linux-kernel - Re: [PATCH v4 0/5] add xhci-exynos driver

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Message-ID: <YmfHR2AQ5kH3k+XC@kroah.com>
Date:   Tue, 26 Apr 2022 12:19:51 +0200
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>, sc.suh@...sung.com,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Subject: Re: [PATCH v4 0/5] add xhci-exynos driver

On Tue, Apr 26, 2022 at 06:18:43PM +0900, Daehwan Jung wrote:
> This patchset is for Samsung Exynos xhci host conroller. It uses xhci-plat
> driver mainly and extends some functions by xhci hooks and overrides.
> 
> This driver supports USB offload 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 gives vendors flexibilty of memory management. This feature
> is done with xhci hooks and overrides.
> 
> Changes in v2 :
> - Fix commit message by adding Signed-off-by in each patch.
> - Fix conflict on latest.

Thanks for reworking these and submitting them.  I have some comments on
the individual commits from a non-xhci-knowledge point of view.

greg k-h