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authorSantiago Leon <santil@us.ibm.com>2006-10-03 12:24:34 -0500
committerJeff Garzik <jeff@garzik.org>2006-10-05 06:43:23 -0400
commit4347ef15f76dca33ae8da769d6900a468253bda2 (patch)
treed4453425aa3fe5f066a2a742fb9eafd2571c2091
parent6b4223748895ed5b200c8049231567ea399fc0c2 (diff)
downloadop-kernel-dev-4347ef15f76dca33ae8da769d6900a468253bda2.zip
op-kernel-dev-4347ef15f76dca33ae8da769d6900a468253bda2.tar.gz
[PATCH] ibmveth: kdump interrupt fix
This patch fixes a race that panics the kernel when opening the device after a kdump. Without this patch there is a window where the hypervisor can send an interrupt before all the structures for the kdump ibmveth module are ready (because the hypervisor is not aware that the partition crashed and that the virtual driver is reloading). We close this window by disabling the interrupts before registering the adapter to the hypervisor. This patch depends on the "ibmveth: Harden driver initilisation" patch. Signed-off-by: Santiago Leon <santil@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/net/ibmveth.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c
index bd79d67..2ec49d2 100644
--- a/drivers/net/ibmveth.c
+++ b/drivers/net/ibmveth.c
@@ -527,6 +527,8 @@ static int ibmveth_open(struct net_device *netdev)
ibmveth_debug_printk("filter list @ 0x%p\n", adapter->filter_list_addr);
ibmveth_debug_printk("receive q @ 0x%p\n", adapter->rx_queue.queue_addr);
+ h_vio_signal(adapter->vdev->unit_address, VIO_IRQ_DISABLE);
+
lpar_rc = ibmveth_register_logical_lan(adapter, rxq_desc, mac_address);
if(lpar_rc != H_SUCCESS) {
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