From 1762a29ae5ebdd974eb2ba0c36b56ab6f7a9c16d Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Thu, 18 Dec 2008 08:23:26 +0000 Subject: 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 Signed-off-by: David S. Miller --- drivers/net/ucc_geth.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/ucc_geth.h') diff --git a/drivers/net/ucc_geth.h b/drivers/net/ucc_geth.h index abc0e224263..d74d2f7cb73 100644 --- a/drivers/net/ucc_geth.h +++ b/drivers/net/ucc_geth.h @@ -1186,6 +1186,7 @@ struct ucc_geth_private { struct ucc_fast_private *uccf; struct net_device *dev; struct napi_struct napi; + struct work_struct timeout_work; struct ucc_geth __iomem *ug_regs; struct ucc_geth_init_pram *p_init_enet_param_shadow; struct ucc_geth_exf_global_pram __iomem *p_exf_glbl_param; -- cgit v1.2.3