Please don't say RESEND, say [PATCH v2]. RESEND is for when we ignored your patch. (Maybe we made a mistake or maybe the mailing list tagged it as spam and deleted it or something). Use [PATCH v2] instead. On Fri, Apr 26, 2019 at 03:38:37PM +0800, Chengguang Xu wrote: > When allocating dynamic major, the minor range overlap check > in __register_chrdev_region() will not fail, so actually > there is no real case to passing non negative error code to > caller. However, set variable ret to -EBUSY before chekcking > minor range overlap will avoid false-positive warning from > code analyzing tool(like Smatch) and also make the code more > easy to understand. > > Suggested-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> > Signed-off-by: Chengguang Xu <cgxu519@xxxxxxx> > --- Then here under the --- cut off line put: v2: rebase against the latest linux-next That way we will remember why the patch was sent twice and what changed. > fs/char_dev.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > regards, dan carpenter