Currently chardev allows to share major, showing major with minor range for chardev will be more helpful.
Signed-off-by: Chengguang Xu cgxu519@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); }