lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20231101-diffused-iguana-f411619dc72a@spud>
Date:   Wed, 1 Nov 2023 10:38:00 +0000
From:   Conor Dooley <conor@...nel.org>
To:     Naveen Kumar <mnkumar@...gle.com>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, royluo@...gle.com,
        devicetree@...r.kernel.org
Subject: Re: [PATCH RESEND 2/2] dt-bindings: usb: add no-64-bit-support
 property

On Wed, Nov 01, 2023 at 10:16:25AM +0000, Naveen Kumar wrote:
> From: Naveen Kumar M <mnkumar@...gle.com>
> 
> Add a new DT option to specify whether a host controller is able to
> support 64-bit DMA memory pointers

What host controllers are broken?

> Signed-off-by: Naveen Kumar M <mnkumar@...gle.com>
> ---
>  Documentation/devicetree/bindings/usb/usb-xhci.yaml | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.yaml b/Documentation/devicetree/bindings/usb/usb-xhci.yaml
> index 180a261c3e8f..20dc134004f3 100644
> --- a/Documentation/devicetree/bindings/usb/usb-xhci.yaml
> +++ b/Documentation/devicetree/bindings/usb/usb-xhci.yaml
> @@ -25,6 +25,10 @@ properties:
>      description: Set if the controller has broken port disable mechanism
>      type: boolean
>  
> +  quirk-no-64-bit-support:
> +    description: Set if the xHC doesn't support 64-bit DMA memory pointers

To set this property, you need to know that the host controller is
broken, so why not just make the driver set the quirk once it sees that
the host controller is one of the broken ones?
Unless there are "sometimes broken" host controllers, a dedicated
property should not be needed, right?

> +    type: boolean
> +
>    imod-interval-ns:
>      description: Interrupt moderation interval
>      default: 5000
> -- 
> 2.42.0.820.g83a721a137-goog
> 

Download attachment "signature.asc" of type "application/pgp-signature" (229 bytes)

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ