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authorAnton Vorontsov <avorontsov@ru.mvista.com>2008-12-18 11:23:26 +0300
committerDavid S. Miller <davem@davemloft.net>2008-12-19 09:48:55 +0300
commit1762a29ae5ebdd974eb2ba0c36b56ab6f7a9c16d (patch)
treed78e6058cf6ba22d92ac593c64c0dcfaa9951577 /CREDITS
parentb3431c647662a3647f3500a12ec85d65e3622759 (diff)
downloadlinux-1762a29ae5ebdd974eb2ba0c36b56ab6f7a9c16d.tar.xz
ucc_geth: Fix TX watchdog timeout handling
The timeout handling code is currently broken in several ways: - It calls stop() (which frees all the memory and IRQ), and then calls startup() (which won't re-request IRQ, neither it will re-init the Fast UCC structure). - It calls these routines from the softirq context, which is wrong, since stop() calls free_irq() (which might sleep) and startup() allocates things with GFP_KERNEL. - It won't soft-reset the PHY. We need the PHY reset for at least MPC8360E-MDS boards with Marvell 88E1111 PHY, the PHY won't recover from timeouts w/o the reset. So the patch fixes these problems by implementing the workqueue for the timeout handling, and there we fully re-open the device via close() and open() calls. The close/open paths do the right things, and I can see that the driver actually survive the timeouts. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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