linux-kernel - Re: [PATCH] drivers/net/wan/wanxl.c: time_before(timeout, jiffies) -> jiffies, timeout

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Date:	Mon, 24 Mar 2008 15:42:38 +0100
From:	Krzysztof Halasa <khc@...waw.pl>
To:	Roel Kluin <12o3l@...cali.nl>
Cc:	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drivers/net/wan/wanxl.c: time_before(timeout, jiffies) -> jiffies, timeout

Hi,

Roel Kluin <12o3l@...cali.nl> writes:

> --- a/drivers/net/wan/wanxl.c
> +++ b/drivers/net/wan/wanxl.c
> @@ -650,7 +650,7 @@ static int __devinit wanxl_pci_init_one(struct pci_dev *pdev,
>  
>  	timeout = jiffies + 20 * HZ;
>  	while ((stat = readl(card->plx + PLX_MAILBOX_0)) != 0) {
> -		if (time_before(timeout, jiffies)) {
> +		if (time_before(jiffies, timeout)) {
>  			printk(KERN_WARNING "wanXL %s: timeout waiting for"
>  			       " PUTS to complete\n", pci_name(pdev));
>  			wanxl_pci_remove_one(pdev);
>

I can't see a bug here - time_before(timeout, jiffies) means "if
timeout is before jiffies", IOW if jiffies passed the timeout.

Perhaps time_after(jiffies, timeout) is a bit better equivalent, I
will use that.
-- 
Krzysztof Halasa
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