linux-kernel - RE: [PATCH v6 3/8] watchdog: hpe-wdt: Introduce HPE GXP Watchdog

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Message-ID: <PH0PR84MB1718D0238BEF9173AF5D5B7688C39@PH0PR84MB1718.NAMPRD84.PROD.OUTLOOK.COM>
Date:   Wed, 4 May 2022 16:25:59 +0000
From:   "Hawkins, Nick" <nick.hawkins@....com>
To:     Arnd Bergmann <arnd@...db.de>, Guenter Roeck <linux@...ck-us.net>
CC:     "Verdun, Jean-Marie" <verdun@....com>,
        "joel@....id.au" <joel@....id.au>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        "linux-watchdog@...r.kernel.org" <linux-watchdog@...r.kernel.org>
Subject: RE: [PATCH v6 3/8] watchdog: hpe-wdt: Introduce HPE GXP Watchdog


On Tue, May 3, 2022 at 6:53 PM Guenter Roeck <linux@...ck-us.net> wrote:

> > One bad deed tends to multiply.
> >
> > No, I didn't ask to pass a struct resource as platform data.
> > That would be no different to the current code. Resources can be added 
> > to a platform device using platform_device_add_resources(), and the 
> > platform driver can then use platform_get_resource() to use it. This 
> > would make it independent of a "private" mechanism.

> Unfortunately there is no resource type for __iomem tokens, only for physical addresses, so you'd end up having to do
ioremap() of the same address twice to map it into both the timer and the watchdog driver . Not the end of the world of course, but that doesn't seem much better than abusing the device private data.

Hello Guenter,

Given Arnd's feedback would you like me to proceed with this change still or do you have another recommendation?

Thanks,

-Nick Hawkins