linux_dsm_epyc7002/drivers/net/phy
Richard Cochran 62582a7ee7 ptp: Avoid deadlocks in the programmable pin code.
The PTP Hardware Clock (PHC) subsystem offers an API for configuring
programmable pins.  User space sets or gets the settings using ioctls,
and drivers verify dialed settings via a callback.  Drivers may also
query pin settings by calling the ptp_find_pin() method.

Although the core subsystem protects concurrent access to the pin
settings, the implementation places illogical restrictions on how
drivers may call ptp_find_pin().  When enabling an auxiliary function
via the .enable(on=1) callback, drivers may invoke the pin finding
method, but when disabling with .enable(on=0) drivers are not
permitted to do so.  With the exception of the mv88e6xxx, all of the
PHC drivers do respect this restriction, but still the locking pattern
is both confusing and unnecessary.

This patch changes the locking implementation to allow PHC drivers to
freely call ptp_find_pin() from their .enable() and .verify()
callbacks.

V2 ChangeLog:
- fixed spelling in the kernel doc
- add Vladimir's tested by tag

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Reported-by: Yangbo Lu <yangbo.lu@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-03-30 11:16:38 -07:00
..
mscc net: phy: mscc: consolidate a common RGMII delay implementation 2020-03-24 16:36:37 -07:00
adin.c net: phy: adin: fix a warning about msleep 2020-01-19 16:06:42 +01:00
amd.c
aquantia_hwmon.c
aquantia_main.c net: phy: aquantia: use phy_read_mmd_poll_timeout() to simplify the code 2020-03-23 22:00:02 -07:00
aquantia.h net: phy: Use the correct style for SPDX License Identifier 2019-11-27 11:25:48 -08:00
at803x.c net: phy: at803x: disable vddio regulator 2020-01-31 07:54:48 -08:00
ax88796b.c
bcm7xxx.c net: phy: bcm7xx: add jumbo frame configuration to PHY 2020-03-27 16:07:24 -07:00
bcm63xx.c net: phy: bcm63xx: fix OOPS due to missing driver name 2020-03-03 17:37:06 -08:00
bcm87xx.c
bcm84881.c net: phy: bcm84881: use phy_read_mmd_poll_timeout() to simplify the code 2020-03-23 22:00:02 -07:00
bcm-cygnus.c
bcm-phy-lib.c net: phy: bcm7xx: add jumbo frame configuration to PHY 2020-03-27 16:07:24 -07:00
bcm-phy-lib.h net: phy: bcm7xx: add jumbo frame configuration to PHY 2020-03-27 16:07:24 -07:00
broadcom.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-02-21 13:39:34 -08:00
cicada.c
cortina.c
davicom.c
dp83tc811.c net: phy: remove calls to genphy_config_init 2019-08-17 12:34:50 -07:00
dp83640_reg.h
dp83640.c ptp: Avoid deadlocks in the programmable pin code. 2020-03-30 11:16:38 -07:00
dp83822.c net: phy: DP83822: Add support for additional DP83825 devices 2020-01-23 21:21:12 +01:00
dp83848.c net: phy: remove calls to genphy_config_init 2019-08-17 12:34:50 -07:00
dp83867.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-25 18:58:11 -07:00
dp83869.c net: phy: dp83869: Remove unneeded semicolon 2019-12-14 16:11:40 -08:00
et1011c.c
fixed_phy.c net: phy: fixed_phy: switch to using fwnode_gpiod_get_index 2020-01-05 14:27:01 -08:00
icplus.c
intel-xway.c
Kconfig net: phy: add marvell usb to mdio controller 2020-03-26 19:49:34 -07:00
linkmode.c net: add linkmode helper for setting flow control advertisement 2020-02-16 19:39:44 -08:00
lxt.c net: phy: provide and use genphy_read_status_fixed() 2019-12-19 12:52:34 -08:00
Makefile net: phy: add marvell usb to mdio controller 2020-03-26 19:49:34 -07:00
marvell10g.c net: phy: marvell10g: use phy_read_mmd_poll_timeout() to simplify the code 2020-03-23 22:00:02 -07:00
marvell.c net: phy: marvell: remove downshift warning now that phylib takes care 2020-03-23 21:09:47 -07:00
mdio_bus.c net: mdiobus: add APIs for modifying a MDIO device register 2020-03-17 22:51:16 -07:00
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 2020-02-16 19:19:18 -08:00
mdio-bcm-unimac.c net: phy: mdio-bcm-unimac: Fix clock handling 2020-03-24 16:45:32 -07:00
mdio-bitbang.c
mdio-boardinfo.c
mdio-boardinfo.h
mdio-cavium.c
mdio-cavium.h net: phy: Use the correct style for SPDX License Identifier 2019-11-27 11:25:48 -08:00
mdio-gpio.c
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: mdio-i2c: add support for Clause 45 accesses 2019-12-11 11:53:41 -08:00
mdio-i2c.h net: phy: Use the correct style for SPDX License Identifier 2019-11-27 11:25:48 -08:00
mdio-ipq8064.c net: mdio: add ipq8064 mdio driver 2020-03-06 22:07:05 -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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-25 18:58:11 -07:00
mdio-mux-gpio.c
mdio-mux-meson-g12a.c clk: let init callback return an error code 2019-12-23 18:53:13 -08:00
mdio-mux-mmioreg.c
mdio-mux-multiplexer.c
mdio-mux.c
mdio-mvusb.c net: phy: add marvell usb to mdio controller 2020-03-26 19:49:34 -07:00
mdio-octeon.c
mdio-sun4i.c phy: mdio-sun4i: add missed regulator_disable in remove 2019-11-18 17:22:40 -08:00
mdio-thunder.c phy: mdio-thunder: add missed pci_release_regions in remove 2019-12-06 12:05:06 -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: Use the correct style for SPDX License Identifier 2019-11-27 11:25:48 -08:00
mdio-xpcs.c net: phy: xpcs: Restart AutoNeg if outcome was invalid 2020-03-23 21:01:58 -07:00
meson-gxl.c net: phy: remove calls to genphy_config_init 2019-08-17 12:34:50 -07:00
micrel.c net: phy: micrel.c: add rgmii interface delay possibility to ksz9131 2020-03-29 21:44:26 -07:00
microchip_t1.c net: phy: remove calls to genphy_config_init 2019-08-17 12:34:50 -07:00
microchip.c net: phy: remove calls to genphy_config_init 2019-08-17 12:34:50 -07:00
mii_timestamper.c net: mii_timestamper: fix static allocation by PHY driver 2020-01-31 07:46:11 -08:00
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: use phy_read_poll_timeout() to simplify the code 2020-03-23 22:00:02 -07:00
phy_device.c net: phy: don't touch suspended flag if there's no suspend/resume callback 2020-03-26 20:29:51 -07:00
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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-02-27 18:31:39 -08:00
phy-core.c net: phy: add and use phy_check_downshift 2020-03-23 21:09:47 -07:00
phy.c net: phy: add and use phy_check_downshift 2020-03-23 21:09:47 -07:00
phylink.c net: phylink: pcs: add 802.3 clause 45 helpers 2020-03-17 22:51:16 -07:00
qsemi.c
realtek.c net: phy: realtek: read actual speed to detect downshift 2020-03-18 17:05:34 -07:00
rockchip.c
sfp-bus.c net: phy: sfp-bus.c: get rid of docs warnings 2020-03-17 23:39:29 -07:00
sfp.c net: sfp: report error on failure to read sfp soft status 2019-12-19 17:26:07 -08:00
sfp.h net: sfp: add module start/stop upstream notifications 2019-12-11 11:53:41 -08:00
smsc.c net: phy: smsc: use phy_read_poll_timeout() to simplify the code 2020-03-23 22:00:02 -07:00
spi_ks8995.c
ste10Xp.c
swphy.c net: phy: swphy: emulate register MII_ESTATUS 2019-08-15 11:43:48 -07:00
swphy.h
teranetics.c
uPD60620.c net: phy: use phy_resolve_aneg_pause() 2019-12-19 12:52:34 -08:00
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