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From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Dan Williams <dan.j.williams@intel.com>
Cc: "Kuppuswamy,
	Sathyanarayanan"  <sathyanarayanan.kuppuswamy@linux.intel.com>,
	Alan Stern <stern@rowland.harvard.edu>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Borislav Petkov <bp@alien8.de>, X86 ML <x86@kernel.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>,
	Andreas Noever <andreas.noever@gmail.com>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Michael Jamet <michael.jamet@intel.com>,
	Yehezkel Bernat <YehezkelShB@gmail.com>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Mika Westerberg <mika.westerberg@linux.intel.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Jason Wang <jasowang@redhat.com>, Andi Kleen <ak@linux.intel.com>,
	Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux PCI <linux-pci@vger.kernel.org>,
	USB list <linux-usb@vger.kernel.org>,
	virtualization@lists.linux-foundation.org
Subject: Re: [PATCH v2 1/6] driver core: Move the "authorized" attribute from USB/Thunderbolt to core
Date: Thu, 30 Sep 2021 11:05:00 +0200	[thread overview]
Message-ID: <CAJZ5v0gOEffKJoH7P9=QOAxXFbMGOf9j0V1DsixQwaAehicnfA@mail.gmail.com> (raw)
In-Reply-To: <CAPcyv4gDgQYf0ct_Xy32gQBcWhs6d2uL+wUq4pfzszDHcUHbwQ@mail.gmail.com>

On Thu, Sep 30, 2021 at 6:59 AM Dan Williams <dan.j.williams@intel.com> wrote:
>
> On Wed, Sep 29, 2021 at 7:39 PM Kuppuswamy, Sathyanarayanan
> <sathyanarayanan.kuppuswamy@linux.intel.com> wrote:
> >
> >
> >
> > On 9/29/21 6:55 PM, Dan Williams wrote:
> > >> Also, you ignored the usb_[de]authorize_interface() functions and
> > >> their friends.
> > > Ugh, yes.
> >
> > I did not change it because I am not sure about the interface vs device
> > dependency.
> >
>
> This is was the rationale for has_probe_authorization flag. USB
> performs authorization of child devices based on the authorization
> state of the parent interface.
>
> > I think following change should work.
> >
> > diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
> > index f57b5a7a90ca..84969732d09c 100644
> > --- a/drivers/usb/core/driver.c
> > +++ b/drivers/usb/core/driver.c
> > @@ -334,7 +334,7 @@ static int usb_probe_interface(struct device *dev)
> >         if (udev->dev.authorized == false) {
> >                 dev_err(&intf->dev, "Device is not authorized for usage\n");
> >                 return error;
> > -       } else if (intf->authorized == 0) {
> > +       } else if (intf->dev.authorized == 0) {
>
> == false

Or even (!intf->dev.authorized).

> >                 dev_err(&intf->dev, "Interface %d is not authorized for usage\n",
> >                                 intf->altsetting->desc.bInterfaceNumber);
> >                 return error;
> > @@ -546,7 +546,7 @@ int usb_driver_claim_interface(struct usb_driver *driver,
> >                 return -EBUSY;
> >
> >         /* reject claim if interface is not authorized */
> > -       if (!iface->authorized)
> > +       if (!iface->dev.authorized)
>
> I'd do == false to keep it consistent with other conversions.

But this looks odd, FWIW.

WARNING: multiple messages have this Message-ID
From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Dan Williams <dan.j.williams@intel.com>
Cc: "Kuppuswamy,
	Sathyanarayanan" <sathyanarayanan.kuppuswamy@linux.intel.com>,
	Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Linux PCI <linux-pci@vger.kernel.org>,
	virtualization@lists.linux-foundation.org,
	Andreas Noever <andreas.noever@gmail.com>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Andi Kleen <ak@linux.intel.com>, Jonathan Corbet <corbet@lwn.net>,
	X86 ML <x86@kernel.org>, Ingo Molnar <mingo@redhat.com>,
	Alan Stern <stern@rowland.harvard.edu>,
	Michael Jamet <michael.jamet@intel.com>,
	Borislav Petkov <bp@alien8.de>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Mika Westerberg <mika.westerberg@linux.intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	USB list <linux-usb@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Yehezkel Bernat <YehezkelShB@gmail.com>
Subject: Re: [PATCH v2 1/6] driver core: Move the "authorized" attribute from USB/Thunderbolt to core
Date: Thu, 30 Sep 2021 11:05:00 +0200	[thread overview]
Message-ID: <CAJZ5v0gOEffKJoH7P9=QOAxXFbMGOf9j0V1DsixQwaAehicnfA@mail.gmail.com> (raw)
In-Reply-To: <CAPcyv4gDgQYf0ct_Xy32gQBcWhs6d2uL+wUq4pfzszDHcUHbwQ@mail.gmail.com>

On Thu, Sep 30, 2021 at 6:59 AM Dan Williams <dan.j.williams@intel.com> wrote:
>
> On Wed, Sep 29, 2021 at 7:39 PM Kuppuswamy, Sathyanarayanan
> <sathyanarayanan.kuppuswamy@linux.intel.com> wrote:
> >
> >
> >
> > On 9/29/21 6:55 PM, Dan Williams wrote:
> > >> Also, you ignored the usb_[de]authorize_interface() functions and
> > >> their friends.
> > > Ugh, yes.
> >
> > I did not change it because I am not sure about the interface vs device
> > dependency.
> >
>
> This is was the rationale for has_probe_authorization flag. USB
> performs authorization of child devices based on the authorization
> state of the parent interface.
>
> > I think following change should work.
> >
> > diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
> > index f57b5a7a90ca..84969732d09c 100644
> > --- a/drivers/usb/core/driver.c
> > +++ b/drivers/usb/core/driver.c
> > @@ -334,7 +334,7 @@ static int usb_probe_interface(struct device *dev)
> >         if (udev->dev.authorized == false) {
> >                 dev_err(&intf->dev, "Device is not authorized for usage\n");
> >                 return error;
> > -       } else if (intf->authorized == 0) {
> > +       } else if (intf->dev.authorized == 0) {
>
> == false

Or even (!intf->dev.authorized).

> >                 dev_err(&intf->dev, "Interface %d is not authorized for usage\n",
> >                                 intf->altsetting->desc.bInterfaceNumber);
> >                 return error;
> > @@ -546,7 +546,7 @@ int usb_driver_claim_interface(struct usb_driver *driver,
> >                 return -EBUSY;
> >
> >         /* reject claim if interface is not authorized */
> > -       if (!iface->authorized)
> > +       if (!iface->dev.authorized)
>
> I'd do == false to keep it consistent with other conversions.

But this looks odd, FWIW.
_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization

  reply	other threads:[~2021-09-30  9:05 UTC|newest]

Thread overview: 132+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-30  1:05 [PATCH v2 0/6] Add device filter support Kuppuswamy Sathyanarayanan
2021-09-30  1:05 ` [PATCH v2 1/6] driver core: Move the "authorized" attribute from USB/Thunderbolt to core Kuppuswamy Sathyanarayanan
2021-09-30  1:42   ` Alan Stern
2021-09-30  1:42     ` Alan Stern
2021-09-30  1:55     ` Dan Williams
2021-09-30  1:55       ` Dan Williams
2021-09-30  2:38       ` Kuppuswamy, Sathyanarayanan
2021-09-30  4:59         ` Dan Williams
2021-09-30  4:59           ` Dan Williams
2021-09-30  9:05           ` Rafael J. Wysocki [this message]
2021-09-30  9:05             ` Rafael J. Wysocki
2021-09-30 14:59       ` Alan Stern
2021-09-30 14:59         ` Alan Stern
2021-09-30 15:25         ` Dan Williams
2021-09-30 15:25           ` Dan Williams
2021-09-30 11:19   ` Yehezkel Bernat
2021-09-30 15:28     ` Dan Williams
2021-09-30 15:28       ` Dan Williams
2021-09-30 18:25       ` Yehezkel Bernat
2021-09-30 19:04         ` Dan Williams
2021-09-30 19:04           ` Dan Williams
2021-09-30 19:50           ` Kuppuswamy, Sathyanarayanan
2021-09-30 20:23             ` Dan Williams
2021-09-30 20:23               ` Dan Williams
2021-09-30  1:05 ` [PATCH v2 2/6] driver core: Add common support to skip probe for un-authorized devices Kuppuswamy Sathyanarayanan
2021-09-30 10:59   ` Michael S. Tsirkin
2021-09-30 10:59     ` Michael S. Tsirkin
2021-09-30 13:52     ` Greg Kroah-Hartman
2021-09-30 13:52       ` Greg Kroah-Hartman
2021-09-30 14:38       ` Michael S. Tsirkin
2021-09-30 14:38         ` Michael S. Tsirkin
2021-09-30 14:49         ` Greg Kroah-Hartman
2021-09-30 14:49           ` Greg Kroah-Hartman
2021-09-30 15:00           ` Michael S. Tsirkin
2021-09-30 15:00             ` Michael S. Tsirkin
2021-09-30 15:22             ` Greg Kroah-Hartman
2021-09-30 15:22               ` Greg Kroah-Hartman
2021-09-30 17:17               ` Andi Kleen
2021-09-30 17:17                 ` Andi Kleen
2021-09-30 17:23                 ` Greg Kroah-Hartman
2021-09-30 17:23                   ` Greg Kroah-Hartman
2021-09-30 19:15                   ` Andi Kleen
2021-09-30 19:15                     ` Andi Kleen
2021-10-01  6:29                     ` Greg Kroah-Hartman
2021-10-01  6:29                       ` Greg Kroah-Hartman
2021-10-01 15:51                       ` Alan Stern
2021-10-01 15:51                         ` Alan Stern
2021-10-01 15:56                         ` Andi Kleen
2021-10-01 15:56                           ` Andi Kleen
2021-09-30 14:43       ` Alan Stern
2021-09-30 14:43         ` Alan Stern
2021-09-30 14:48         ` Michael S. Tsirkin
2021-09-30 14:48           ` Michael S. Tsirkin
2021-09-30 15:32           ` Alan Stern
2021-09-30 15:32             ` Alan Stern
2021-09-30 15:52             ` Michael S. Tsirkin
2021-09-30 15:52               ` Michael S. Tsirkin
2021-09-30 14:58         ` Michael S. Tsirkin
2021-09-30 14:58           ` Michael S. Tsirkin
2021-09-30 15:35           ` Alan Stern
2021-09-30 15:35             ` Alan Stern
2021-09-30 15:59             ` Michael S. Tsirkin
2021-09-30 15:59               ` Michael S. Tsirkin
2021-09-30 19:23               ` Andi Kleen
2021-09-30 19:23                 ` Andi Kleen
2021-09-30 20:44                 ` Alan Stern
2021-09-30 20:44                   ` Alan Stern
2021-09-30 20:52                   ` Dan Williams
2021-09-30 20:52                     ` Dan Williams
2021-10-01  1:41                     ` Alan Stern
2021-10-01  1:41                       ` Alan Stern
2021-10-01  2:20                       ` Dan Williams
2021-10-01  2:20                         ` Dan Williams
2021-09-30 21:12                   ` Andi Kleen
2021-09-30 21:12                     ` Andi Kleen
2021-09-30  1:05 ` [PATCH v2 3/6] driver core: Allow arch to initialize the authorized attribute Kuppuswamy Sathyanarayanan
2021-09-30  1:05 ` [PATCH v2 4/6] virtio: Initialize authorized attribute for confidential guest Kuppuswamy Sathyanarayanan
2021-09-30 11:03   ` Michael S. Tsirkin
2021-09-30 11:03     ` Michael S. Tsirkin
2021-09-30 13:36     ` Dan Williams
2021-09-30 13:36       ` Dan Williams
2021-09-30 13:49       ` Greg Kroah-Hartman
2021-09-30 13:49         ` Greg Kroah-Hartman
2021-09-30 15:18       ` Kuppuswamy, Sathyanarayanan
2021-09-30 15:20         ` Michael S. Tsirkin
2021-09-30 15:20           ` Michael S. Tsirkin
2021-09-30 15:23           ` Kuppuswamy, Sathyanarayanan
2021-09-30 15:23         ` Greg Kroah-Hartman
2021-09-30 15:23           ` Greg Kroah-Hartman
2021-09-30 19:04           ` Kuppuswamy, Sathyanarayanan
2021-09-30 19:16             ` Kuppuswamy, Sathyanarayanan
2021-09-30 19:30             ` Andi Kleen
2021-09-30 19:30               ` Andi Kleen
2021-09-30 19:40               ` Kuppuswamy, Sathyanarayanan
2021-10-01  7:03             ` Greg Kroah-Hartman
2021-10-01  7:03               ` Greg Kroah-Hartman
2021-10-01 15:49               ` Andi Kleen
2021-10-01 15:49                 ` Andi Kleen
2021-10-02 11:04                 ` Michael S. Tsirkin
2021-10-02 11:04                   ` Michael S. Tsirkin
2021-10-02 11:14                   ` Greg Kroah-Hartman
2021-10-02 11:14                     ` Greg Kroah-Hartman
2021-10-02 14:20                     ` Andi Kleen
2021-10-02 14:20                       ` Andi Kleen
2021-10-02 14:44                       ` Greg Kroah-Hartman
2021-10-02 14:44                         ` Greg Kroah-Hartman
2021-10-02 18:40                       ` Michael S. Tsirkin
2021-10-02 18:40                         ` Michael S. Tsirkin
2021-10-03  6:40                         ` Greg Kroah-Hartman
2021-10-03  6:40                           ` Greg Kroah-Hartman
2021-10-04 21:04                       ` Dan Williams
2021-10-04 21:04                         ` Dan Williams
2021-10-01 16:13               ` Dan Williams
2021-10-01 16:13                 ` Dan Williams
2021-10-01 16:45                 ` Alan Stern
2021-10-01 16:45                   ` Alan Stern
2021-10-01 18:09                   ` Dan Williams
2021-10-01 18:09                     ` Dan Williams
2021-10-01 19:00                     ` Alan Stern
2021-10-01 19:00                       ` Alan Stern
2021-10-01 19:45                       ` Kuppuswamy, Sathyanarayanan
2021-10-01 19:57                       ` Dan Williams
2021-10-01 19:57                         ` Dan Williams
2021-10-04  5:16                         ` Mika Westerberg
2021-10-05 22:33                           ` Dan Williams
2021-10-05 22:33                             ` Dan Williams
2021-10-06  5:45                             ` Greg Kroah-Hartman
2021-10-06  5:45                               ` Greg Kroah-Hartman
2021-09-30 19:25         ` Andi Kleen
2021-09-30 19:25           ` Andi Kleen
2021-09-30  1:05 ` [PATCH v2 5/6] x86/tdx: Add device filter support for x86 TDX guest platform Kuppuswamy Sathyanarayanan
2021-09-30  1:05 ` [PATCH v2 6/6] PCI: Initialize authorized attribute for confidential guest Kuppuswamy Sathyanarayanan

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