linux-kernel - Re: [PATCH] usb: xhci: tegra: use time64

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Message-ID: <20171102161719.GA19015@ulmo>
Date:   Thu, 2 Nov 2017 17:17:19 +0100
From:   Thierry Reding <thierry.reding@...il.com>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        linux-usb@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: xhci: tegra: use time64_t for printing timestamp

On Thu, Nov 02, 2017 at 03:34:27PM +0100, Arnd Bergmann wrote:
> The time_t type and time_to_tm() function are deprecated because
> of y2038 problems. In this driver, they are used to pretty-print
> the timestamp of the firmware build. This is fine as long as
> we don't get a firmware build past 2038.
> 
> Converting to time64_t and time64_to_tm() avoids the deprecated
> interfaces and works until 2106, when the firmware-defined
> data structure overflows.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
>  drivers/usb/host/xhci-tegra.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Acked-by: Thierry Reding <treding@...dia.com>

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