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| author | Hauke Mehrtens <hauke@hauke-m.de> | 2020-02-23 13:20:11 +0100 |
|---|---|---|
| committer | Koen Vandeputte <koen.vandeputte@ncentric.com> | 2020-02-28 17:50:45 +0100 |
| commit | c16517d26de30c90dabce1e456615fd7fbdce07c (patch) | |
| tree | e7371ee12a3c413a064885b634ee4c975ad7f96a /target/linux/generic/backport-5.4/728-v5.5-net-sfp-split-the-PHY-probe-from-sfp_sm_mod_init.patch | |
| parent | 955634b473284847e3c8281a6ac85655329d8b06 (diff) | |
| download | upstream-c16517d26de30c90dabce1e456615fd7fbdce07c.tar.gz upstream-c16517d26de30c90dabce1e456615fd7fbdce07c.tar.bz2 upstream-c16517d26de30c90dabce1e456615fd7fbdce07c.zip | |
kernel: copy kernel 4.19 code to 5.4
No changes were done to the patches while coping them. Currently they do
not apply on top of kernel 5.4.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Diffstat (limited to 'target/linux/generic/backport-5.4/728-v5.5-net-sfp-split-the-PHY-probe-from-sfp_sm_mod_init.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/728-v5.5-net-sfp-split-the-PHY-probe-from-sfp_sm_mod_init.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/728-v5.5-net-sfp-split-the-PHY-probe-from-sfp_sm_mod_init.patch b/target/linux/generic/backport-5.4/728-v5.5-net-sfp-split-the-PHY-probe-from-sfp_sm_mod_init.patch new file mode 100644 index 0000000000..7830b9268f --- /dev/null +++ b/target/linux/generic/backport-5.4/728-v5.5-net-sfp-split-the-PHY-probe-from-sfp_sm_mod_init.patch @@ -0,0 +1,53 @@ +From 5ed0bd49b2d3ac4439c2d7f44e5a82b7cf6f409a Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 18 Oct 2019 10:09:02 +0100 +Subject: [PATCH 626/660] net: sfp: split the PHY probe from sfp_sm_mod_init() + +Move the PHY probe into a separate function, splitting it from +sfp_sm_mod_init(). This will allow us to eliminate the 50ms mdelay() +inside the state machine. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 21 +++++++++++++-------- + 1 file changed, 13 insertions(+), 8 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -1288,14 +1288,10 @@ static void sfp_sm_fault(struct sfp *sfp + static void sfp_sm_mod_init(struct sfp *sfp) + { + sfp_module_tx_enable(sfp); ++} + +- /* Wait t_init before indicating that the link is up, provided the +- * current state indicates no TX_FAULT. If TX_FAULT clears before +- * this time, that's fine too. +- */ +- sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES); +- sfp->sm_retries = 5; +- ++static void sfp_sm_probe_for_phy(struct sfp *sfp) ++{ + /* Setting the serdes link mode is guesswork: there's no + * field in the EEPROM which indicates what mode should + * be used. +@@ -1580,8 +1576,17 @@ static void sfp_sm_main(struct sfp *sfp, + switch (sfp->sm_state) { + case SFP_S_DOWN: + if (sfp->sm_mod_state == SFP_MOD_PRESENT && +- sfp->sm_dev_state == SFP_DEV_UP) ++ sfp->sm_dev_state == SFP_DEV_UP) { + sfp_sm_mod_init(sfp); ++ sfp_sm_probe_for_phy(sfp); ++ ++ /* Wait t_init before indicating that the link is up, ++ * provided the current state indicates no TX_FAULT. If ++ * TX_FAULT clears before this time, that's fine too. ++ */ ++ sfp_sm_next(sfp, SFP_S_INIT, T_INIT_JIFFIES); ++ sfp->sm_retries = 5; ++ } + break; + + case SFP_S_INIT: |