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From: Joe Perches <joe@perches.com>
To: "Manuel Schölling" <manuel.schoelling@gmx.de>
Cc: kevin.curtis@farsite.co.uk, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] wan: time_before()
Date: Sun, 25 May 2014 10:58:52 -0700	[thread overview]
Message-ID: <1401040732.22191.8.camel@joe-AO725> (raw)
In-Reply-To: <1401039163-10727-1-git-send-email-manuel.schoelling@gmx.de>

On Sun, 2014-05-25 at 19:32 +0200, Manuel Schölling wrote:
> To be future-proof and for better readability the time comparisons are
> modified to use time_before() instead of plain, error-prone math.

Sensible change, but it seems these should be
udelay(some_constant) instead of a a rather
variable time wait based on a system/config
defined jiffies.

Kevin?

> diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c
[]
> @@ -697,14 +697,14 @@ fst_cpureset(struct fst_card_info *card)
>  		 * We are delaying here to allow the 9054 to reset itself
>  		 */
>  		j = jiffies + 1;
> -		while (jiffies < j)
> +		while (time_before(jiffies, j))
>  			/* Do nothing */ ;
>  		outw(0x240f, card->pci_conf + CNTRL_9054 + 2);
>  		/*
>  		 * We are delaying here to allow the 9054 to reload its eeprom
>  		 */
>  		j = jiffies + 1;
> -		while (jiffies < j)
> +		while (time_before(jiffies, j))
>  			/* Do nothing */ ;
>  		outw(0x040f, card->pci_conf + CNTRL_9054 + 2);
>  



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  reply	other threads:[~2014-05-25 17:58 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-25 17:32 [PATCH] wan: time_before() Manuel Schölling
2014-05-25 17:58 ` Joe Perches [this message]
2014-05-26  4:40   ` David Miller
2014-05-28  7:09     ` Kevin Curtis
2014-05-31 15:07       ` [PATCH] wan: Use usleep_range() Manuel Schölling
2014-06-02  8:56         ` Kevin Curtis
2014-06-03  0:01         ` David Miller

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