linux-kernel - Re: [PATCH 09/15] staging: fbtft: fb_ssd1351.c: Introduce backlight_is

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Date:   Mon, 9 Jan 2023 13:13:00 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     sam@...nborg.org
Cc:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Helge Deller <deller@....de>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>,
        Antonino Daplas <adaplas@...il.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Robin van der Gracht <robin@...tonic.nl>,
        Miguel Ojeda <ojeda@...nel.org>, Lee Jones <lee@...nel.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>, linux-fbdev@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-omap@...r.kernel.org, linux-staging@...ts.linux.dev,
        linuxppc-dev@...ts.ozlabs.org, Stephen Kitt <steve@....org>
Subject: Re: [PATCH 09/15] staging: fbtft: fb_ssd1351.c: Introduce
 backlight_is_blank()

On Sat, Jan 07, 2023 at 07:26:23PM +0100, Sam Ravnborg via B4 Submission Endpoint wrote:
> From: Sam Ravnborg <sam@...nborg.org>
> 
> Avoiding direct access to backlight_properties.props.
> 
> Access to the deprecated props.fb_blank replaced by backlight_is_blank().
> Access to props.power is dropped - it was only used for debug.

> Signed-off-by: Sam Ravnborg <sam@...nborg.org>
> Cc: Stephen Kitt <steve@....org>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: Daniel Thompson <daniel.thompson@...aro.org>
> Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

> Cc: linux-fbdev@...r.kernel.org

Not sure why you have this (at least) explicitly mentioned as get_maintainer.pl
can generate it and git send-email can utilize the script output...

...

> -	write_reg(par, 0xB5, on ? 0x03 : 0x02);
> +	write_reg(par, 0xB5, !blank ? 0x03 : 0x02);

Why not positive conditional?

	write_reg(par, 0xB5, blank ? 0x02 : 0x03);

-- 
With Best Regards,
Andy Shevchenko