linux-kernel - Re: [PATCH v3] omap: dmtimer: convert printk to pr

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Date:	Fri, 7 Oct 2011 10:22:43 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Víctor Manuel Jáquez Leal 
	<vjaquez@...lia.com>
Cc:	Tony Lindgren <tony@...mide.com>, linux-omap@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Joe Perches <joe@...ches.com>,
	Timo Teras <timo.teras@...idboot.com>
Subject: Re: [PATCH v3] omap: dmtimer: convert printk to pr_err

On Fri, Oct 07, 2011 at 10:50:16AM +0200, Víctor Manuel Jáquez Leal wrote:
> Convert a printk(KERN_ERR) message in the driver to pr_err().
...
> @@ -111,7 +111,7 @@ static void omap_dm_timer_wait_for_reset(struct omap_dm_timer *timer)
>  	while (!(__raw_readl(timer->sys_stat) & 1)) {
>  		c++;
>  		if (c > 100000) {
> -			printk(KERN_ERR "Timer failed to reset\n");
> +			pr_err("Timer failed to reset\n");

What is the reason behind this change?  It looks like it's to use the
latest and greatest function.

If so, please don't make these changes - we have on many occasions been
blamed for size of diffstat, churn, needless change, and this patch is
exactly that.

By all means fix printk's without KERN_ constants, possibly converting
them to pr_*, but don't go around replacing printk(KERN_* with pr_*(
without ensuring that there's a real benefit to the change.
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