2020-02-23 12:20:11 +00:00
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From 5ed0bd49b2d3ac4439c2d7f44e5a82b7cf6f409a Mon Sep 17 00:00:00 2001
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From: Russell King <rmk+kernel@armlinux.org.uk>
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Date: Fri, 18 Oct 2019 10:09:02 +0100
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Subject: [PATCH 626/660] net: sfp: split the PHY probe from sfp_sm_mod_init()
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Move the PHY probe into a separate function, splitting it from
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sfp_sm_mod_init(). This will allow us to eliminate the 50ms mdelay()
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inside the state machine.
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Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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---
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drivers/net/phy/sfp.c | 21 +++++++++++++--------
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1 file changed, 13 insertions(+), 8 deletions(-)
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--- a/drivers/net/phy/sfp.c
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+++ b/drivers/net/phy/sfp.c
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2019-11-25 15:08:31 +00:00
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@@ -1353,14 +1353,10 @@ static void sfp_sm_fault(struct sfp *sfp
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2020-02-23 12:20:11 +00:00
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static void sfp_sm_mod_init(struct sfp *sfp)
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{
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sfp_module_tx_enable(sfp);
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+}
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- /* Wait t_init before indicating that the link is up, provided the
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- * current state indicates no TX_FAULT. If TX_FAULT clears before
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- * this time, that's fine too.
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- */
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- sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES);
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- sfp->sm_retries = 5;
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-
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+static void sfp_sm_probe_for_phy(struct sfp *sfp)
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+{
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/* Setting the serdes link mode is guesswork: there's no
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* field in the EEPROM which indicates what mode should
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* be used.
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2019-11-25 15:08:31 +00:00
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@@ -1645,8 +1641,17 @@ static void sfp_sm_main(struct sfp *sfp,
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2020-02-23 12:20:11 +00:00
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switch (sfp->sm_state) {
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case SFP_S_DOWN:
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if (sfp->sm_mod_state == SFP_MOD_PRESENT &&
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- sfp->sm_dev_state == SFP_DEV_UP)
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+ sfp->sm_dev_state == SFP_DEV_UP) {
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sfp_sm_mod_init(sfp);
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+ sfp_sm_probe_for_phy(sfp);
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+
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+ /* Wait t_init before indicating that the link is up,
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+ * provided the current state indicates no TX_FAULT. If
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+ * TX_FAULT clears before this time, that's fine too.
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+ */
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+ sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES);
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+ sfp->sm_retries = 5;
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+ }
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break;
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case SFP_S_INIT:
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