linux-kernel - Re: [PATCH] usb: missing parentheses in USE_NEW

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Message-ID: <HdXgMrky4rCGyM4q7eTsrfOB4yGZRUNwV9YSXBPh98r2UZeFzREQj35K60r-8Lf9LYVgVuKCcmQ2l7ihAD9DoqAdluQrA3zbQrF03VtNC-0=@protonmail.com>
Date:   Sun, 05 Jan 2020 01:15:41 +0000
From:   atmgnd <atmgnd@...tonmail.com>
To:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
Cc:     Alan Stern <stern@...land.harvard.edu>,
        Randy Dunlap <rdunlap@...radead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        USB list <linux-usb@...r.kernel.org>
Subject: Re: [PATCH] usb: missing parentheses in USE_NEW_SCHEME

Is that ok ? Ordinarily I dont use protonmail, only because outlook mail is blocked by kernel email system.
So I register this email to send plain/text emails.
I will resend it.

Sent with ProtonMail Secure Email.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Saturday, January 4, 2020 7:46 PM, gregkh@...uxfoundation.org <gregkh@...uxfoundation.org> wrote:

> On Sat, Jan 04, 2020 at 11:02:01AM +0000, atmgnd wrote:
>
> > accroding to bd0e6c9#diff-28615d62e1250eadc353d804f49bc6d6, will try old enumeration
> > scheme first for high speed devices. for example, when a high speed device pluged in,
> > line 2720 should expand to 0 at the first time. USE_NEW_SCHEME(0, 0 || 0 || 1) === 0.
> > but it wrongly expand to 1(alway expand to 1 for high speed device), and change
> > USE_NEW_SCHEME to USE_NEW_SCHEME((i) % 2 == (int)(scheme)) may be better ?
> >
> > Acked-by: Alan Stern stern@...land.harvard.edu
> > Signed-off-by: Qi Zhou atmgnd@...look.com
> >
> > -----------------------------------------------------------------------------------------
> >
> > drivers/usb/core/hub.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> > diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
> > index f229ad6952c0..7d17deca7021 100644
> > --- a/drivers/usb/core/hub.c
> > +++ b/drivers/usb/core/hub.c
> > @@ -2692,7 +2692,7 @@ static unsigned hub_is_wusb(struct usb_hub *hub)
> > #define SET_ADDRESS_TRIES 2
> > #define GET_DESCRIPTOR_TRIES 2
> > #define SET_CONFIG_TRIES (2 * (use_both_schemes + 1))
> > -#define USE_NEW_SCHEME(i, scheme) ((i) / 2 == (int)scheme)
> > +#define USE_NEW_SCHEME(i, scheme) ((i) / 2 == (int)(scheme))
> >
> > #define HUB_ROOT_RESET_TIME 60 /* times are in msec */
> > #define HUB_SHORT_RESET_TIME 10
> >
> > ---------------------------------------------------------------------------------------
> >
> > 2.17.1
>
> Much better, but your From: name does not match your signed-off-by name :(