diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/731-v5.5-net-sfp-ensure-TX_FAULT-has-deasserted-before-probin.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/731-v5.5-net-sfp-ensure-TX_FAULT-has-deasserted-before-probin.patch | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/target/linux/generic/backport-5.4/731-v5.5-net-sfp-ensure-TX_FAULT-has-deasserted-before-probin.patch b/target/linux/generic/backport-5.4/731-v5.5-net-sfp-ensure-TX_FAULT-has-deasserted-before-probin.patch deleted file mode 100644 index acca29be87..0000000000 --- a/target/linux/generic/backport-5.4/731-v5.5-net-sfp-ensure-TX_FAULT-has-deasserted-before-probin.patch +++ /dev/null @@ -1,80 +0,0 @@ -From 38b62a12231be4b86fc5ca5477579d29831c02a5 Mon Sep 17 00:00:00 2001 -From: Russell King <rmk+kernel@armlinux.org.uk> -Date: Fri, 18 Oct 2019 10:31:07 +0100 -Subject: [PATCH 629/660] net: sfp: ensure TX_FAULT has deasserted before - probing the PHY - -TX_FAULT should be deasserted to indicate that the module has completed -its initialisation. This may include the on-board PHY, so wait until -the module has deasserted TX_FAULT before probing the PHY. - -This means that we need an extra state to handle a TX_FAULT that -remains set for longer than t_init, since using the existing handling -state would bypass the PHY probe. - -Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> ---- - drivers/net/phy/sfp.c | 31 +++++++++++++++++++++++++------ - 1 file changed, 25 insertions(+), 6 deletions(-) - ---- a/drivers/net/phy/sfp.c -+++ b/drivers/net/phy/sfp.c -@@ -56,6 +56,7 @@ enum { - SFP_S_DOWN = 0, - SFP_S_WAIT, - SFP_S_INIT, -+ SFP_S_INIT_TX_FAULT, - SFP_S_WAIT_LOS, - SFP_S_LINK_UP, - SFP_S_TX_FAULT, -@@ -113,6 +114,7 @@ static const char * const sm_state_strin - [SFP_S_DOWN] = "down", - [SFP_S_WAIT] = "wait", - [SFP_S_INIT] = "init", -+ [SFP_S_INIT_TX_FAULT] = "init_tx_fault", - [SFP_S_WAIT_LOS] = "wait_los", - [SFP_S_LINK_UP] = "link_up", - [SFP_S_TX_FAULT] = "tx_fault", -@@ -1660,8 +1662,6 @@ static void sfp_sm_main(struct sfp *sfp, - if (event != SFP_E_TIMEOUT) - break; - -- sfp_sm_probe_for_phy(sfp); -- - if (sfp->state & SFP_F_TX_FAULT) { - /* Wait t_init before indicating that the link is up, - * provided the current state indicates no TX_FAULT. If -@@ -1683,10 +1683,29 @@ static void sfp_sm_main(struct sfp *sfp, - break; - - case SFP_S_INIT: -- if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) -- sfp_sm_fault(sfp, SFP_S_TX_FAULT, true); -- else if (event == SFP_E_TIMEOUT || event == SFP_E_TX_CLEAR) -- init_done: sfp_sm_link_check_los(sfp); -+ if (event == SFP_E_TIMEOUT && sfp->state & SFP_F_TX_FAULT) { -+ /* TX_FAULT is still asserted after t_init, so assume -+ * there is a fault. -+ */ -+ sfp_sm_fault(sfp, SFP_S_INIT_TX_FAULT, -+ sfp->sm_retries == 5); -+ } else if (event == SFP_E_TIMEOUT || event == SFP_E_TX_CLEAR) { -+ init_done: /* TX_FAULT deasserted or we timed out with TX_FAULT -+ * clear. Probe for the PHY and check the LOS state. -+ */ -+ sfp_sm_probe_for_phy(sfp); -+ sfp_sm_link_check_los(sfp); -+ -+ /* Reset the fault retry count */ -+ sfp->sm_retries = 5; -+ } -+ break; -+ -+ case SFP_S_INIT_TX_FAULT: -+ if (event == SFP_E_TIMEOUT) { -+ sfp_module_tx_fault_reset(sfp); -+ sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES); -+ } - break; - - case SFP_S_WAIT_LOS: |