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

[Thierry Reding]

On Tue, Jul 18, 2023 at 03:20:57PM +0800, Haotien Hsu wrote:
> From: Henry Lin <henryl@xxxxxxxxxx>
> 
> 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@xxxxxxxxxx>
> Signed-off-by: Haotien Hsu <haotienh@xxxxxxxxxx>
> ---
>  drivers/usb/host/xhci-tegra.c | 28 +++++++++++++++++++++-------
>  1 file changed, 21 insertions(+), 7 deletions(-)

Acked-by: Thierry Reding <treding@xxxxxxxxxx>

Attachment: signature.asc
Description: PGP signature