From a461103ba2e22cbb70771588b36f40df39a50f46 Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Thu, 24 Feb 2011 23:59:15 +0000
Subject: [PATCH] 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>
---
drivers/net/sfc/mdio_10g.c | 32 +++++---------------------------
drivers/net/sfc/mdio_10g.h | 3 +--
drivers/net/sfc/tenxpress.c | 2 +-
drivers/net/sfc/txc43128_phy.c | 2 +-
4 files changed, 8 insertions(+), 31 deletions(-)
diff --git a/drivers/net/sfc/mdio_10g.c b/drivers/net/sfc/mdio_10g.c
index 56b0266b441f..6e82e5ba583a 100644
--- 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 75791d3d4963..44c5dee52107 100644
--- 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 f102912eba91..581911f70441 100644
--- 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 351794a79215..4e2b48a8f5c4 100644
--- 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;
--
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