Re: [PATCH] drivers/misc: ti-st: remove redundant assignment to variable i
From: Greg Kroah-Hartman
Date: Sat Jan 11 2020 - 15:02:19 EST
On Tue, Dec 03, 2019 at 10:28:24AM +0300, Dan Carpenter wrote:
> On Mon, Dec 02, 2019 at 03:13:52PM +0000, Colin King wrote:
> > From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> >
> > The variable i is being initialized with a value that is never
> > read and it is being updated later with a new value in a for-loop.
> > The initialization is redundant and can be removed.
> >
> > Addresses-Coverity: ("Unused value")
> > Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> > ---
> > drivers/misc/ti-st/st_core.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/misc/ti-st/st_core.c b/drivers/misc/ti-st/st_core.c
> > index 2ae9948a91e1..6255d9b88122 100644
> > --- a/drivers/misc/ti-st/st_core.c
> > +++ b/drivers/misc/ti-st/st_core.c
> > @@ -736,7 +736,7 @@ static int st_tty_open(struct tty_struct *tty)
> >
> > static void st_tty_close(struct tty_struct *tty)
> > {
> > - unsigned char i = ST_MAX_CHANNELS;
> > + unsigned char i;
> > unsigned long flags = 0;
>
> I'm surprised that flags doesn't generate a warning as well.
Yes, flags should be not initialized as well.
Colin, can you resend a v2 with that added?
thanks,
greg k-h