From 5ed0bd49b2d3ac4439c2d7f44e5a82b7cf6f409a Mon Sep 17 00:00:00 2001 From: Russell King Date: Fri, 18 Oct 2019 10:09:02 +0100 Subject: [PATCH 626/660] 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 --- drivers/net/phy/sfp.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) --- a/drivers/net/phy/sfp.c +++ b/drivers/net/phy/sfp.c @@ -1353,14 +1353,10 @@ static void sfp_sm_fault(struct sfp *sfp 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, 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: