linux-kernel - Re: [PATCH 0/3] support USB offload feature

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Date:   Thu, 3 Feb 2022 08:21:25 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Daehwan Jung <dh10.jung@...sung.com>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        "open list:USB XHCI DRIVER" <linux-usb@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        Howard Yen <howardyen@...gle.com>,
        Jack Pham <jackp@...eaurora.org>,
        Puma Hsu <pumahsu@...gle.com>, "J . Avila" <elavila@...gle.com>
Subject: Re: [PATCH 0/3] support USB offload feature

On Thu, Feb 03, 2022 at 11:57:31AM +0900, Daehwan Jung wrote:
> This patchset is for USB offload feature, which makes Co-processor to use
> some memories of xhci. Especially it's useful for USB Audio scenario.
> Audio stream would get shortcut because Co-processor directly write/read
> data in xhci memories. It could get speed-up using faster memory like SRAM.
> That's why this also gives vendors flexibilty of memory management.
> Below pathches have been merged in AOSP kernel(android12-5.10) and I put
> together and split into 3 patches.
> 
> ANDROID: usb: host: fix slab-out-of-bounds in xhci_vendor_get_ops
> ANDROID: usb: export built-in tracepoint functions
> ANDROID: usb: host: Use old init scheme when hook unavailable
> ANDROID: usb: host: free the offload TR by vendor hook
> ANDROID: usb: host: xhci: provide function prototype for xhci_address_device
> ANDROID: usb: host: add bus_suspend/bus_resume to xhci overrides
> ANDROID: usb: host: add address_device to xhci overrides
> ANDROID: usb: host: add max packet parameter on alloc_transfer_ring hook
> ANDROID: usb: host: add xhci hooks for vendor specific container context
> ANDROID: usb: host: export xhci symbols for ring management
> ANDROID: usb: host: export additional xhci symbols for ring management
> FROMLIST: usb: xhci-plat: add xhci_plat_priv_overwrite
> FROMLIST: usb: host: export symbols for xhci hooks usage
> FROMLIST: usb: host: add xhci hooks for USB offload
> 
> Below are owners of patches.
> 
> Howard Yen <howardyen@...gle.com>
> Jack Pham <jackp@...eaurora.org>
> Puma Hsu <pumahsu@...gle.com>
> J. Avila <elavila@...gle.com>
> chihhao.chen <chihhao.chen@...iatek.com>)
> 
> Daehwan Jung (3):
>   usb: host: export symbols for xhci hooks usage
>   usb: host: add xhci hooks for USB offload
>   usb: host: add some to xhci overrides for USB offload

We need a user for these offload hooks, can you also submit them at the
same time?  Otherwise for obvious reaons, I can not take these without
any user.

thanks,

greg k-h