From c16517d26de30c90dabce1e456615fd7fbdce07c Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sun, 23 Feb 2020 13:20:11 +0100 Subject: 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 --- .../758-net-sfp-error-handling-for-phy-probe.patch | 97 ++++++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100644 target/linux/generic/pending-5.4/758-net-sfp-error-handling-for-phy-probe.patch (limited to 'target/linux/generic/pending-5.4/758-net-sfp-error-handling-for-phy-probe.patch') diff --git a/target/linux/generic/pending-5.4/758-net-sfp-error-handling-for-phy-probe.patch b/target/linux/generic/pending-5.4/758-net-sfp-error-handling-for-phy-probe.patch new file mode 100644 index 0000000000..8191e622a1 --- /dev/null +++ b/target/linux/generic/pending-5.4/758-net-sfp-error-handling-for-phy-probe.patch @@ -0,0 +1,97 @@ +From 1fba543dc8edf4a43bff3276306648bb27c1e207 Mon Sep 17 00:00:00 2001 +From: Russell King +Date: Fri, 29 Nov 2019 00:30:08 +0000 +Subject: [PATCH 3/4] net: sfp: error handling for phy probe + +Signed-off-by: Russell King +--- + drivers/net/phy/sfp.c | 26 +++++++++++++++++--------- + 1 file changed, 17 insertions(+), 9 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -1345,7 +1345,7 @@ static void sfp_sm_phy_detach(struct sfp + sfp->mod_phy = NULL; + } + +-static void sfp_sm_probe_phy(struct sfp *sfp, bool is_c45) ++static int sfp_sm_probe_phy(struct sfp *sfp, bool is_c45) + { + struct phy_device *phy; + int err; +@@ -1353,18 +1353,18 @@ static void sfp_sm_probe_phy(struct sfp + phy = get_phy_device(sfp->i2c_mii, SFP_PHY_ADDR, is_c45); + if (phy == ERR_PTR(-ENODEV)) { + dev_info(sfp->dev, "no PHY detected\n"); +- return; ++ return 0; + } + if (IS_ERR(phy)) { + dev_err(sfp->dev, "mdiobus scan returned %ld\n", PTR_ERR(phy)); +- return; ++ return PTR_ERR(phy); + } + + err = phy_device_register(phy); + if (err) { + phy_device_free(phy); + dev_err(sfp->dev, "phy_device_register failed: %d\n", err); +- return; ++ return err; + } + + err = sfp_add_phy(sfp->sfp_bus, phy); +@@ -1372,10 +1372,12 @@ static void sfp_sm_probe_phy(struct sfp + phy_device_remove(phy); + phy_device_free(phy); + dev_err(sfp->dev, "sfp_add_phy failed: %d\n", err); +- return; ++ return err; + } + + sfp->mod_phy = phy; ++ ++ return 0; + } + + static void sfp_sm_link_up(struct sfp *sfp) +@@ -1448,21 +1450,24 @@ static void sfp_sm_fault(struct sfp *sfp + * Clause 45 copper SFP+ modules (10G) appear to switch their interface + * mode according to the negotiated line speed. + */ +-static void sfp_sm_probe_for_phy(struct sfp *sfp) ++static int sfp_sm_probe_for_phy(struct sfp *sfp) + { ++ int err = 0; ++ + switch (sfp->id.base.extended_cc) { + case SFF8024_ECC_10GBASE_T_SFI: + case SFF8024_ECC_10GBASE_T_SR: + case SFF8024_ECC_5GBASE_T: + case SFF8024_ECC_2_5GBASE_T: +- sfp_sm_probe_phy(sfp, true); ++ err = sfp_sm_probe_phy(sfp, true); + break; + + default: + if (sfp->id.base.e1000_base_t) +- sfp_sm_probe_phy(sfp, false); ++ err = sfp_sm_probe_phy(sfp, false); + break; + } ++ return err; + } + + static int sfp_module_parse_power(struct sfp *sfp) +@@ -1873,7 +1878,10 @@ static void sfp_sm_main(struct sfp *sfp, + 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); ++ if (sfp_sm_probe_for_phy(sfp)) { ++ sfp_sm_next(sfp, SFP_S_FAIL, 0); ++ break; ++ } + if (sfp_module_start(sfp->sfp_bus)) { + sfp_sm_next(sfp, SFP_S_FAIL, 0); + break; -- cgit v1.2.3