diff options
Diffstat (limited to 'target/linux/generic/pending-5.4/756-net-sfp-use-a-definition-for-the-fault-recovery-atte.patch')
| -rw-r--r-- | target/linux/generic/pending-5.4/756-net-sfp-use-a-definition-for-the-fault-recovery-atte.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/target/linux/generic/pending-5.4/756-net-sfp-use-a-definition-for-the-fault-recovery-atte.patch b/target/linux/generic/pending-5.4/756-net-sfp-use-a-definition-for-the-fault-recovery-atte.patch new file mode 100644 index 0000000000..8362f73f46 --- /dev/null +++ b/target/linux/generic/pending-5.4/756-net-sfp-use-a-definition-for-the-fault-recovery-atte.patch @@ -0,0 +1,55 @@ +From 4d6bfb6fbb00af38402db4d1ce464e22def9fd9e Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Thu, 28 Nov 2019 14:24:40 +0000 +Subject: [PATCH 1/4] net: sfp: use a definition for the fault recovery + attempts + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 14 +++++++++++--- + 1 file changed, 11 insertions(+), 3 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -170,6 +170,14 @@ static const enum gpiod_flags gpio_flags + #define T_RESET_US 10 + #define T_FAULT_RECOVER msecs_to_jiffies(1000) + ++/* N_FAULT_INIT is the number of recovery attempts at module initialisation ++ * time. If the TX_FAULT signal is not deasserted after this number of ++ * attempts at clearing it, we decide that the module is faulty. ++ * N_FAULT is the same but after the module has initialised. ++ */ ++#define N_FAULT_INIT 5 ++#define N_FAULT 5 ++ + /* SFP module presence detection is poor: the three MOD DEF signals are + * the same length on the PCB, which means it's possible for MOD DEF 0 to + * connect before the I2C bus on MOD DEF 1/2. +@@ -1820,7 +1828,7 @@ static void sfp_sm_main(struct sfp *sfp, + sfp_module_tx_enable(sfp); + + /* Initialise the fault clearance retries */ +- sfp->sm_retries = 5; ++ sfp->sm_retries = N_FAULT_INIT; + + /* We need to check the TX_FAULT state, which is not defined + * while TX_DISABLE is asserted. The earliest we want to do +@@ -1860,7 +1868,7 @@ static void sfp_sm_main(struct sfp *sfp, + * or t_start_up, so assume there is a fault. + */ + sfp_sm_fault(sfp, SFP_S_INIT_TX_FAULT, +- sfp->sm_retries == 5); ++ sfp->sm_retries == N_FAULT_INIT); + } 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. +@@ -1873,7 +1881,7 @@ static void sfp_sm_main(struct sfp *sfp, + sfp_sm_link_check_los(sfp); + + /* Reset the fault retry count */ +- sfp->sm_retries = 5; ++ sfp->sm_retries = N_FAULT; + } + break; + |