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
--- a/drivers/net/sfc/mdio_10g.c
+++ b/drivers/net/sfc/mdio_10g.c
@@ -51,13 +51,10 @@
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 @@
}
}
- /* 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 @@
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 @@
/* 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 @@
"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);