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path: root/drivers/net/sfc/efx.c
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Diffstat (limited to 'drivers/net/sfc/efx.c')
-rw-r--r--drivers/net/sfc/efx.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/sfc/efx.c b/drivers/net/sfc/efx.c
index c8871b2db38c..38a55e9e89e4 100644
--- a/drivers/net/sfc/efx.c
+++ b/drivers/net/sfc/efx.c
@@ -328,7 +328,8 @@ static int efx_poll(struct napi_struct *napi, int budget)
* processing to finish, then directly poll (and ack ) the eventq.
* Finally reenable NAPI and interrupts.
*
- * Since we are touching interrupts the caller should hold the suspend lock
+ * This is for use only during a loopback self-test. It must not
+ * deliver any packets up the stack as this can result in deadlock.
*/
void efx_process_channel_now(struct efx_channel *channel)
{
@@ -336,6 +337,7 @@ void efx_process_channel_now(struct efx_channel *channel)
BUG_ON(channel->channel >= efx->n_channels);
BUG_ON(!channel->enabled);
+ BUG_ON(!efx->loopback_selftest);
/* Disable interrupts and wait for ISRs to complete */
efx_nic_disable_interrupts(efx);
@@ -1436,7 +1438,7 @@ static void efx_start_all(struct efx_nic *efx)
* restart the transmit interface early so the watchdog timer stops */
efx_start_port(efx);
- if (efx_dev_registered(efx))
+ if (efx_dev_registered(efx) && !efx->port_inhibited)
netif_tx_wake_all_queues(efx->net_dev);
efx_for_each_channel(channel, efx)