PHY: Add the phy_device_release device method.
authorAnton Vorontsov <avorontsov@ru.mvista.com>
Tue, 4 Dec 2007 13:17:33 +0000 (16:17 +0300)
committerJeff Garzik <jeff@garzik.org>
Tue, 4 Dec 2007 20:06:33 +0000 (15:06 -0500)
commit6f4a7f4183bdbd02741dcd8edbd10b8628acc5d5
treeb160036cc645c4658c577a12b99902028a3885df
parentf9663aea2a938f9dc60dbfef34b9e7847a69c947
PHY: Add the phy_device_release device method.

Lately I've got this nice badness on mdio bus removal:

Device 'e0103120:06' does not have a release() function, it is broken and must be fixed.
------------[ cut here ]------------
Badness at drivers/base/core.c:107
NIP: c015c1a8 LR: c015c1a8 CTR: c0157488
REGS: c34bdcf0 TRAP: 0700   Not tainted  (2.6.23-rc5-g9ebadfbb-dirty)
MSR: 00029032 <EE,ME,IR,DR>  CR: 24088422  XER: 00000000
...
[c34bdda0] [c015c1a8] device_release+0x78/0x80 (unreliable)
[c34bddb0] [c01354cc] kobject_cleanup+0x80/0xbc
[c34bddd0] [c01365f0] kref_put+0x54/0x6c
[c34bdde0] [c013543c] kobject_put+0x24/0x34
[c34bddf0] [c015c384] put_device+0x1c/0x2c
[c34bde00] [c0180e84] mdiobus_unregister+0x2c/0x58
...

Though actually there is nothing broken, it just device
subsystem core expects another "pattern" of resource managment.

This patch implement phy device's release function, thus
we're getting rid of this badness.

Also small hidden bug fixed, hope none other introduced. ;-)

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Acked-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
drivers/net/phy/mdio_bus.c
drivers/net/phy/phy_device.c
include/linux/phy.h