sfc: Add GFP flags to efx_nic_alloc_buffer() and make most callers allow blocking

Most call sites for efx_nic_alloc_buffer() are part of the probe or
reconfiguration paths and can allocate with GFP_KERNEL.  A few others
should use GFP_NOIO (I think).  Only one is in atomic context and
must use the current GFP_ATOMIC.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/ethernet/sfc/tx.c b/drivers/net/ethernet/sfc/tx.c
index 5e090e54298e..c0d40403db23 100644
--- a/drivers/net/ethernet/sfc/tx.c
+++ b/drivers/net/ethernet/sfc/tx.c
@@ -708,7 +708,8 @@ static u8 *efx_tsoh_get_buffer(struct efx_tx_queue *tx_queue,
                         TSOH_STD_SIZE * (index % TSOH_PER_PAGE) + TSOH_OFFSET;
 
                 if (unlikely(!page_buf->addr) &&
-                    efx_nic_alloc_buffer(tx_queue->efx, page_buf, PAGE_SIZE))
+                    efx_nic_alloc_buffer(tx_queue->efx, page_buf, PAGE_SIZE,
+                                         GFP_ATOMIC))
                         return NULL;
 
                 result = (u8 *)page_buf->addr + offset;