Re: [PATCH v3 4/4] usb: host: add xhci-exynos driver

Krzysztof Kozlowski
2022-03-22T17:10:07Z

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