lede/target/linux/generic/backport-6.6/730-v6.7-net-sfp-re-implement-ignoring-the-hardware-TX_FAULT-.patch

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From e184e8609f8c1cd9fef703f667245b6ebd89c2ed Mon Sep 17 00:00:00 2001
From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
Date: Tue, 3 Oct 2023 14:34:24 +0100
Subject: [PATCH] net: sfp: re-implement ignoring the hardware TX_FAULT signal
Re-implement how we ignore the hardware TX_FAULT signal. Rather than
having a separate boolean for this, use a bitmask of the hardware
signals that we wish to ignore. This gives more flexibility in the
future to ignore other signals such as RX_LOS.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Tested-by: Christian Marangi <ansuelsmth@gmail.com>
Link: https://lore.kernel.org/r/E1qnfXc-008UDY-91@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
drivers/net/phy/sfp.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -257,6 +257,7 @@ struct sfp {
unsigned int state_hw_drive;
unsigned int state_hw_mask;
unsigned int state_soft_mask;
+ unsigned int state_ignore_mask;
unsigned int state;
struct delayed_work poll;
@@ -280,7 +281,6 @@ struct sfp {
unsigned int rs_state_mask;
bool have_a2;
- bool tx_fault_ignore;
const struct sfp_quirk *quirk;
@@ -347,7 +347,7 @@ static void sfp_fixup_long_startup(struc
static void sfp_fixup_ignore_tx_fault(struct sfp *sfp)
{
- sfp->tx_fault_ignore = true;
+ sfp->state_ignore_mask |= SFP_F_TX_FAULT;
}
// For 10GBASE-T short-reach modules
@@ -796,7 +796,8 @@ static void sfp_soft_start_poll(struct s
mutex_lock(&sfp->st_mutex);
// Poll the soft state for hardware pins we want to ignore
- sfp->state_soft_mask = ~sfp->state_hw_mask & mask;
+ sfp->state_soft_mask = ~sfp->state_hw_mask & ~sfp->state_ignore_mask &
+ mask;
if (sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT) &&
!sfp->need_poll)
@@ -2321,7 +2322,7 @@ static int sfp_sm_mod_probe(struct sfp *
sfp->module_t_start_up = T_START_UP;
sfp->module_t_wait = T_WAIT;
- sfp->tx_fault_ignore = false;
+ sfp->state_ignore_mask = 0;
if (sfp->id.base.extended_cc == SFF8024_ECC_10GBASE_T_SFI ||
sfp->id.base.extended_cc == SFF8024_ECC_10GBASE_T_SR ||
@@ -2344,6 +2345,8 @@ static int sfp_sm_mod_probe(struct sfp *
if (sfp->quirk && sfp->quirk->fixup)
sfp->quirk->fixup(sfp);
+
+ sfp->state_hw_mask &= ~sfp->state_ignore_mask;
mutex_unlock(&sfp->st_mutex);
return 0;
@@ -2844,10 +2847,7 @@ static void sfp_check_state(struct sfp *
mutex_lock(&sfp->st_mutex);
state = sfp_get_state(sfp);
changed = state ^ sfp->state;
- if (sfp->tx_fault_ignore)
- changed &= SFP_F_PRESENT | SFP_F_LOS;
- else
- changed &= SFP_F_PRESENT | SFP_F_LOS | SFP_F_TX_FAULT;
+ changed &= SFP_F_PRESENT | SFP_F_LOS | SFP_F_TX_FAULT;
for (i = 0; i < GPIO_MAX; i++)
if (changed & BIT(i))