfsmount *(*debugfs_automount_t)(struct dentry *, void *);
+
#if defined(CONFIG_DEBUG_FS)
struct dentry *debugfs_lookup(const char *name, struct dentry *parent);
@@ -75,7 +77,6 @@ struct dentry *debugfs_create_dir(const char *name, struct dentry *parent);
struct dentry *debugfs_create_symlink(const char *name, struct dentry *parent,
const char *dest);
-typedef struct vfsmount *(*debugfs_automount_t)(struct dentry *, void *);
struct dentry *debugfs_create_automount(const char *name,
struct dentry *parent,
debugfs_automount_t f,
@@ -204,7 +205,7 @@ static inline struct dentry *debugfs_create_symlink(const char *name,
static inline struct dentry *debugfs_create_automount(const char *name,
struct dentry *parent,
- struct vfsmount *(*f)(void *),
+ debugfs_automount_t f,
void *data)
{
return ERR_PTR(-ENODEV);
--
2.20.1
