On 12 April 2018 at 00:05, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > 4.9-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Leonard Crestez <leonard.crestez@xxxxxxx> > > > [ Upstream commit 79e498a9c7da0737829ff864aae44df434105676 ] > > These bits seem to be lost after a suspend/resume cycle so just set them > again. Do this by splitting the handling of these bits into a function > that is also called on resume. > > This patch fixes ethernet suspend/resume on imx6ul-14x14-evk boards. > > Signed-off-by: Leonard Crestez <leonard.crestez@xxxxxxx> > Reviewed-by: Florian Fainelli <f.fainelli@xxxxxxxxx> > Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> > Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx> > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > --- > drivers/net/phy/micrel.c | 42 ++++++++++++++++++++++++++++-------------- > 1 file changed, 28 insertions(+), 14 deletions(-) arm32 x15 device booting 4.9 kernel shows kernel warning and the network is not working on the device. Linux version 4.9.95-rc1 (buildslave@lkft-01) (gcc version 6.2.1 20161016 (Linaro GCC 6.2-2016.11) ) #1 SMP Tue Apr 17 19:12:22 UTC 2018 Boot log kernel crash log: -------------------------- [ 13.766589] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready [ 13.805441] net eth0: initializing cpsw version 1.15 (0) [ 13.930334] Unable to handle kernel NULL pointer dereference at virtual address 00000008 [ 13.938486] pgd = ed7987c0 [ 13.941221] [00000008] *pgd=ad7f1003, *pmd=fb0b6003 [ 13.946163] Internal error: Oops: 207 [#1] SMP ARM [ 13.950976] Modules linked in: snd_soc_simple_card snd_soc_simple_card_utils snd_soc_core snd_pcm_dmaengine snd_pcm snd_timer snd soundcore ac97_bus [ 13.964430] CPU: 0 PID: 251 Comm: NetworkManager Not tainted 4.9.95-rc1 #1 [ 13.971334] Hardware name: Generic DRA74X (Flattened Device Tree) [ 13.977452] task: ed6ed5c0 task.stack: ec220000 [ 13.982009] PC is at kszphy_config_reset+0x1c/0x150 [ 13.986909] LR is at kszphy_resume+0x24/0x64 [ 13.991198] pc : [<c0b6f680>] lr : [<c0b6f940>] psr: 60000013 [ 13.991198] sp : ec221920 ip : ec221940 fp : ec22193c [ 14.002723] r10: 00000000 r9 : 00000007 r8 : 00000000 [ 14.007969] r7 : ed213000 r6 : 00000000 r5 : ee6fa800 r4 : ed213400 [ 14.014523] r3 : 00000001 r2 : 00000000 r1 : 00000110 r0 : ed213400 [ 14.021079] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 14.028245] Control: 30c5387d Table: ad7987c0 DAC: fffffffd [ 14.034014] Process NetworkManager (pid: 251, stack limit = 0xec220220) [ 14.040655] Stack: (0xec221920 to 0xec222000) <> [ 14.496761] [<c0b6f680>] (kszphy_config_reset) from [<c0b6f940>] (kszphy_resume+0x24/0x64) [ 14.505067] [<c0b6f940>] (kszphy_resume) from [<c0b693f8>] (phy_attach_direct+0xc4/0x1cc) [ 14.513284] [<c0b693f8>] (phy_attach_direct) from [<c0b69600>] (phy_connect_direct+0x24/0x5c) [ 14.521848] [<c0b69600>] (phy_connect_direct) from [<c0b6968c>] (phy_connect+0x54/0x88) [ 14.529901] [<c0b6968c>] (phy_connect) from [<c0c0e47c>] (cpsw_slave_open+0x230/0x294) [ 14.529912] [<c0c0e47c>] (cpsw_slave_open) from [<c0c11634>] (cpsw_ndo_open+0x4b4/0x618) [ 14.529924] [<c0c11634>] (cpsw_ndo_open) from [<c0deeb64>] (__dev_open+0xbc/0x124) [ 14.529934] [<c0deeb64>] (__dev_open) from [<c0deee4c>] (__dev_change_flags+0xa4/0x154) [ 14.529943] [<c0deee4c>] (__dev_change_flags) from [<c0deef24>] (dev_change_flags+0x28/0x58) [ 14.529953] [<c0deef24>] (dev_change_flags) from [<c0e025f0>] (do_setlink+0x2f0/0x890) [ 14.529962] [<c0e025f0>] (do_setlink) from [<c0e04554>] (rtnl_newlink+0x4b0/0x784) [ 14.529970] [<c0e04554>] (rtnl_newlink) from [<c0e04908>] (rtnetlink_rcv_msg+0xe0/0x1fc) [ 14.529979] [<c0e04908>] (rtnetlink_rcv_msg) from [<c0e1e538>] (netlink_rcv_skb+0xb0/0xcc) [ 14.529990] [<c0e1e538>] (netlink_rcv_skb) from [<c0e01c1c>] (rtnetlink_rcv+0x38/0x40) [ 14.529998] [<c0e01c1c>] (rtnetlink_rcv) from [<c0e1de70>] (netlink_unicast+0x180/0x210) [ 14.530006] [<c0e1de70>] (netlink_unicast) from [<c0e1e29c>] (netlink_sendmsg+0x2c4/0x380) [ 14.530014] [<c0e1e29c>] (netlink_sendmsg) from [<c0dc8304>] (sock_sendmsg+0x24/0x34) [ 14.530023] [<c0dc8304>] (sock_sendmsg) from [<c0dc8a70>] (___sys_sendmsg+0x1e0/0x1f0) [ 14.530035] [<c0dc8a70>] (___sys_sendmsg) from [<c0dc9884>] (__sys_sendmsg+0x50/0x7c) [ 14.530043] [<c0dc9884>] (__sys_sendmsg) from [<c0dc98c8>] (SyS_sendmsg+0x18/0x1c) [ 14.530055] [<c0dc98c8>] (SyS_sendmsg) from [<c0408c80>] (ret_fast_syscall+0x0/0x1c) [ 14.530062] Code: e52de004 e8bd4000 e59062dc e1a04000 (e5d63008) [ 14.530113] ---[ end trace f4394cbc177fdd86 ]--- LAVA job id: https://lkft.validation.linaro.org/scheduler/job/187429#L3341