LinuxLists.cc - Fw: usbcore missing parentheses in USE_NEW

2020-01-01 14:54:25

Subject: Fw: usbcore missing parentheses in USE_NEW_SCHEME

I think there is missing parentheses in macro USE_NEW_SCHEME, it should be:
#define USE_NEW_SCHEME(i, scheme) ((i) / 2 == (int)(scheme))

causes a fail wiht "device descriptor read/64, error -110" using my usb drive on vmware using usb 3.0 hub.
from https://github.com/torvalds/linux/commit/25244227158e1502062041365a439a54cb8fe673#diff-28615d62e1250eadc353d804f49bc6d6

someone changed USE_NEW_SCHEME, but without parentheses for second parameter. as result. in fuction use_new_scheme when old_scheme_first is 1, use_new_scheme will return 1 always(actullay is should return 0). it also make https://github.com/torvalds/linux/commit/bd0e6c9614b95352eb31d0207df16dc156c527fa#diff-28615d62e1250eadc353d804f49bc6d6 fails.

I cannot use git send-mail, there some issue with my network provider. patch below, :

From 85f01b89d050a988f4d9fc78232de47e793c6a7c Mon Sep 17 00:00:00 2001
From: atmgnd <[email protected]>
Date: Wed, 1 Jan 2020 21:27:13 +0800
Subject: [PATCH] usb: hub: missing parentheses in USE_NEW_SCHEME

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 ?

Signed-off-by: atmgnd <[email protected]>
---
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

Attachments:

0001-usb-hub-missing-parentheses-in-USE_NEW_SCHEME.patch (1.29 kB)

2020-01-01 16:40:27

by Randy Dunlap

[permalink] [raw]

Subject: Re: Fw: usbcore missing parentheses in USE_NEW_SCHEME

[adding linux-usb mailing list]

On 1/1/20 6:46 AM, atmgnd wrote:
> I think there is missing parentheses in macro USE_NEW_SCHEME, it should be:
> #define USE_NEW_SCHEME(i, scheme) ((i) / 2 == (int)(scheme))
>
> causes a fail wiht "device descriptor read/64, error -110" using my usb drive on vmware using usb 3.0 hub.
> from https://github.com/torvalds/linux/commit/25244227158e1502062041365a439a54cb8fe673#diff-28615d62e1250eadc353d804f49bc6d6
>
> someone changed USE_NEW_SCHEME, but without parentheses for second parameter. as result. in fuction use_new_scheme when old_scheme_first is 1, use_new_scheme will return 1 always(actullay is should return 0). it also make https://github.com/torvalds/linux/commit/bd0e6c9614b95352eb31d0207df16dc156c527fa#diff-28615d62e1250eadc353d804f49bc6d6 fails.
>
> I cannot use git send-mail, there some issue with my network provider. patch below, :
>
>
> From 85f01b89d050a988f4d9fc78232de47e793c6a7c Mon Sep 17 00:00:00 2001
> From: atmgnd <[email protected]>
> Date: Wed, 1 Jan 2020 21:27:13 +0800
> Subject: [PATCH] usb: hub: missing parentheses in USE_NEW_SCHEME
>
> 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 ?
>
> Signed-off-by: atmgnd <[email protected]>
> ---
> 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
>

--
~Randy

2020-01-02 15:23:42

by Alan Stern

[permalink] [raw]

Subject: Re: Fw: usbcore missing parentheses in USE_NEW_SCHEME

On Wed, 1 Jan 2020, Randy Dunlap wrote:

> [adding linux-usb mailing list]
>
> On 1/1/20 6:46 AM, atmgnd wrote:
> > I think there is missing parentheses in macro USE_NEW_SCHEME, it should be:
> > #define USE_NEW_SCHEME(i, scheme) ((i) / 2 == (int)(scheme))
> >
> > causes a fail wiht "device descriptor read/64, error -110" using my usb drive on vmware using usb 3.0 hub.
> > from https://github.com/torvalds/linux/commit/25244227158e1502062041365a439a54cb8fe673#diff-28615d62e1250eadc353d804f49bc6d6
> >
> > someone changed USE_NEW_SCHEME, but without parentheses for second parameter. as result. in fuction use_new_scheme when old_scheme_first is 1, use_new_scheme will return 1 always(actullay is should return 0). it also make https://github.com/torvalds/linux/commit/bd0e6c9614b95352eb31d0207df16dc156c527fa#diff-28615d62e1250eadc353d804f49bc6d6 fails.
> >
> > I cannot use git send-mail, there some issue with my network provider. patch below, :
> >
> >
> > From 85f01b89d050a988f4d9fc78232de47e793c6a7c Mon Sep 17 00:00:00 2001
> > From: atmgnd <[email protected]>
> > Date: Wed, 1 Jan 2020 21:27:13 +0800
> > Subject: [PATCH] usb: hub: missing parentheses in USE_NEW_SCHEME
> >
> > 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 ?
> >
> > Signed-off-by: atmgnd <[email protected]>
> > ---
> > 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

atmgnd:

Please resend this patch to Greg Kroah-Hartman
<[email protected]> with the appropriate CC's. Also, your
Signed-off-by: line should contain a real name, not an email userid
(you probably don't use "atmgnd" as your signature on legal
documents!).

When you resend the patch, you can include:

Acked-by: Alan Stern <[email protected]>

Alan Stern

2020-01-04 03:25:39

by atmgnd

[permalink] [raw]

Subject: Re: Fw: usbcore missing parentheses in USE_NEW_SCHEME

Greg Kroah-Hartman:
here is the new patch:

From 85f01b89d050a988f4d9fc78232de47e793c6a7c Mon Sep 17 00:00:00 2001
From: Qi.Zhou <[email protected]>
Date: Wed, 1 Jan 2020 21:27:13 +0800
Subject: [PATCH] usb: hub: missing parentheses in USE_NEW_SCHEME

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 <[email protected]>
Signed-off-by: Qi.Zhou <[email protected]>
---
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

Sent with ProtonMail Secure Email.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Thursday, January 2, 2020 11:22 PM, Alan Stern <[email protected]> wrote:

> On Wed, 1 Jan 2020, Randy Dunlap wrote:
>
> > [adding linux-usb mailing list]
> > On 1/1/20 6:46 AM, atmgnd wrote:
> >
> > > I think there is missing parentheses in macro USE_NEW_SCHEME, it should be:
> > > #define USE_NEW_SCHEME(i, scheme) ((i) / 2 == (int)(scheme))
> > > causes a fail wiht "device descriptor read/64, error -110" using my usb drive on vmware using usb 3.0 hub.
> > > from https://github.com/torvalds/linux/commit/25244227158e1502062041365a439a54cb8fe673#diff-28615d62e1250eadc353d804f49bc6d6
> > > someone changed USE_NEW_SCHEME, but without parentheses for second parameter. as result. in fuction use_new_scheme when old_scheme_first is 1, use_new_scheme will return 1 always(actullay is should return 0). it also make https://github.com/torvalds/linux/commit/bd0e6c9614b95352eb31d0207df16dc156c527fa#diff-28615d62e1250eadc353d804f49bc6d6 fails.
> > > I cannot use git send-mail, there some issue with my network provider. patch below, :
> > > From 85f01b89d050a988f4d9fc78232de47e793c6a7c Mon Sep 17 00:00:00 2001
> > > From: atmgnd [email protected]
> > > Date: Wed, 1 Jan 2020 21:27:13 +0800
> > > Subject: [PATCH] usb: hub: missing parentheses in USE_NEW_SCHEME
> > > 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 ?
> > >
> > > Signed-off-by: atmgnd [email protected]
> > >
> > > -----------------------------------------
> > >
> > > 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
>
> atmgnd:
>
> Please resend this patch to Greg Kroah-Hartman
> [email protected] with the appropriate CC's. Also, your
> Signed-off-by: line should contain a real name, not an email userid
> (you probably don't use "atmgnd" as your signature on legal
> documents!).
>
> When you resend the patch, you can include:
>
> Acked-by: Alan Stern [email protected]
>
> Alan Stern

2020-01-04 03:26:33

by atmgnd

[permalink] [raw]

Subject: Re: Fw: usbcore missing parentheses in USE_NEW_SCHEME

2020-01-04 08:51:56

by Greg Kroah-Hartman

[permalink] [raw]

Subject: Re: Fw: usbcore missing parentheses in USE_NEW_SCHEME

On Sat, Jan 04, 2020 at 03:24:04AM +0000, atmgnd wrote:
> Greg Kroah-Hartman:
> here is the new patch:
>
>
> >From 85f01b89d050a988f4d9fc78232de47e793c6a7c Mon Sep 17 00:00:00 2001
> From: Qi.Zhou <[email protected]>
> Date: Wed, 1 Jan 2020 21:27:13 +0800
> Subject: [PATCH] usb: hub: missing parentheses in USE_NEW_SCHEME

Please send this as a stand-alone patch, the header here should not be
in the body of the email.

Also, I doubt your name has a "." in it, right? :)

See the many many examples of patches on the mailing list for examples
of how this all should look, as well as read
Documentation/SubmittingPatches.

thanks,

greg k-h