[PATCH 2/2] chardev: showing minor range for chardev in the output of /proc/devices

[Chengguang Xu]

Currently chardev allows to share major, showing
major with minor range for chardev will be more
helpful.

Signed-off-by: Chengguang Xu <cgxu...@gmx.com>
---
 fs/char_dev.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/char_dev.c b/fs/char_dev.c
index b25b1da097d5..6f00acdeb308 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -55,7 +55,9 @@ void chrdev_show(struct seq_file *f, off_t offset)
        mutex_lock(&chrdevs_lock);
        for (cd = chrdevs[major_to_index(offset)]; cd; cd = cd->next) {
                if (cd->major == offset)
-                       seq_printf(f, "%3d %s\n", cd->major, cd->name);
+                       seq_printf(f, "%3d %s (%u-%u)\n", cd->major, cd->name,
+                                  cd->baseminor,
+                                  cd->baseminor + cd->minorct - 1);
        }
        mutex_unlock(&chrdevs_lock);
 }
-- 
2.20.1