sfc: Do not read STAT1.FAULT in efx_mdio_check_mmd()

This field does not exist in all MMDs we want to check, and all
callers allow it to be set (fault_fatal = 0).

Remove the loopback condition, as STAT2.DEVPRST should be valid
regardless of any fault.

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

diff --git a/drivers/net/sfc/mdio_10g.c b/drivers/net/sfc/mdio_10g.c
index 56b0266..6e82e5b 100644 (file)
--- a/drivers/net/sfc/mdio_10g.c
+++ b/drivers/net/sfc/mdio_10g.c
@@ -51,13 +51,10 @@ int efx_mdio_reset_mmd(struct efx_nic *port, int mmd,
        return spins ? spins : -ETIMEDOUT;
 }
 
-static int efx_mdio_check_mmd(struct efx_nic *efx, int mmd, int fault_fatal)
+static int efx_mdio_check_mmd(struct efx_nic *efx, int mmd)
 {
        int status;
 
-       if (LOOPBACK_INTERNAL(efx))
-               return 0;
-
        if (mmd != MDIO_MMD_AN) {
                /* Read MMD STATUS2 to check it is responding. */
                status = efx_mdio_read(efx, mmd, MDIO_STAT2);
@@ -68,20 +65,6 @@ static int efx_mdio_check_mmd(struct efx_nic *efx, int mmd, int fault_fatal)
                }
        }
 
-       /* Read MMD STATUS 1 to check for fault. */
-       status = efx_mdio_read(efx, mmd, MDIO_STAT1);
-       if (status & MDIO_STAT1_FAULT) {
-               if (fault_fatal) {
-                       netif_err(efx, hw, efx->net_dev,
-                                 "PHY MMD %d reporting fatal"
-                                 " fault: status %x\n", mmd, status);
-                       return -EIO;
-               } else {
-                       netif_dbg(efx, hw, efx->net_dev,
-                                 "PHY MMD %d reporting status"
-                                 " %x (expected)\n", mmd, status);
-               }
-       }
        return 0;
 }
 
@@ -130,8 +113,7 @@ int efx_mdio_wait_reset_mmds(struct efx_nic *efx, unsigned int mmd_mask)
        return rc;
 }
 
-int efx_mdio_check_mmds(struct efx_nic *efx,
-                       unsigned int mmd_mask, unsigned int fatal_mask)
+int efx_mdio_check_mmds(struct efx_nic *efx, unsigned int mmd_mask)
 {
        int mmd = 0, probe_mmd, devs1, devs2;
        u32 devices;
@@ -161,13 +143,9 @@ int efx_mdio_check_mmds(struct efx_nic *efx,
 
        /* Check all required MMDs are responding and happy. */
        while (mmd_mask) {
-               if (mmd_mask & 1) {
-                       int fault_fatal = fatal_mask & 1;
-                       if (efx_mdio_check_mmd(efx, mmd, fault_fatal))
-                               return -EIO;
-               }
+               if ((mmd_mask & 1) && efx_mdio_check_mmd(efx, mmd))
+                       return -EIO;
                mmd_mask = mmd_mask >> 1;
-               fatal_mask = fatal_mask >> 1;
                mmd++;
        }
 
@@ -337,7 +315,7 @@ int efx_mdio_test_alive(struct efx_nic *efx)
                          "no MDIO PHY present with ID %d\n", efx->mdio.prtad);
                rc = -EINVAL;
        } else {
-               rc = efx_mdio_check_mmds(efx, efx->mdio.mmds, 0);
+               rc = efx_mdio_check_mmds(efx, efx->mdio.mmds);
        }
 
        mutex_unlock(&efx->mac_lock);

diff --git a/drivers/net/sfc/mdio_10g.h b/drivers/net/sfc/mdio_10g.h
index 75791d3..44c5dee 100644 (file)
--- a/drivers/net/sfc/mdio_10g.h
+++ b/drivers/net/sfc/mdio_10g.h
@@ -68,8 +68,7 @@ extern int efx_mdio_reset_mmd(struct efx_nic *efx, int mmd,
                              int spins, int spintime);
 
 /* As efx_mdio_check_mmd but for multiple MMDs */
-int efx_mdio_check_mmds(struct efx_nic *efx,
-                       unsigned int mmd_mask, unsigned int fatal_mask);
+int efx_mdio_check_mmds(struct efx_nic *efx, unsigned int mmd_mask);
 
 /* Check the link status of specified mmds in bit mask */
 extern bool efx_mdio_links_ok(struct efx_nic *efx, unsigned int mmd_mask);

diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c
index f102912..581911f 100644 (file)
--- a/drivers/net/sfc/tenxpress.c
+++ b/drivers/net/sfc/tenxpress.c
@@ -196,7 +196,7 @@ static int tenxpress_phy_init(struct efx_nic *efx)
                if (rc < 0)
                        return rc;
 
-               rc = efx_mdio_check_mmds(efx, TENXPRESS_REQUIRED_DEVS, 0);
+               rc = efx_mdio_check_mmds(efx, TENXPRESS_REQUIRED_DEVS);
                if (rc < 0)
                        return rc;
        }

diff --git a/drivers/net/sfc/txc43128_phy.c b/drivers/net/sfc/txc43128_phy.c
index 351794a..4e2b48a 100644 (file)
--- a/drivers/net/sfc/txc43128_phy.c
+++ b/drivers/net/sfc/txc43128_phy.c
@@ -193,7 +193,7 @@ static int txc_reset_phy(struct efx_nic *efx)
                goto fail;
 
        /* Check that all the MMDs we expect are present and responding. */
-       rc = efx_mdio_check_mmds(efx, TXC_REQUIRED_DEVS, 0);
+       rc = efx_mdio_check_mmds(efx, TXC_REQUIRED_DEVS);
        if (rc < 0)
                goto fail;