PHYLIB: Locking fixes for PHY I/O potentially sleeping

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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@xes-inc.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Nate Case 2008-01-29 10:05:09 -06:00 • committed by David S. Miller

parent 2b91213064

commit 35b5f6b1a8

4 changed files with 55 additions and 31 deletions

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2

drivers/net/phy/mdio_bus.c

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68

drivers/net/phy/phy.c

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11

drivers/net/phy/phy_device.c

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5

include/linux/phy.h

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