linux-kernel - Re: [PATCH] Added backlight driver for Acer Aspire 4736

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Message-ID: <1331593676.13200.37.camel@joe2Laptop>
Date:	Mon, 12 Mar 2012 16:07:56 -0700
From:	Joe Perches <joe@...ches.com>
To:	Pradeep Subrahmanion <subrahmanion.pradeep@...il.com>
Cc:	rpurdie@...ys.net, FlorianSchandinat@....de,
	akpm@...ux-foundation.org, linux-fbdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Added backlight driver for Acer Aspire 4736

On Mon, 2012-03-12 at 23:12 -0400, Pradeep Subrahmanion wrote:
> Hi ,

Hello yourself.

Just some trivial comments:

> diff --git a/drivers/video/backlight/acer4736_bl.c b/drivers/video/backlight/acer4736_bl.c
[]
Please add
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
before any include

> +static int update_brightness(struct backlight_device *bd)
> +{
> +	u8 intensity = bd->props.brightness;
> +	if (intensity > max_brightness) {
> +		printk(KERN_INFO "Acer4736_bl: Invalid parameter. Maximum value is %d"
> +		, max_brightness);

Beginning a line with a comma is not at all common and
should be avoided.  printks need newline terminations,
and this would be better as pr_info.  Maybe:

		pr_info("Invalid parameter %u: Maximum allowed value: %u\n",
			intensity, max_brightness);

> +	printk(KERN_INFO "Loading Acer 4736 backlight driver\n");

	pr_info("Loading backlight driver\n");



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