[netdrvr] sfc: Add phy_flash_cfg module parameter and implementation

The 10Xpress PHY supports flash upgrades through MDIO, but needs to be
put in upgrade mode at power-up.  This adds a module parameter and other
logic to support that.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c
index a2e9f79e47b1..d8df031c711d 100644
--- a/drivers/net/sfc/tenxpress.c
+++ b/drivers/net/sfc/tenxpress.c
@@ -199,10 +199,12 @@ static int tenxpress_phy_init(struct efx_nic *efx)
 
         tenxpress_set_state(efx, TENXPRESS_STATUS_NORMAL);
 
-        rc = mdio_clause45_wait_reset_mmds(efx,
-                                           TENXPRESS_REQUIRED_DEVS);
-        if (rc < 0)
-                goto fail;
+        if (!sfe4001_phy_flash_cfg) {
+                rc = mdio_clause45_wait_reset_mmds(efx,
+                                                   TENXPRESS_REQUIRED_DEVS);
+                if (rc < 0)
+                        goto fail;
+        }
 
         rc = mdio_clause45_check_mmds(efx, TENXPRESS_REQUIRED_DEVS, 0);
         if (rc < 0)