broonie-regmap/for-next bisection: boot on ox820-cloudengines-pogoplug-series-3

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broonie-regmap/for-next bisection: boot on ox820-cloudengines-pogoplug-series-3

Summary:
  Start:      46cf053efec6 Linux 5.5-rc3
  Details:    https://kernelci.org/boot/id/5e02ce65451524462f97314f
  Plain log:  https://storage.kernelci.org//broonie-regmap/for-next/v5.5-rc3/arm/oxnas_v6_defconfig/gcc-8/lab-baylibre/boot-ox820-cloudengines-pogoplug-series-3.txt
  HTML log:   https://storage.kernelci.org//broonie-regmap/for-next/v5.5-rc3/arm/oxnas_v6_defconfig/gcc-8/lab-baylibre/boot-ox820-cloudengines-pogoplug-series-3.html
  Result:     d3e014ec7d5e net: stmmac: platform: Fix MDIO init for platforms without PHY

Checks:
  revert:     PASS
  verify:     PASS

Parameters:
  Tree:       broonie-regmap
  URL:        https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git
  Branch:     for-next
  Target:     ox820-cloudengines-pogoplug-series-3
  CPU arch:   arm
  Lab:        lab-baylibre
  Compiler:   gcc-8
  Config:     oxnas_v6_defconfig
  Test suite: boot

Breaking commit found:

-------------------------------------------------------------------------------
commit d3e014ec7d5ebe9644b5486bc530b91e62bbf624
Author: Padmanabhan Rajanbabu <p.rajanbabu@samsung.com>
Date:   Thu Dec 19 15:47:01 2019 +0530

    net: stmmac: platform: Fix MDIO init for platforms without PHY
    
    The current implementation of "stmmac_dt_phy" function initializes
    the MDIO platform bus data, even in the absence of PHY. This fix
    will skip MDIO initialization if there is no PHY present.
    
    Fixes: 7437127 ("net: stmmac: Convert to phylink and remove phylib logic")
    Acked-by: Jayati Sahu <jayati.sahu@samsung.com>
    Signed-off-by: Sriram Dash <sriram.dash@samsung.com>
    Signed-off-by: Padmanabhan Rajanbabu <p.rajanbabu@samsung.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index bedaff0c13bd..cc8d7e7bf9ac 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -320,7 +320,7 @@ static int stmmac_mtl_setup(struct platform_device *pdev,
 static int stmmac_dt_phy(struct plat_stmmacenet_data *plat,
 			 struct device_node *np, struct device *dev)
 {
-	bool mdio = true;
+	bool mdio = false;
 	static const struct of_device_id need_mdio_ids[] = {
 		{ .compatible = "snps,dwc-qos-ethernet-4.10" },
 		{},
-------------------------------------------------------------------------------


Git bisection log:

-------------------------------------------------------------------------------
git bisect start
# good: [e42617b825f8073569da76dc4510bfa019b1c35a] Linux 5.5-rc1
git bisect good e42617b825f8073569da76dc4510bfa019b1c35a
# bad: [46cf053efec6a3a5f343fead837777efe8252a46] Linux 5.5-rc3
git bisect bad 46cf053efec6a3a5f343fead837777efe8252a46
# good: [2187f215ebaac73ddbd814696d7c7fa34f0c3de0] Merge tag 'for-5.5-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
git bisect good 2187f215ebaac73ddbd814696d7c7fa34f0c3de0
# good: [0dd1e3773ae8afc4bfdce782bdeffc10f9cae6ec] pipe: fix empty pipe check in pipe_write()
git bisect good 0dd1e3773ae8afc4bfdce782bdeffc10f9cae6ec
# good: [040cda8a15210f19da7e29232c897ca6ca6cc950] Merge tag 'wireless-drivers-2019-12-17' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
git bisect good 040cda8a15210f19da7e29232c897ca6ca6cc950
# bad: [4bfeadfc0712bbc8a6556eef6d47cbae1099dea3] Merge branch 'sfc-fix-bugs-introduced-by-XDP-patches'
git bisect bad 4bfeadfc0712bbc8a6556eef6d47cbae1099dea3
# good: [0fd260056ef84ede8f444c66a3820811691fe884] Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
git bisect good 0fd260056ef84ede8f444c66a3820811691fe884
# good: [90b3b339364c76baa2436445401ea9ade040c216] net: hisilicon: Fix a BUG trigered by wrong bytes_compl
git bisect good 90b3b339364c76baa2436445401ea9ade040c216
# bad: [4c8dc00503db24deaf0b89dddfa84b7cba7cd4ce] qede: Disable hardware gro when xdp prog is installed
git bisect bad 4c8dc00503db24deaf0b89dddfa84b7cba7cd4ce
# bad: [28a3b8408f70b646e78880a7eb0a97c22ace98d1] net/smc: unregister ib devices in reboot_event
git bisect bad 28a3b8408f70b646e78880a7eb0a97c22ace98d1
# bad: [d3e014ec7d5ebe9644b5486bc530b91e62bbf624] net: stmmac: platform: Fix MDIO init for platforms without PHY
git bisect bad d3e014ec7d5ebe9644b5486bc530b91e62bbf624
# good: [af1c0e4e00f3cc76cb136ebf2e2c04e8b6446285] llc2: Fix return statement of llc_stat_ev_rx_null_dsap_xid_c (and _test_c)
git bisect good af1c0e4e00f3cc76cb136ebf2e2c04e8b6446285
# first bad commit: [d3e014ec7d5ebe9644b5486bc530b91e62bbf624] net: stmmac: platform: Fix MDIO init for platforms without PHY
-------------------------------------------------------------------------------

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