* [PATCH] net: sfp: Add tx-fault quirk for Huawei MA5671A SFP ONT
@ 2022-04-30 12:48 Matthew Hagan
2022-05-02 18:37 ` Andrew Lunn
0 siblings, 1 reply; 3+ messages in thread
From: Matthew Hagan @ 2022-04-30 12:48 UTC (permalink / raw)
Cc: Matthew Hagan, Russell King, Andrew Lunn, Heiner Kallweit,
David S. Miller, Eric Dumazet, Jakub Kicinski, Paolo Abeni,
netdev, linux-kernel
As noted elsewhere [1], various GPON SFP modules exhibit non-standard
TX-fault behaviour. In the tested case, the Huawei MA5671A, when used in
combination with a Marvell 88E6393X switch, was found to persistently
assert TX-fault, resulting in the module being disabled.
This patch adds a quirk to ignore changes to the the SFP_F_TX_FAULT
state, thus allowing the module to function.
[1] https://lore.kernel.org/all/20200110114433.GZ25745@shell.armlinux.org.uk/
Signed-off-by: Matthew Hagan <mnhagan88@gmail.com>
---
drivers/net/phy/sfp.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c
index 4dfb79807823..11a20687b273 100644
--- a/drivers/net/phy/sfp.c
+++ b/drivers/net/phy/sfp.c
@@ -250,6 +250,7 @@ struct sfp {
struct sfp_eeprom_id id;
unsigned int module_power_mW;
unsigned int module_t_start_up;
+ bool tx_fault_ignore;
#if IS_ENABLED(CONFIG_HWMON)
struct sfp_diag diag;
@@ -1956,6 +1957,14 @@ static int sfp_sm_mod_probe(struct sfp *sfp, bool report)
else
sfp->module_t_start_up = T_START_UP;
+ if (!memcmp(id.base.vendor_name, "HUAWEI ", 16) &&
+ !memcmp(id.base.vendor_pn, "MA5671A ", 16))
+ sfp->tx_fault_ignore = true;
+ else
+ sfp->tx_fault_ignore = false;
+
+ return 0;
+
return 0;
}
@@ -2409,7 +2418,10 @@ static void sfp_check_state(struct sfp *sfp)
mutex_lock(&sfp->st_mutex);
state = sfp_get_state(sfp);
changed = state ^ sfp->state;
- changed &= SFP_F_PRESENT | SFP_F_LOS | SFP_F_TX_FAULT;
+ if (sfp->tx_fault_ignore)
+ changed &= SFP_F_PRESENT | SFP_F_LOS;
+ else
+ changed &= SFP_F_PRESENT | SFP_F_LOS | SFP_F_TX_FAULT;
for (i = 0; i < GPIO_MAX; i++)
if (changed & BIT(i))
--
2.27.0
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] net: sfp: Add tx-fault quirk for Huawei MA5671A SFP ONT
2022-04-30 12:48 [PATCH] net: sfp: Add tx-fault quirk for Huawei MA5671A SFP ONT Matthew Hagan
@ 2022-05-02 18:37 ` Andrew Lunn
2022-05-02 22:32 ` Matthew Hagan
0 siblings, 1 reply; 3+ messages in thread
From: Andrew Lunn @ 2022-05-02 18:37 UTC (permalink / raw)
To: Matthew Hagan
Cc: Russell King, Heiner Kallweit, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, netdev, linux-kernel
> + if (!memcmp(id.base.vendor_name, "HUAWEI ", 16) &&
> + !memcmp(id.base.vendor_pn, "MA5671A ", 16))
> + sfp->tx_fault_ignore = true;
> + else
> + sfp->tx_fault_ignore = false;
> +
> + return 0;
> +
> return 0;
Why do we need two return 0; Probably a merged conflict gone wrong.
Andrew
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] net: sfp: Add tx-fault quirk for Huawei MA5671A SFP ONT
2022-05-02 18:37 ` Andrew Lunn
@ 2022-05-02 22:32 ` Matthew Hagan
0 siblings, 0 replies; 3+ messages in thread
From: Matthew Hagan @ 2022-05-02 22:32 UTC (permalink / raw)
To: Andrew Lunn
Cc: Russell King, Heiner Kallweit, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, netdev, open list
On Mon, 2 May 2022 at 19:37, Andrew Lunn <andrew@lunn.ch> wrote:
>
> > + if (!memcmp(id.base.vendor_name, "HUAWEI ", 16) &&
> > + !memcmp(id.base.vendor_pn, "MA5671A ", 16))
> > + sfp->tx_fault_ignore = true;
> > + else
> > + sfp->tx_fault_ignore = false;
> > +
> > + return 0;
> > +
> > return 0;
>
> Why do we need two return 0; Probably a merged conflict gone wrong.
>
Apologies for the oversight. Will submit a v2 shortly.
> Andrew
Matthew
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-05-02 22:33 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-04-30 12:48 [PATCH] net: sfp: Add tx-fault quirk for Huawei MA5671A SFP ONT Matthew Hagan
2022-05-02 18:37 ` Andrew Lunn
2022-05-02 22:32 ` Matthew Hagan
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).