linux-toradex.git/include/linux/phy.h, branch v6.0-rc7

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2022-06-30T23:31:00+00:00

drivers/net/ethernet/microchip/sparx5/sparx5_switchdev.c
  9c5de246c1db ("net: sparx5: mdb add/del handle non-sparx5 devices")
  fbb89d02e33a ("net: sparx5: Allow mdb entries to both CPU and ports")

Signed-off-by: Jakub Kicinski

net: phy: Don't trigger state machine while in suspend

2022-06-30T03:38:52+00:00

Upon system sleep, mdio_bus_phy_suspend() stops the phy_state_machine(),
but subsequent interrupts may retrigger it:

They may have been left enabled to facilitate wakeup and are not
quiesced until the ->suspend_noirq() phase.  Unwanted interrupts may
hence occur between mdio_bus_phy_suspend() and dpm_suspend_noirq(),
as well as between dpm_resume_noirq() and mdio_bus_phy_resume().

Retriggering the phy_state_machine() through an interrupt is not only
undesirable for the reason given in mdio_bus_phy_suspend() (freezing it
midway with phydev->lock held), but also because the PHY may be
inaccessible after it's suspended:  Accesses to USB-attached PHYs are
blocked once usb_suspend_both() clears the can_submit flag and PHYs on
PCI network cards may become inaccessible upon suspend as well.

Amend phy_interrupt() to avoid triggering the state machine if the PHY
is suspended.  Signal wakeup instead if the attached net_device or its
parent has been configured as a wakeup source.  (Those conditions are
identical to mdio_bus_phy_may_suspend().)  Postpone handling of the
interrupt until the PHY has resumed.

Before stopping the phy_state_machine() in mdio_bus_phy_suspend(),
wait for a concurrent phy_interrupt() to run to completion.  That is
necessary because phy_interrupt() may have checked the PHY's suspend
status before the system sleep transition commenced and it may thus
retrigger the state machine after it was stopped.

Likewise, after re-enabling interrupt handling in mdio_bus_phy_resume(),
wait for a concurrent phy_interrupt() to complete to ensure that
interrupts which it postponed are properly rerun.

The issue was exposed by commit 1ce8b37241ed ("usbnet: smsc95xx: Forward
PHY interrupts to PHY driver to avoid polling"), but has existed since
forever.

Fixes: 541cd3ee00a4 ("phylib: Fix deadlock on resume")
Link: https://lore.kernel.org/netdev/a5315a8a-32c2-962f-f696-de9a26d30091@samsung.com/
Reported-by: Marek Szyprowski 
Tested-by: Marek Szyprowski 
Signed-off-by: Lukas Wunner 
Acked-by: Rafael J. Wysocki 
Cc: stable@vger.kernel.org # v2.6.33+
Reviewed-by: Andrew Lunn 
Link: https://lore.kernel.org/r/b7f386d04e9b5b0e2738f0125743e30676f309ef.1656410895.git.lukas@wunner.de
Signed-off-by: Jakub Kicinski

linux/phy.h: add phydev_err_probe() wrapper for dev_err_probe()

2022-06-17T03:29:06+00:00

The dev_err_probe() function is quite useful to avoid boilerplate
related to -EPROBE_DEFER handling. Add a phydev_err_probe() helper to
simplify making use of that from phy drivers which otherwise use the
phydev_* helpers.

Signed-off-by: Rasmus Villemoes 
Signed-off-by: Jakub Kicinski

net: phy: export genphy_c45_baset1_read_status()

2022-05-09T11:09:30+00:00

Export genphy_c45_baset1_read_status() to make it reusable by PHY drivers.

Signed-off-by: Oleksij Rempel 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: phy: introduce genphy_c45_pma_baset1_read_master_slave()

2022-05-09T11:09:29+00:00

Move baset1 specific part of genphy_c45_read_pma() code to
separate function to make it reusable by PHY drivers.

Signed-off-by: Oleksij Rempel 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: phy: introduce genphy_c45_pma_baset1_setup_master_slave()

2022-05-09T11:09:29+00:00

Move baset1 specific part of genphy_c45_pma_setup_forced() code to
separate function to make it reusable by PHY drivers.

Signed-off-by: Oleksij Rempel 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: phy: Add 10BASE-T1L support in phy-c45

2022-05-01T16:45:35+00:00

This patch is needed because the BASE-T1 uses different registers
for status, control and advertisement to those already
employed in the existing phy-c45 functions.

Where required, genphy_c45 functions will now check whether
the device supports BASE-T1 and use the specific registers
instead: 45.2.7.19 BASE-T1 AN control register,
45.2.7.20 BASE-T1 AN status, 45.2.7.21 BASE-T1 AN
advertisement register, 45.2.7.22 BASE-T1 AN LP Base
Page ability register, 45.2.1.185 BASE-T1 PMA/PMD control
register.

Tested-by: Oleksij Rempel 
Signed-off-by: Alexandru Tachici 
Signed-off-by: David S. Miller

ethtool: Add 10base-T1L link mode entry

2022-05-01T16:45:35+00:00

Add entry for the 10base-T1L full duplex mode.

Reviewed-by: Andrew Lunn 
Reviewed-by: Oleksij Rempel 
Signed-off-by: Alexandru Tachici 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2022-03-11T01:16:56+00:00

net/dsa/dsa2.c
  commit afb3cc1a397d ("net: dsa: unlock the rtnl_mutex when dsa_master_setup() fails")
  commit e83d56537859 ("net: dsa: replay master state events in dsa_tree_{setup,teardown}_master")
https://lore.kernel.org/all/20220307101436.7ae87da0@canb.auug.org.au/

drivers/net/ethernet/intel/ice/ice.h
  commit 97b0129146b1 ("ice: Fix error with handling of bonding MTU")
  commit 43113ff73453 ("ice: add TTY for GNSS module for E810T device")
https://lore.kernel.org/all/20220310112843.3233bcf1@canb.auug.org.au/

drivers/staging/gdm724x/gdm_lte.c
  commit fc7f750dc9d1 ("staging: gdm724x: fix use after free in gdm_lte_rx()")
  commit 4bcc4249b4cf ("staging: Use netif_rx().")
https://lore.kernel.org/all/20220308111043.1018a59d@canb.auug.org.au/

Signed-off-by: Jakub Kicinski

net: phy: correct spelling error of media in documentation

2022-03-10T22:40:59+00:00

The header file incorrectly referenced "median-independant interface"
instead of media. Correct this typo.

Signed-off-by: Colin Foster 
Fixes: 4069a572d423 ("net: phy: Document core PHY structures")
Reviewed-by: Russell King (Oracle) 
Link: https://lore.kernel.org/r/20220309062544.3073-1-colin.foster@in-advantage.com
Signed-off-by: Jakub Kicinski