linux-stable.git/drivers/net/phy, branch v4.19.26 Linux kernel stable tree net: phylink: avoid resolving link state too early 2019-02-27T09:09:03+00:00 Russell King rmk+kernel@armlinux.org.uk 2019-02-11T15:04:24+00:00 101e1972655200fccb5b9017c98bed49924845ac commit 87454b6edc1b0143fdb3d9853285477e95af74a4 upstream. During testing on Armada 388 platforms, it was found with a certain module configuration that it was possible to trigger a kernel oops during the module load process, caused by the phylink resolver being triggered for a currently disabled interface. This problem was introduced by changing the way the SFP registration works, which now can result in the sfp link down notification being called during phylink_create(). Fixes: b5bfc21af5cb ("net: sfp: do not probe SFP module before we're attached") Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 87454b6edc1b0143fdb3d9853285477e95af74a4 upstream.

During testing on Armada 388 platforms, it was found with a certain
module configuration that it was possible to trigger a kernel oops
during the module load process, caused by the phylink resolver being
triggered for a currently disabled interface.

This problem was introduced by changing the way the SFP registration
works, which now can result in the sfp link down notification being
called during phylink_create().

Fixes: b5bfc21af5cb ("net: sfp: do not probe SFP module before we're attached")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net: sfp: do not probe SFP module before we're attached 2019-02-27T09:08:58+00:00 Russell King rmk+kernel@armlinux.org.uk 2019-02-06T10:52:30+00:00 9e5cc54ea086d91a2e4923bb693cc8e5b76c3085 [ Upstream commit b5bfc21af5cb3d53f9cee0ef82eaa43762a90f81 ] When we probe a SFP module, we expect to be able to call the upstream device's module_insert() function so that the upstream link can be configured. However, when the upstream device is delayed, we currently may end up probing the module before the upstream device is available, and lose the module_insert() call. Avoid this by holding off probing the module until the SFP bus is properly connected to both the SFP socket driver and the upstream driver. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit b5bfc21af5cb3d53f9cee0ef82eaa43762a90f81 ]

When we probe a SFP module, we expect to be able to call the upstream
device's module_insert() function so that the upstream link can be
configured.  However, when the upstream device is delayed, we currently
may end up probing the module before the upstream device is available,
and lose the module_insert() call.

Avoid this by holding off probing the module until the SFP bus is
properly connected to both the SFP socket driver and the upstream
driver.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net: phy: xgmiitorgmii: Support generic PHY status read 2019-02-23T08:07:25+00:00 Paul Kocialkowski paul.kocialkowski@bootlin.com 2019-02-15T16:17:08+00:00 618bd2c202b4be4aac47fe520a7264bd041a2764 [ Upstream commit 197f9ab7f08ce4b9ece662f747c3991b2f0fbb57 ] Some PHY drivers like the generic one do not provide a read_status callback on their own but rely on genphy_read_status being called directly. With the current code, this results in a NULL function pointer call. Call genphy_read_status instead when there is no specific callback. Fixes: f411a6160bd4 ("net: phy: Add gmiitorgmii converter support") Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 197f9ab7f08ce4b9ece662f747c3991b2f0fbb57 ]

Some PHY drivers like the generic one do not provide a read_status
callback on their own but rely on genphy_read_status being called
directly.

With the current code, this results in a NULL function pointer call.
Call genphy_read_status instead when there is no specific callback.

Fixes: f411a6160bd4 ("net: phy: Add gmiitorgmii converter support")
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Revert "net: phy: marvell: avoid pause mode on SGMII-to-Copper for 88e151x" 2019-02-12T18:47:22+00:00 Russell King rmk+kernel@armlinux.org.uk 2019-01-31T16:59:46+00:00 7c1a5ce672f71be742429644b58f4c7cec6a4af2 [ Upstream commit c14f07c6211cc01d52ed92cce1fade5071b8d197 ] This reverts commit 6623c0fba10ef45b64ca213ad5dec926f37fa9a0. The original diagnosis was incorrect: it appears that the NIC had PHY polling mode enabled, which meant that it overwrote the PHYs advertisement register during negotiation. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Tested-by: Yonglong Liu <liuyonglong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit c14f07c6211cc01d52ed92cce1fade5071b8d197 ]

This reverts commit 6623c0fba10ef45b64ca213ad5dec926f37fa9a0.

The original diagnosis was incorrect: it appears that the NIC had
PHY polling mode enabled, which meant that it overwrote the PHYs
advertisement register during negotiation.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Tested-by: Yonglong Liu <liuyonglong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net: dp83640: expire old TX-skb 2019-02-12T18:47:21+00:00 Sebastian Andrzej Siewior bigeasy@linutronix.de 2019-02-04T10:20:29+00:00 8e1428c9b39f29bc143599666e84917e0041fc8f [ Upstream commit 53bc8d2af08654659abfadfd3e98eb9922ff787c ] During sendmsg() a cloned skb is saved via dp83640_txtstamp() in ->tx_queue. After the NIC sends this packet, the PHY will reply with a timestamp for that TX packet. If the cable is pulled at the right time I don't see that packet. It might gets flushed as part of queue shutdown on NIC's side. Once the link is up again then after the next sendmsg() we enqueue another skb in dp83640_txtstamp() and have two on the list. Then the PHY will send a reply and decode_txts() attaches it to the first skb on the list. No crash occurs since refcounting works but we are one packet behind. linuxptp/ptp4l usually closes the socket and opens a new one (in such a timeout case) so those "stale" replies never get there. However it does not resume normal operation anymore. Purge old skbs in decode_txts(). Fixes: cb646e2b02b2 ("ptp: Added a clock driver for the National Semiconductor PHYTER.") Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit 53bc8d2af08654659abfadfd3e98eb9922ff787c ]

During sendmsg() a cloned skb is saved via dp83640_txtstamp() in
->tx_queue. After the NIC sends this packet, the PHY will reply with a
timestamp for that TX packet. If the cable is pulled at the right time I
don't see that packet. It might gets flushed as part of queue shutdown
on NIC's side.
Once the link is up again then after the next sendmsg() we enqueue
another skb in dp83640_txtstamp() and have two on the list. Then the PHY
will send a reply and decode_txts() attaches it to the first skb on the
list.
No crash occurs since refcounting works but we are one packet behind.
linuxptp/ptp4l usually closes the socket and opens a new one (in such a
timeout case) so those "stale" replies never get there. However it does
not resume normal operation anymore.

Purge old skbs in decode_txts().

Fixes: cb646e2b02b2 ("ptp: Added a clock driver for the National Semiconductor PHYTER.")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net: phy: marvell: Fix deadlock from wrong locking 2019-01-31T07:14:33+00:00 Andrew Lunn andrew@lunn.ch 2019-01-10T23:15:21+00:00 c9fe9d194d4513d5902a4e79db0092ace010e572 [ Upstream commit e0a7328fad9979104f73e19bedca821ef3262ae1 ] m88e1318_set_wol() takes the lock as part of phy_select_page(). Don't take the lock again with phy_read(), use the unlocked __phy_read(). Fixes: 424ca4c55121 ("net: phy: marvell: fix paged access races") Reported-by: Åke Rehnman <ake.rehnman@gmail.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit e0a7328fad9979104f73e19bedca821ef3262ae1 ]

m88e1318_set_wol() takes the lock as part of phy_select_page(). Don't
take the lock again with phy_read(), use the unlocked __phy_read().

Fixes: 424ca4c55121 ("net: phy: marvell: fix paged access races")
Reported-by: Åke Rehnman <ake.rehnman@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net: phy: mdio_bus: add missing device_del() in mdiobus_register() error handling 2019-01-31T07:14:31+00:00 Thomas Petazzoni thomas.petazzoni@bootlin.com 2019-01-16T09:53:58+00:00 3e4cd0677715b4ba2aee3a76f25f144c0f90b3d2 [ Upstream commit e40e2a2e78664fa90ea4b9bdf4a84efce2fea9d9 ] The current code in __mdiobus_register() doesn't properly handle failures returned by the devm_gpiod_get_optional() call: it returns immediately, without unregistering the device that was added by the call to device_register() earlier in the function. This leaves a stale device, which then causes a NULL pointer dereference in the code that handles deferred probing: [ 1.489982] Unable to handle kernel NULL pointer dereference at virtual address 00000074 [ 1.498110] pgd = (ptrval) [ 1.500838] [00000074] *pgd=00000000 [ 1.504432] Internal error: Oops: 17 [#1] SMP ARM [ 1.509133] Modules linked in: [ 1.512192] CPU: 1 PID: 51 Comm: kworker/1:3 Not tainted 4.20.0-00039-g3b73a4cc8b3e-dirty #99 [ 1.520708] Hardware name: Xilinx Zynq Platform [ 1.525261] Workqueue: events deferred_probe_work_func [ 1.530403] PC is at klist_next+0x10/0xfc [ 1.534403] LR is at device_for_each_child+0x40/0x94 [ 1.539361] pc : [<c0683fbc>] lr : [<c0455d90>] psr: 200e0013 [ 1.545628] sp : ceeefe68 ip : 00000001 fp : ffffe000 [ 1.550863] r10: 00000000 r9 : c0c66790 r8 : 00000000 [ 1.556079] r7 : c0457d44 r6 : 00000000 r5 : ceeefe8c r4 : cfa2ec78 [ 1.562604] r3 : 00000064 r2 : c0457d44 r1 : ceeefe8c r0 : 00000064 [ 1.569129] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [ 1.576263] Control: 18c5387d Table: 0ed7804a DAC: 00000051 [ 1.582013] Process kworker/1:3 (pid: 51, stack limit = 0x(ptrval)) [ 1.588280] Stack: (0xceeefe68 to 0xceef0000) [ 1.592630] fe60: cfa2ec78 c0c03c08 00000000 c0457d44 00000000 c0c66790 [ 1.600814] fe80: 00000000 c0455d90 ceeefeac 00000064 00000000 0d7a542e cee9d494 cfa2ec78 [ 1.608998] fea0: cfa2ec78 00000000 c0457d44 c0457d7c cee9d494 c0c03c08 00000000 c0455dac [ 1.617182] fec0: cf98ba44 cf926a00 cee9d494 0d7a542e 00000000 cf935a10 cf935a10 cf935a10 [ 1.625366] fee0: c0c4e9b8 c0457d7c c0c4e80c 00000001 cf935a10 c0457df4 cf935a10 c0c4e99c [ 1.633550] ff00: c0c4e99c c045a27c c0c4e9c4 ced63f80 cfde8a80 cfdebc00 00000000 c013893c [ 1.641734] ff20: cfde8a80 cfde8a80 c07bd354 ced63f80 ced63f94 cfde8a80 00000008 c0c02d00 [ 1.649936] ff40: cfde8a98 cfde8a80 ffffe000 c0139a30 ffffe000 c0c6624a c07bd354 00000000 [ 1.658120] ff60: ffffe000 cee9e780 ceebfe00 00000000 ceeee000 ced63f80 c0139788 cf8cdea4 [ 1.666304] ff80: cee9e79c c013e598 00000001 ceebfe00 c013e44c 00000000 00000000 00000000 [ 1.674488] ffa0: 00000000 00000000 00000000 c01010e8 00000000 00000000 00000000 00000000 [ 1.682671] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 1.690855] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [ 1.699058] [<c0683fbc>] (klist_next) from [<c0455d90>] (device_for_each_child+0x40/0x94) [ 1.707241] [<c0455d90>] (device_for_each_child) from [<c0457d7c>] (device_reorder_to_tail+0x38/0x88) [ 1.716476] [<c0457d7c>] (device_reorder_to_tail) from [<c0455dac>] (device_for_each_child+0x5c/0x94) [ 1.725692] [<c0455dac>] (device_for_each_child) from [<c0457d7c>] (device_reorder_to_tail+0x38/0x88) [ 1.734927] [<c0457d7c>] (device_reorder_to_tail) from [<c0457df4>] (device_pm_move_to_tail+0x28/0x40) [ 1.744235] [<c0457df4>] (device_pm_move_to_tail) from [<c045a27c>] (deferred_probe_work_func+0x58/0x8c) [ 1.753746] [<c045a27c>] (deferred_probe_work_func) from [<c013893c>] (process_one_work+0x210/0x4fc) [ 1.762888] [<c013893c>] (process_one_work) from [<c0139a30>] (worker_thread+0x2a8/0x5c0) [ 1.771072] [<c0139a30>] (worker_thread) from [<c013e598>] (kthread+0x14c/0x154) [ 1.778482] [<c013e598>] (kthread) from [<c01010e8>] (ret_from_fork+0x14/0x2c) [ 1.785689] Exception stack(0xceeeffb0 to 0xceeefff8) [ 1.790739] ffa0: 00000000 00000000 00000000 00000000 [ 1.798923] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 1.807107] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 [ 1.813724] Code: e92d47f0 e1a05000 e8900048 e1a00003 (e5937010) [ 1.819844] ---[ end trace 3c2c0c8b65399ec9 ]--- The actual error that we had from devm_gpiod_get_optional() was -EPROBE_DEFER, due to the GPIO being provided by a driver that is probed later than the Ethernet controller driver. To fix this, we simply add the missing device_del() invocation in the error path. Fixes: 69226896ad636 ("mdio_bus: Issue GPIO RESET to PHYs") Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit e40e2a2e78664fa90ea4b9bdf4a84efce2fea9d9 ]

The current code in __mdiobus_register() doesn't properly handle
failures returned by the devm_gpiod_get_optional() call: it returns
immediately, without unregistering the device that was added by the
call to device_register() earlier in the function.

This leaves a stale device, which then causes a NULL pointer
dereference in the code that handles deferred probing:

[    1.489982] Unable to handle kernel NULL pointer dereference at virtual address 00000074
[    1.498110] pgd = (ptrval)
[    1.500838] [00000074] *pgd=00000000
[    1.504432] Internal error: Oops: 17 [#1] SMP ARM
[    1.509133] Modules linked in:
[    1.512192] CPU: 1 PID: 51 Comm: kworker/1:3 Not tainted 4.20.0-00039-g3b73a4cc8b3e-dirty #99
[    1.520708] Hardware name: Xilinx Zynq Platform
[    1.525261] Workqueue: events deferred_probe_work_func
[    1.530403] PC is at klist_next+0x10/0xfc
[    1.534403] LR is at device_for_each_child+0x40/0x94
[    1.539361] pc : [<c0683fbc>]    lr : [<c0455d90>]    psr: 200e0013
[    1.545628] sp : ceeefe68  ip : 00000001  fp : ffffe000
[    1.550863] r10: 00000000  r9 : c0c66790  r8 : 00000000
[    1.556079] r7 : c0457d44  r6 : 00000000  r5 : ceeefe8c  r4 : cfa2ec78
[    1.562604] r3 : 00000064  r2 : c0457d44  r1 : ceeefe8c  r0 : 00000064
[    1.569129] Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[    1.576263] Control: 18c5387d  Table: 0ed7804a  DAC: 00000051
[    1.582013] Process kworker/1:3 (pid: 51, stack limit = 0x(ptrval))
[    1.588280] Stack: (0xceeefe68 to 0xceef0000)
[    1.592630] fe60:                   cfa2ec78 c0c03c08 00000000 c0457d44 00000000 c0c66790
[    1.600814] fe80: 00000000 c0455d90 ceeefeac 00000064 00000000 0d7a542e cee9d494 cfa2ec78
[    1.608998] fea0: cfa2ec78 00000000 c0457d44 c0457d7c cee9d494 c0c03c08 00000000 c0455dac
[    1.617182] fec0: cf98ba44 cf926a00 cee9d494 0d7a542e 00000000 cf935a10 cf935a10 cf935a10
[    1.625366] fee0: c0c4e9b8 c0457d7c c0c4e80c 00000001 cf935a10 c0457df4 cf935a10 c0c4e99c
[    1.633550] ff00: c0c4e99c c045a27c c0c4e9c4 ced63f80 cfde8a80 cfdebc00 00000000 c013893c
[    1.641734] ff20: cfde8a80 cfde8a80 c07bd354 ced63f80 ced63f94 cfde8a80 00000008 c0c02d00
[    1.649936] ff40: cfde8a98 cfde8a80 ffffe000 c0139a30 ffffe000 c0c6624a c07bd354 00000000
[    1.658120] ff60: ffffe000 cee9e780 ceebfe00 00000000 ceeee000 ced63f80 c0139788 cf8cdea4
[    1.666304] ff80: cee9e79c c013e598 00000001 ceebfe00 c013e44c 00000000 00000000 00000000
[    1.674488] ffa0: 00000000 00000000 00000000 c01010e8 00000000 00000000 00000000 00000000
[    1.682671] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    1.690855] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[    1.699058] [<c0683fbc>] (klist_next) from [<c0455d90>] (device_for_each_child+0x40/0x94)
[    1.707241] [<c0455d90>] (device_for_each_child) from [<c0457d7c>] (device_reorder_to_tail+0x38/0x88)
[    1.716476] [<c0457d7c>] (device_reorder_to_tail) from [<c0455dac>] (device_for_each_child+0x5c/0x94)
[    1.725692] [<c0455dac>] (device_for_each_child) from [<c0457d7c>] (device_reorder_to_tail+0x38/0x88)
[    1.734927] [<c0457d7c>] (device_reorder_to_tail) from [<c0457df4>] (device_pm_move_to_tail+0x28/0x40)
[    1.744235] [<c0457df4>] (device_pm_move_to_tail) from [<c045a27c>] (deferred_probe_work_func+0x58/0x8c)
[    1.753746] [<c045a27c>] (deferred_probe_work_func) from [<c013893c>] (process_one_work+0x210/0x4fc)
[    1.762888] [<c013893c>] (process_one_work) from [<c0139a30>] (worker_thread+0x2a8/0x5c0)
[    1.771072] [<c0139a30>] (worker_thread) from [<c013e598>] (kthread+0x14c/0x154)
[    1.778482] [<c013e598>] (kthread) from [<c01010e8>] (ret_from_fork+0x14/0x2c)
[    1.785689] Exception stack(0xceeeffb0 to 0xceeefff8)
[    1.790739] ffa0:                                     00000000 00000000 00000000 00000000
[    1.798923] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    1.807107] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    1.813724] Code: e92d47f0 e1a05000 e8900048 e1a00003 (e5937010)
[    1.819844] ---[ end trace 3c2c0c8b65399ec9 ]---

The actual error that we had from devm_gpiod_get_optional() was
-EPROBE_DEFER, due to the GPIO being provided by a driver that is
probed later than the Ethernet controller driver.

To fix this, we simply add the missing device_del() invocation in the
error path.

Fixes: 69226896ad636 ("mdio_bus: Issue GPIO RESET to PHYs")
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net: phy: marvell: Errata for mv88e6390 internal PHYs 2019-01-31T07:14:31+00:00 Andrew Lunn andrew@lunn.ch 2019-01-10T21:48:36+00:00 1a864e38b39e9f28ae1d635379e6d52b2d8245a4 [ Upstream commit 8cbcdc1a51999ca81db2956608b917aacd28d837 ] The VOD can be out of spec, unless some magic value is poked into an undocumented register in an undocumented page. Fixes: e4cf8a38fc0d ("net: phy: Marvell: Add mv88e6390 internal PHY") Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit 8cbcdc1a51999ca81db2956608b917aacd28d837 ]

The VOD can be out of spec, unless some magic value is poked into an
undocumented register in an undocumented page.

Fixes: e4cf8a38fc0d ("net: phy: Marvell: Add mv88e6390 internal PHY")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net: phy: Fix the issue that netif always links up after resuming 2019-01-09T16:38:32+00:00 Kunihiko Hayashi hayashi.kunihiko@socionext.com 2018-12-18T07:57:04+00:00 4d1edda006a542a29e1d5a68f4cd2b6a9386f613 [ Upstream commit 8742beb50f2db903d3b6d69ddd81d67ce9914453 ] Even though the link is down before entering hibernation, there is an issue that the network interface always links up after resuming from hibernation. If the link is still down before enabling the network interface, and after resuming from hibernation, the phydev->state is forcibly set to PHY_UP in mdio_bus_phy_restore(), and the link becomes up. In suspend sequence, only if the PHY is attached, mdio_bus_phy_suspend() calls phy_stop_machine(), and mdio_bus_phy_resume() calls phy_start_machine(). In resume sequence, it's enough to do the same as mdio_bus_phy_resume() because the state has been preserved. This patch fixes the issue by calling phy_start_machine() in mdio_bus_phy_restore() in the same way as mdio_bus_phy_resume(). Fixes: bc87922ff59d ("phy: Move PHY PM operations into phy_device") Suggested-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit 8742beb50f2db903d3b6d69ddd81d67ce9914453 ]

Even though the link is down before entering hibernation,
there is an issue that the network interface always links up after resuming
from hibernation.

If the link is still down before enabling the network interface,
and after resuming from hibernation, the phydev->state is forcibly set
to PHY_UP in mdio_bus_phy_restore(), and the link becomes up.

In suspend sequence, only if the PHY is attached, mdio_bus_phy_suspend()
calls phy_stop_machine(), and mdio_bus_phy_resume() calls
phy_start_machine().
In resume sequence, it's enough to do the same as mdio_bus_phy_resume()
because the state has been preserved.

This patch fixes the issue by calling phy_start_machine() in
mdio_bus_phy_restore() in the same way as mdio_bus_phy_resume().

Fixes: bc87922ff59d ("phy: Move PHY PM operations into phy_device")
Suggested-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net: phy: sfp: correct store of detected link modes 2018-12-17T08:24:28+00:00 Baruch Siach baruch@tkos.co.il 2018-11-29T10:40:11+00:00 4aa6d46d1711758ee18d078b76175b807ac55438 [ Upstream commit d7f7e0018b96fd1a30a968faa9464eb57372c1ec ] The link modes that sfp_parse_support() detects are stored in the 'modes' bitmap. There is no reason to make an exception for 1000Base-PX or 1000Base-BX10. Fixes: 03145864bd0f ("sfp: support 1G BiDi (eg, FiberStore SFP-GE-BX) modules") Signed-off-by: Baruch Siach <baruch@tkos.co.il> Acked-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit d7f7e0018b96fd1a30a968faa9464eb57372c1ec ]

The link modes that sfp_parse_support() detects are stored in the
'modes' bitmap. There is no reason to make an exception for 1000Base-PX
or 1000Base-BX10.

Fixes: 03145864bd0f ("sfp: support 1G BiDi (eg, FiberStore SFP-GE-BX) modules")
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>