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Heiner Kallweit 96fb2077a5 net: phy: consider that suspend2ram may cut off PHY power 
[ Upstream commit 4c0d2e96ba055bd8911bb8287def4f8ebbad15b6 ]

Claudiu reported that on his system S2R cuts off power to the PHY and
after resuming certain PHY settings are lost. The PM folks confirmed
that cutting off power to selected components in S2R is a valid case.
Therefore resuming from S2R, same as from hibernation, has to assume
that the PHY has power-on defaults. As a consequence use the restore
callback also as resume callback.
In addition make sure that the interrupt configuration is restored.
Let's do this in phy_init_hw() and ensure that after this call
actual interrupt configuration is in sync with phydev->interrupts.
Currently, if interrupt was enabled before hibernation, we would
resume with interrupt disabled because that's the power-on default.

This fix applies cleanly only after the commit marked as fixed.

I don't have an affected system, therefore change is compile-tested
only.

[0] https://lore.kernel.org/netdev/1610120754-14331-1-git-send-email-claudiu.beznea@microchip.com/

Fixes: 611d779af7 ("net: phy: fix MDIO bus PM PHY resuming")
Reported-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-03-04 11:37:31 +01:00
arch ARM: at91: use proper asm syntax in pm_suspend 2021-03-04 11:37:28 +01:00
block bfq: Avoid false bfq queue merging 2021-03-04 11:37:18 +01:00
certs
crypto crypto: xor - Fix divide error in do_xor_speed() 2021-01-27 11:54:52 +01:00
Documentation scsi: libsas: docs: Remove notify_ha_event() 2021-03-04 11:37:17 +01:00
drivers net: phy: consider that suspend2ram may cut off PHY power 2021-03-04 11:37:31 +01:00
fs debugfs: do not attempt to create a new file before the filesystem is initalized 2021-03-04 11:37:17 +01:00
include ACPICA: Fix exception code class checks 2021-03-04 11:37:24 +01:00
init fgraph: Initialize tracing_graph_pause at task creation 2021-02-10 09:29:16 +01:00
ipc
kernel bpf_lru_list: Read double-checked variable once without lock 2021-03-04 11:37:29 +01:00
lib udp: fix skb_copy_and_csum_datagram with odd segment sizes 2021-02-17 11:02:28 +01:00
LICENSES
mm mm: provide a saner PTE walking API for modules 2021-02-26 10:13:01 +01:00
net Bluetooth: Put HCI device if inquiry procedure interrupts 2021-03-04 11:37:25 +01:00
samples samples/bpf: Fix possible hang in xdpsock with multiple threads 2020-12-30 11:53:49 +01:00
scripts scripts/recordmcount.pl: support big endian for ARCH sh 2021-02-26 10:13:02 +01:00
security cap: fix conversions on getxattr 2021-02-17 11:02:22 +01:00
sound ALSA: pcm: Don't call sync_stop if it hasn't been stopped 2021-03-04 11:37:19 +01:00
tools selftests/bpf: Convert test_xdp_redirect.sh to bash 2021-03-04 11:37:30 +01:00
usr
virt KVM: Use kvm_pfn_t for local PFN variable in hva_to_pfn_remapped() 2021-02-26 10:13:01 +01:00
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MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-12-10 15:30:13 -08:00
Makefile Linux 5.10.19 2021-02-26 10:14:35 +01:00
README

README 

Linux kernel
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Please read the Documentation/process/changes.rst file, as it contains the
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