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linux/drivers/net/phy
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Florian Fainelli 9baf076d79 net: phy: Check harder for errors in get_phy_id() 
[ Upstream commit b2ffc75e2e990b09903f9d15ccd53bc5f3a4217c ]

Commit 02a6efcab675 ("net: phy: allow scanning busses with missing
phys") added a special condition to return -ENODEV in case -ENODEV or
-EIO was returned from the first read of the MII_PHYSID1 register.

In case the MDIO bus data line pull-up is not strong enough, the MDIO
bus controller will not flag this as a read error. This can happen when
a pluggable daughter card is not connected and weak internal pull-ups
are used (since that is the only option, otherwise the pins are
floating).

The second read of MII_PHYSID2 will be correctly flagged an error
though, but now we will return -EIO which will be treated as a hard
error, thus preventing MDIO bus scanning loops to continue succesfully.

Apply the same logic to both register reads, thus allowing the scanning
logic to proceed.

Fixes: 02a6efcab675 ("net: phy: allow scanning busses with missing phys")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-06-30 15:36:46 -04:00
..
adin.c
net: phy: adin: implement Energy Detect Powerdown mode via phy-tunable
2019-09-16 22:02:45 +02:00
amd.c
net: phy: switch drivers to use dynamic feature detection
2019-04-15 17:19:54 -07:00
aquantia_hwmon.c
net: phy: aquantia: add hwmon support
2019-02-25 14:16:22 -08:00
aquantia_main.c
net: phy: aquantia: add suspend / resume ops for AQR105
2020-01-04 19:18:45 +01:00
aquantia.h
net: phy: aquantia: add hwmon support
2019-02-25 14:16:22 -08:00
at803x.c
net: phy: at803x: use operating parameters from PHY-specific status
2019-10-04 18:11:08 -07:00
ax88796b.c
net: phy: rename Asix Electronics PHY driver
2019-06-09 13:24:17 -07:00
bcm7xxx.c
net: phy: bcm7xxx: define soft_reset for 40nm EPHY
2019-10-18 10:00:07 -07:00
bcm63xx.c
net: phy: bcm63xx: fix OOPS due to missing driver name
2020-03-18 07:17:41 +01:00
bcm87xx.c
net: phy: bcm87xx: improve bcm87xx_config_init and feature detection
2019-05-26 21:56:41 -07:00
bcm-cygnus.c
net: phy: switch drivers to use dynamic feature detection
2019-04-15 17:19:54 -07:00
bcm-phy-lib.c
net: phy: Prepare for moving Omega out of bcm7xxx
2019-03-21 13:41:26 -07:00
bcm-phy-lib.h
net: phy: Prepare for moving Omega out of bcm7xxx
2019-03-21 13:41:26 -07:00
broadcom.c
net: phy: broadcom: Fix RGMII delays configuration for BCM54210E
2020-01-26 10:01:01 +01:00
cicada.c
net: phy: switch drivers to use dynamic feature detection
2019-04-15 17:19:54 -07:00
cortina.c
net: phy: remove gen10g_no_soft_reset
2019-03-03 21:47:57 -08:00
davicom.c
net: phy: switch drivers to use dynamic feature detection
2019-04-15 17:19:54 -07:00
dp83tc811.c
net: phy: remove calls to genphy_config_init
2019-08-17 12:34:50 -07:00
dp83640_reg.h
…
dp83640.c
dp83640: reverse arguments to list_add_tail
2020-05-14 07:58:19 +02:00
dp83822.c
net: phy: remove calls to genphy_config_init
2019-08-17 12:34:50 -07:00
dp83848.c
net: phy: remove calls to genphy_config_init
2019-08-17 12:34:50 -07:00
dp83867.c
net: phy: dp83867: w/a for fld detect threshold bootstrapping issue
2020-04-01 11:01:35 +02:00
et1011c.c
net: phy: switch drivers to use dynamic feature detection
2019-04-15 17:19:54 -07:00
fixed_phy.c
net: phy: fixed_phy: fix use-after-free when checking link GPIO
2020-02-24 08:36:43 +01:00
icplus.c
net: phy: switch drivers to use dynamic feature detection
2019-04-15 17:19:54 -07:00
intel-xway.c
net: phy: switch drivers to use dynamic feature detection
2019-04-15 17:19:54 -07:00
Kconfig
drivers: net: Fix Kconfig indentation
2019-09-26 08:56:17 +02:00
lxt.c
net: phy: lxt: Add suspend/resume support to LXT971 and LXT973.
2019-05-23 09:19:21 -07:00
Makefile
net: phy: adin: add support for Analog Devices PHYs
2019-08-16 11:56:25 -07:00
marvell10g.c
net: phy: marvell10g: report if the PHY fails to boot firmware
2019-05-29 14:25:10 -07:00
marvell.c
net: marvell: Fix OF_MDIO config check
2020-06-24 17:50:40 +02:00
mdio_bus.c
mdio_bus: don't use managed reset-controller
2019-12-04 22:30:52 +01:00
mdio_device.c
net: phy: allow for reset line to be tied to a sleepy GPIO controller
2019-10-04 18:07:45 -07:00
mdio-aspeed.c
net: phy: Add mdio-aspeed
2019-08-02 17:56:28 -07:00
mdio-bcm-iproc.c
net: phy: restore mdio regs in the iproc mdio driver
2020-03-05 16:43:31 +01:00
mdio-bcm-unimac.c
net: phy: mdio-bcm-unimac: Fix clock handling
2020-04-01 11:01:35 +02:00
mdio-bitbang.c
net: phy: Fixup GPLv2 SPDX tags based on license text
2019-01-22 20:58:40 -08:00
mdio-boardinfo.c
net: phy: Convert some PHY and MDIO driver files to SPDX headers
2019-01-22 20:53:08 -08:00
mdio-boardinfo.h
…
mdio-cavium.c
net: phy: Add SDPX tag based on COPYING file
2019-01-22 20:59:18 -08:00
mdio-cavium.h
net: mdio-octeon: Fix Kconfig warnings and build errors
2019-08-06 14:11:08 -07:00
mdio-gpio.c
net: phy: Fixup GPLv2 SPDX tags based on license text
2019-01-22 20:58:40 -08:00
mdio-hisi-femac.c
phy: mdio-hisi-femac: use devm_platform_ioremap_resource() to simplify code
2019-08-28 14:51:00 -07:00
mdio-i2c.c
net: phy: Convert some PHY and MDIO driver files to SPDX headers
2019-01-22 20:53:08 -08:00
mdio-i2c.h
net: phy: Convert some PHY and MDIO driver files to SPDX headers
2019-01-22 20:53:08 -08:00
mdio-moxart.c
phy: mdio-moxart: use devm_platform_ioremap_resource() to simplify code
2019-08-28 14:51:00 -07:00
mdio-mscc-miim.c
…
mdio-mux-bcm-iproc.c
net: phy: mdio-mux-bcm-iproc: check clk_prepare_enable() return value
2020-04-01 11:01:35 +02:00
mdio-mux-gpio.c
net: phy: Add SDPX tag based on COPYING file
2019-01-22 20:59:18 -08:00
mdio-mux-meson-g12a.c
phy: mdio-mux-meson-g12a: use devm_platform_ioremap_resource() to simplify code
2019-08-28 14:51:00 -07:00
mdio-mux-mmioreg.c
net: phy: Convert some PHY and MDIO driver files to SPDX headers
2019-01-22 20:53:08 -08:00
mdio-mux-multiplexer.c
drivers: net: phy: mdio-mux: Add support for Generic Mux controls
2019-02-27 12:52:20 -08:00
mdio-mux.c
net: phy: Add SDPX tag based on COPYING file
2019-01-22 20:59:18 -08:00
mdio-octeon.c
net: phy: Add SDPX tag based on COPYING file
2019-01-22 20:59:18 -08:00
mdio-sun4i.c
phy: mdio-sun4i: add missed regulator_disable in remove
2019-11-18 17:22:40 -08:00
mdio-thunder.c
net: phy: Add SDPX tag based on COPYING file
2019-01-22 20:59:18 -08:00
mdio-xgene.c
net: phy: xgene: use devm_platform_ioremap_resource() to simplify code
2019-08-01 13:10:34 -04:00
mdio-xgene.h
net: phy: Convert some PHY and MDIO driver files to SPDX headers
2019-01-22 20:53:08 -08:00
meson-gxl.c
net: phy: remove calls to genphy_config_init
2019-08-17 12:34:50 -07:00
micrel.c
net: phy: micrel: use genphy_read_status for KSZ9131
2020-04-21 09:04:46 +02:00
microchip_t1.c
net: phy: microchip_t1: add lan87xx_phy_init to initialize the lan87xx phy.
2020-05-20 08:20:03 +02:00
microchip.c
net: phy: remove calls to genphy_config_init
2019-08-17 12:34:50 -07:00
mscc.c
net: phy: mscc: fix firmware paths
2020-03-21 08:11:53 +01:00
national.c
net/phy: fix DP83865 10 Mbps HDX loopback disable function
2019-09-21 18:21:52 -07:00
nxp-tja11xx.c
net: phy: tja11xx: Switch to HWMON_CHANNEL_INFO()
2019-05-29 22:02:18 -07:00
phy_device.c
net: phy: Check harder for errors in get_phy_id()
2020-06-30 15:36:46 -04:00
phy_led_triggers.c
net: phy: phy_led_triggers: Fix a possible null-pointer dereference in phy_led_trigger_change_speed()
2019-07-31 18:56:11 -04:00
phy-c45.c
net: phy: Fix "link partner" information disappear issue
2019-10-16 13:17:01 -07:00
phy-core.c
net: phy: extract pause mode
2019-10-04 18:11:08 -07:00
phy.c
net: phy: fix aneg restart in phy_ethtool_set_eee
2020-05-20 08:20:09 +02:00
phylink.c
net: phylink: fix interface passed to mac_link_up
2020-01-04 19:19:17 +01:00
qsemi.c
net: phy: switch drivers to use dynamic feature detection
2019-04-15 17:19:54 -07:00
realtek.c
net: phy: realtek: fix handling of RTL8105e-integrated PHY
2020-04-13 10:48:01 +02:00
rockchip.c
net: phy: switch drivers to use dynamic feature detection
2019-04-15 17:19:54 -07:00
sfp-bus.c
net: sfp: remove sfp-bus use of netdevs
2019-05-31 12:37:46 -07:00
sfp.c
net: phy: sfp: Add labels to hwmon sensors
2019-08-24 17:01:36 -07:00
sfp.h
net: sfp: do not probe SFP module before we're attached
2019-02-08 15:11:25 -08:00
smsc.c
net: phy: smsc: LAN8740: add PHY_RST_AFTER_CLK_EN flag
2019-10-23 21:44:44 -07:00
spi_ks8995.c
spi: Micrel eth switch: declare missing of table
2019-04-23 10:44:44 -07:00
ste10Xp.c
net: phy: switch drivers to use dynamic feature detection
2019-04-15 17:19:54 -07:00
swphy.c
net: phy: swphy: emulate register MII_ESTATUS
2019-08-15 11:43:48 -07:00
swphy.h
…
teranetics.c
net: phy: remove gen10g_no_soft_reset
2019-03-03 21:47:57 -08:00
uPD60620.c
net: phy: switch drivers to use dynamic feature detection
2019-04-15 17:19:54 -07:00
vitesse.c
net: phy: remove calls to genphy_config_init
2019-08-17 12:34:50 -07:00
xilinx_gmii2rgmii.c
net: phy: gmii2rgmii: Dont use priv field in phy device
2019-09-05 12:32:06 +02:00