From: Santiago Leon <[EMAIL PROTECTED]>
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 <[EMAIL PROTECTED]>
---
drivers/net/ibmveth.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c
--- a/drivers/net/ibmveth.c
+++ b/drivers/net/ibmveth.c
@@ -527,6 +527,8 @@ static int ibmveth_open(struct net_devic
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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