linux-kernel - Re: [PATCH v4] tty: samsung_tty: 32-bit access for TX/RX hold registers

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Date:   Fri, 3 Apr 2020 14:08:28 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Hyunki Koo <hyunki00.koo@...sung.com>,
        Kukjin Kim <kgene@...nel.org>, Jiri Slaby <jslaby@...e.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] tty: samsung_tty: 32-bit access for TX/RX hold
 registers

On Fri, Apr 03, 2020 at 01:57:15PM +0200, Greg KH wrote:
> > > If the property is not there, the type will be uninitialized and no
> > > warning will be spit out, are you sure you want to do that?
> > 
> > The default value from initial ourport will be used, which is UPIO_MEM.
> > This way it is backward compatible.
> 
> Where is iotype set to UPIO_MEM as a default?

Here:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/tty/serial/samsung_tty.c?h=v5.6#n1626
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/tty/serial/samsung_tty.c?h=v5.6#n1989

Best regards,
Krzysztof