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

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Message-Id: <6D762C47-9C9C-422E-A80E-CC418F624B05@freescale.com>
Date:	Mon, 28 Jan 2008 18:29:39 -0600
From:	Andy Fleming <afleming@...escale.com>
To:	Nate Case <ncase@...-inc.com>, Jeff Garzik <jeff@...zik.org>,
	"David S. Miller" <davem@...emloft.net>
Cc:	netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] PHYLIB: Locking fixes for PHY I/O potentially sleeping

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>


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