linux-kernel - Re: [PATCH v2] watchdog: ebc-c384

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Message-ID: <ZBCX0iVwYD4uVxwM@smile.fi.intel.com>
Date:   Tue, 14 Mar 2023 17:50:42 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     William Breathitt Gray <william.gray@...aro.org>
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org,
        Paul Demetrotion <pdemetrotion@...systems.com>,
        techsupport@...systems.com
Subject: Re: [PATCH v2] watchdog: ebc-c384_wdt: Migrate to the regmap API

On Tue, Mar 14, 2023 at 11:29:16AM -0400, William Breathitt Gray wrote:
> The regmap API supports IO port accessors so we can take advantage of
> regmap abstractions rather than handling access to the device registers
> directly in the driver.

...

>  - Utilize watchdog_set_drvdata() and watchdog_get_drvdata()

I'm wondering why you can't use dev_get_regmap() instead.

>  - Map watchdog control registers based on offset 0x1 and adjust regmap
>    configurations accordingly; offset 0x0 is unused in this driver so we
>    should avoid unnecessary exposure of it

I'm wondering what bad could happen if you expose it.

-- 
With Best Regards,
Andy Shevchenko