Re: [PATCH] usb: xhci: tegra: Add shutdown callback for Tegra XUSB

Re: [PATCH] usb: xhci: tegra: Add shutdown callback for Tegra XUSB

[Thierry Reding]

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On Tue, Jul 18, 2023 at 03:20:57PM +0800, Haotien Hsu wrote:
> From: Henry Lin <henryl@nvidia.com>
> 
> If memory accesses by the Tegra XUSB controller are translated through
> the SMMU (System MMU), the hardware may continue accessing memory even
> after the SMMU translations have been disabled during the shutdown
> process and this can in turn cause unpredictable crashes.
> Fix this by adding a shutdown implementation that ensures the hardware
> is turned off during system reboot or shutdown.
> 
> Signed-off-by: Henry Lin <henryl@nvidia.com>
> Signed-off-by: Haotien Hsu <haotienh@nvidia.com>
> ---
>  drivers/usb/host/xhci-tegra.c | 28 +++++++++++++++++++++-------
>  1 file changed, 21 insertions(+), 7 deletions(-)

I just noticed that there's a typo in the linux-usb@vger.kernel.org
mailing list address, so you may want to resend this to make sure this
goes to the patch tracker and all.

Thierry

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