netdev - RE: [net v2 3/8] net/fsl_pq_mdio: Replace spin_event

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Message-ID: <063D6719AE5E284EB5DD2968C1650D6D174C5BAC@AcuExch.aculab.com>
Date:	Tue, 7 Oct 2014 08:12:42 +0000
From:	David Laight <David.Laight@...LAB.COM>
To:	'Claudiu Manoil' <claudiu.manoil@...escale.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:	"David S. Miller" <davem@...emloft.net>,
	Xiubo Li <Li.Xiubo@...escale.com>,
	Shruti Kanetkar <Shruti@...escale.com>,
	"Kim Phillips" <kim.phillips@...escale.com>
Subject: RE: [net v2 3/8] net/fsl_pq_mdio: Replace spin_event_timeout() with
 arch independent

From: netdev-owner@...r.kernel. 
> spin_event_timeout() is PPC dependent, use an arch independent
> equivalent instead.

I think you should white a local function/#define that expands to spin_event_timeout()
on ppc and to the code below you are substituting on other architectures.

>  	/* Wait for the transaction to finish */
> -	status = spin_event_timeout(!(ioread32be(&regs->miimind) &
> -				    MIIMIND_BUSY), MII_TIMEOUT, 0);
> +	timeout = MII_TIMEOUT;
> +	while ((ioread32be(&regs->miimind) & MIIMIND_BUSY) && timeout) {
> +		cpu_relax();
> +		timeout--;
> +	}

	David



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