linux-kernel - Re: [PATCH] usb: gadget: tegra-xudc: Fix idle suspend/resume

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Message-ID: <20200506171349.GF2723987@ulmo>
Date:   Wed, 6 May 2020 19:13:49 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Jon Hunter <jonathanh@...dia.com>,
        Nagarjuna Kristam <nkristam@...dia.com>,
        linux-usb@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
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 <treding@...dia.com>
> 
> 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 <treding@...dia.com>
> ---
>  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?

Thanks,
Thierry

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