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[v5,net-next,07/16] sfc_ef100: don't call efx_reset_down()/up() on EF100

Message ID be765dac-1a2c-1927-e355-76ea40a11607@solarflare.com
State Accepted
Delegated to: David Miller
Headers show
Series sfc: driver for EF100 family NICs, part 1 | expand

Commit Message

Edward Cree July 27, 2020, 11:56 a.m. UTC
We handle everything ourselves in ef100_reset(), rather than relying on
 the generic down/up routines.

Signed-off-by: Edward Cree <ecree@solarflare.com>
---
 drivers/net/ethernet/sfc/efx_common.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)
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Patch

diff --git a/drivers/net/ethernet/sfc/efx_common.c b/drivers/net/ethernet/sfc/efx_common.c
index 5667694c6514..26b05ec4e712 100644
--- a/drivers/net/ethernet/sfc/efx_common.c
+++ b/drivers/net/ethernet/sfc/efx_common.c
@@ -814,14 +814,18 @@  int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok)
  */
 int efx_reset(struct efx_nic *efx, enum reset_type method)
 {
+	int rc, rc2 = 0;
 	bool disabled;
-	int rc, rc2;
 
 	netif_info(efx, drv, efx->net_dev, "resetting (%s)\n",
 		   RESET_TYPE(method));
 
 	efx_device_detach_sync(efx);
-	efx_reset_down(efx, method);
+	/* efx_reset_down() grabs locks that prevent recovery on EF100.
+	 * EF100 reset is handled in the efx_nic_type callback below.
+	 */
+	if (efx_nic_rev(efx) != EFX_REV_EF100)
+		efx_reset_down(efx, method);
 
 	rc = efx->type->reset(efx, method);
 	if (rc) {
@@ -849,7 +853,8 @@  int efx_reset(struct efx_nic *efx, enum reset_type method)
 	disabled = rc ||
 		method == RESET_TYPE_DISABLE ||
 		method == RESET_TYPE_RECOVER_OR_DISABLE;
-	rc2 = efx_reset_up(efx, method, !disabled);
+	if (efx_nic_rev(efx) != EFX_REV_EF100)
+		rc2 = efx_reset_up(efx, method, !disabled);
 	if (rc2) {
 		disabled = true;
 		if (!rc)