netdev - Re: [PATCH] PHYLIB: Locking fixes for PHY I/O potentially sleeping

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Message-ID: <479E76A2.8020304@garzik.org>
Date:	Mon, 28 Jan 2008 19:43:14 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Andy Fleming <afleming@...escale.com>
CC:	Nate Case <ncase@...-inc.com>,
	"David S. Miller" <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] PHYLIB: Locking fixes for PHY I/O potentially sleeping

Andy Fleming wrote:
> Jeff, Dave, any chance we can get this one in for 2.6.25?  It will allow 
> a number of other drivers to start using PHY Lib.
> I'm sure Nate can resend if needed.
> 
> On Jan 3, 2008, at 17:36, Nate Case wrote:
> 
>> PHY read/write functions can potentially sleep (e.g., a PHY accessed
>> via I2C).  The following changes were made to account for this:
>>
>>     * Change spin locks to mutex locks
>>     * Add a BUG_ON() to phy_read() phy_write() to warn against
>>       calling them from an interrupt context.
>>     * Use work queue for PHY state machine handling since
>>       it can potentially sleep
>>     * Change phydev lock from spinlock to mutex
>>
>> Signed-off-by: Nate Case <ncase@...-inc.com>

don't see it in my queue, so please resend.


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