Re: [PATCH] tty: hvcs: simplify if-if to if-else

From: Christophe Leroy
Date: Mon May 02 2022 - 10:33:54 EST




Le 24/04/2022 à 11:13, Wan Jiabing a écrit :
> Use if and else instead of if(A) and if (!A) and fix a coding style.
>
> Signed-off-by: Wan Jiabing <wanjiabing@xxxxxxxx>


Did you run 'checkpatch' on your patch ?

Should be

if (something)
do_something();
else
do_something_else();


or

if (something) {
do_something();
} else {
do_something_else();
do_more();
}


However, are you sure that those two things are going together and are
worth an if/else ? Did you look at commit
33f0f88f1c51ae5c2d593d26960c760ea154c2e2 ?


> ---
> drivers/tty/hvc/hvcs.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c
> index 245da1dfd818..9b7e8246a464 100644
> --- a/drivers/tty/hvc/hvcs.c
> +++ b/drivers/tty/hvc/hvcs.c
> @@ -581,10 +581,9 @@ static int hvcs_io(struct hvcs_struct *hvcsd)
>
> spin_unlock_irqrestore(&hvcsd->lock, flags);
> /* This is synch -- FIXME :js: it is not! */
> - if(got)
> + if (got)
> tty_flip_buffer_push(&hvcsd->port);
> -
> - if (!got) {
> + else {
> /* Do this _after_ the flip_buffer_push */
> spin_lock_irqsave(&hvcsd->lock, flags);
> vio_enable_interrupts(hvcsd->vdev);