2019-11-27 05:45:37

by Austin Kim

[permalink] [raw]
Subject: [PATCH] brcmsmac: Remove always false 'channel < 0' statement

As 'channel' is declared as u16, the following statement is always false.
channel < 0

So we can remove unnecessary 'always false' statement.

Signed-off-by: Austin Kim <[email protected]>
---
drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c
index 3f09d89..7f2c15c 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c
@@ -5408,7 +5408,7 @@ int brcms_c_set_channel(struct brcms_c_info *wlc, u16 channel)
{
u16 chspec = ch20mhz_chspec(channel);

- if (channel < 0 || channel > MAXCHANNEL)
+ if (channel > MAXCHANNEL)
return -EINVAL;

if (!brcms_c_valid_chanspec_db(wlc->cmi, chspec))
--
2.6.2


2019-11-27 13:04:32

by Austin Kim

[permalink] [raw]
Subject: Re: [PATCH] brcmsmac: Remove always false 'channel < 0' statement

2019년 11월 27일 (수) 오후 7:48, Sergei Shtylyov
<[email protected]>님이 작성:
>
> On 27.11.2019 8:43, Austin Kim wrote:
>
> > As 'channel' is declared as u16, the following statement is always false.
> > channel < 0
> >
> > So we can remove unnecessary 'always false' statement.
>
> It's an expression, not a statement.
>

According to below link, it is okay to use 'statement' in above case.
https://en.wikipedia.org/wiki/Statement_(computer_science)

Why don't you show your opition about patch rather than commit message?

Thanks,
Austin Kim

> > Signed-off-by: Austin Kim <[email protected]>
> > ---
> > drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c
> > index 3f09d89..7f2c15c 100644
> > --- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c
> > +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/main.c
> > @@ -5408,7 +5408,7 @@ int brcms_c_set_channel(struct brcms_c_info *wlc, u16 channel)
> > {
> > u16 chspec = ch20mhz_chspec(channel);
> >
> > - if (channel < 0 || channel > MAXCHANNEL)
> > + if (channel > MAXCHANNEL)
> > return -EINVAL;
> >
> > if (!brcms_c_valid_chanspec_db(wlc->cmi, chspec))
>
> MBR, Sergei
>

2019-11-27 22:23:23

by Austin Kim

[permalink] [raw]
Subject: Re: [PATCH] brcmsmac: Remove always false 'channel < 0' statement

2019년 11월 27일 (수) 오후 10:35, Kalle Valo <[email protected]>님이 작성:
>
> Austin Kim <[email protected]> writes:
>
> > 2019년 11월 27일 (수) 오후 7:48, Sergei Shtylyov
> > <[email protected]>님이 작성:
> >>
> >> On 27.11.2019 8:43, Austin Kim wrote:
> >>
> >> > As 'channel' is declared as u16, the following statement is always false.
> >> > channel < 0
> >> >
> >> > So we can remove unnecessary 'always false' statement.
> >>
> >> It's an expression, not a statement.
> >>
> >
> > According to below link, it is okay to use 'statement' in above case.
> > https://en.wikipedia.org/wiki/Statement_(computer_science)
>
> I don't have time to start arguing about this, and I'm no C language
> lawyer either, but all I say is that I agree with Sergei here.

Thanks for your opinion.
I will use 'expression' rather than 'statement' when I upstream
similar patch later.

>
> > Why don't you show your opition about patch rather than commit message?
>
> But this comment is not ok. Patch review (including commit logs) is the
> core principle of upstream development so you need to have an open mind
> for all comments, even the ones you don't like.

Oh! I Agreed.
If I were you, I would leave similar comment.

Thanks,
Austin Kim

>
> --
> https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches