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Message-ID: <ad877924-68bb-f029-258a-0cf9094265eb@kernel.org>
Date:   Tue, 22 Mar 2022 18:10:00 +0100
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Subject: Re: [PATCH v3 4/4] usb: host: add xhci-exynos driver
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To:     Daehwan Jung <dh10.jung@samsung.com>,
        Mathias Nyman <mathias.nyman@intel.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     "open list:USB XHCI DRIVER" <linux-usb@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>,
        Howard Yen <howardyen@google.com>,
        Jack Pham <jackp@codeaurora.org>,
        Puma Hsu <pumahsu@google.com>,
        "J . Avila" <elavila@google.com>, sc.suh@samsung.com
References: <1647853194-62147-1-git-send-email-dh10.jung@samsung.com>
 <CGME20220321090205epcas2p15ac16f281554b663062e0e31666defab@epcas2p1.samsung.com>
 <1647853194-62147-5-git-send-email-dh10.jung@samsung.com>
From:   Krzysztof Kozlowski <krzk@kernel.org>
In-Reply-To: <1647853194-62147-5-git-send-email-dh10.jung@samsung.com>
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On 21/03/2022 09:59, Daehwan Jung wrote:
> This driver supports USB Audio offload with Co-processor.

One do you need one more XHCI driver? How does it differ from existing
and why existing cannot be extended?

> It only cares DCBAA, Device Context, Transfer Ring, Event Ring, and ERST.
> They are allocated on specific address with xhci hooks.
> Co-processor could use them directly without xhci driver after then.
> 
> Signed-off-by: Daehwan Jung <dh10.jung@samsung.com>
> ---
>  drivers/usb/host/Kconfig       |   9 +
>  drivers/usb/host/Makefile      |   1 +
>  drivers/usb/host/xhci-exynos.c | 982 +++++++++++++++++++++++++++++++++
>  drivers/usb/host/xhci-exynos.h |  63 +++
>  4 files changed, 1055 insertions(+)
>  create mode 100644 drivers/usb/host/xhci-exynos.c
>  create mode 100644 drivers/usb/host/xhci-exynos.h
> 

Please address all the questions I raised in your v1, do not ignore them.

Please use get_maintainers.pl to CC all necessary people and lists. It
makes me very sad that you do not follow the kernel development process
(as mentioned in submitting-patches.rst and other documents).

Best regards,
Krzysztof