Commit 3dca9d2d authored by Stuart Hodgson's avatar Stuart Hodgson Committed by Ben Hutchings
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sfc: Do not attempt to flush queues if DMA is disabled

efx_nic_fatal_interrupt() disables DMA before scheduling a reset.
After this, we need not and *cannot* flush queues.
Signed-off-by: default avatarBen Hutchings <>
parent 2e7d21c5
......@@ -656,12 +656,16 @@ static void efx_stop_datapath(struct efx_nic *efx)
struct efx_channel *channel;
struct efx_tx_queue *tx_queue;
struct efx_rx_queue *rx_queue;
struct pci_dev *dev = efx->pci_dev;
int rc;
/* Only perform flush if dma is enabled */
if (dev->is_busmaster) {
rc = efx_nic_flush_queues(efx);
if (rc && EFX_WORKAROUND_7803(efx)) {
/* Schedule a reset to recover from the flush failure. The
* descriptor caches reference memory we're about to free,
......@@ -676,6 +680,7 @@ static void efx_stop_datapath(struct efx_nic *efx)
netif_dbg(efx, drv, efx->net_dev,
"successfully flushed all queues\n");
efx_for_each_channel(channel, efx) {
/* RX packet processing is pipelined, so wait for the
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