From: Sukadev Bhattiprolu sukadev@linux.ibm.com
[ Upstream commit 6e20d00158f31f7631d68b86996b7e951c4451c8 ]
Soon after registering a CRQ it is possible that we get a fail over or maybe a CRQ_INIT from the VIOS while interrupts were disabled.
Look for any such CRQs after enabling interrupts.
Otherwise we can intermittently fail to bring up ibmvnic adapters during boot, specially in kexec/kdump kernels.
Fixes: 032c5e82847a ("Driver for IBM System i/p VNIC protocol") Reported-by: Vaishnavi Bhat vaish123@in.ibm.com Signed-off-by: Sukadev Bhattiprolu sukadev@linux.ibm.com Reviewed-by: Dany Madden drt@linux.ibm.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/ibm/ibmvnic.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c b/drivers/net/ethernet/ibm/ibmvnic.c index d97641b9928bb..c52c26fc44e59 100644 --- a/drivers/net/ethernet/ibm/ibmvnic.c +++ b/drivers/net/ethernet/ibm/ibmvnic.c @@ -4603,6 +4603,9 @@ static int init_crq_queue(struct ibmvnic_adapter *adapter) crq->cur = 0; spin_lock_init(&crq->lock);
+ /* process any CRQs that were queued before we enabled interrupts */ + tasklet_schedule(&adapter->tasklet); + return retrc;
req_irq_failed: