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authorRussell King <rmk+kernel@armlinux.org.uk>2019-11-10 14:06:54 +0000
committerDavid S. Miller <davem@davemloft.net>2019-11-11 16:17:01 -0800
commit181f29da1582dec29f58ccd2a3dfbe917a1953cf (patch)
treeb0774795153a7e9bfd09b00044ad5889089bf49d /drivers/net/phy
parent8e210b6bdc2c91492735c9ff913e3cdf2161f8dc (diff)
net: sfp: split the PHY probe from sfp_sm_mod_init()
Move the PHY probe into a separate function, splitting it from sfp_sm_mod_init(). This will allow us to eliminate the 50ms mdelay() inside the state machine. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
-rw-r--r--drivers/net/phy/sfp.c21
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index e0bc060bb693..49919a75e338 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -1353,14 +1353,10 @@ static void sfp_sm_fault(struct sfp *sfp, bool warn)
static void sfp_sm_mod_init(struct sfp *sfp)
{
sfp_module_tx_enable(sfp);
+}
- /* Wait t_init before indicating that the link is up, provided the
- * current state indicates no TX_FAULT. If TX_FAULT clears before
- * this time, that's fine too.
- */
- sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES);
- sfp->sm_retries = 5;
-
+static void sfp_sm_probe_for_phy(struct sfp *sfp)
+{
/* Setting the serdes link mode is guesswork: there's no
* field in the EEPROM which indicates what mode should
* be used.
@@ -1645,8 +1641,17 @@ static void sfp_sm_main(struct sfp *sfp, unsigned int event)
switch (sfp->sm_state) {
case SFP_S_DOWN:
if (sfp->sm_mod_state == SFP_MOD_PRESENT &&
- sfp->sm_dev_state == SFP_DEV_UP)
+ sfp->sm_dev_state == SFP_DEV_UP) {
sfp_sm_mod_init(sfp);
+ sfp_sm_probe_for_phy(sfp);
+
+ /* Wait t_init before indicating that the link is up,
+ * provided the current state indicates no TX_FAULT. If
+ * TX_FAULT clears before this time, that's fine too.
+ */
+ sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES);
+ sfp->sm_retries = 5;
+ }
break;
case SFP_S_INIT: