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Date:   Wed, 6 May 2020 19:13:49 +0200
From:   Thierry Reding <>
To:     Felipe Balbi <>,
        Greg Kroah-Hartman <>
Cc:     Jon Hunter <>,
        Nagarjuna Kristam <>,,,
Subject: Re: [PATCH] usb: gadget: tegra-xudc: Fix idle suspend/resume

On Fri, Apr 17, 2020 at 07:05:37PM +0200, Thierry Reding wrote:
> From: Thierry Reding <>
> When the XUDC device is idle (i.e. powergated), care must be taken not
> to access any registers because that would lead to a crash.
> Move the call to tegra_xudc_device_mode_off() into the same conditional
> as the tegra_xudc_powergate() call to make sure we only force device
> mode off if the XUDC is actually powered up.
> Fixes: 49db427232fe ("usb: gadget: Add UDC driver for tegra XUSB device mode controller")
> Signed-off-by: Thierry Reding <>
> ---
>  drivers/usb/gadget/udc/tegra-xudc.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

Hi Felipe, Greg,

can you guys pick this up for v5.7, please?


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