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Message-ID: <6b50524f-4f24-d14e-9d3f-f03f25ca549b@windriver.com> Date: Sat, 26 Nov 2022 09:41:46 +0800 From: "Wang, Xiaolei" <xiaolei.wang@...driver.com> To: Andrew Lunn <andrew@...n.ch>, Florian Fainelli <f.fainelli@...il.com> Cc: hkallweit1@...il.com, linux@...linux.org.uk, davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [v2][PATCH 1/1] net: phy: Add link between phy dev and mac dev add Florian thanks xiaolei On 11/26/2022 5:43 AM, Andrew Lunn wrote: > CAUTION: This email comes from a non Wind River email account! > Do not click links or open attachments unless you recognize the sender and know the content is safe. > > On Fri, Nov 25, 2022 at 12:12:06PM +0800, Xiaolei Wang wrote: >> If the external phy used by current mac interface is >> managed by another mac interface, it means that this >> network port cannot work independently, especially >> when the system suspend and resume, the following >> trace may appear, so we should create a device link >> between phy dev and mac dev. >> >> WARNING: CPU: 0 PID: 24 at drivers/net/phy/phy.c:983 phy_error+0x20/0x68 >> Modules linked in: >> CPU: 0 PID: 24 Comm: kworker/0:2 Not tainted 6.1.0-rc3-00011-g5aaef24b5c6d-dirty #34 >> Hardware name: Freescale i.MX6 SoloX (Device Tree) >> Workqueue: events_power_efficient phy_state_machine >> unwind_backtrace from show_stack+0x10/0x14 >> show_stack from dump_stack_lvl+0x68/0x90 >> dump_stack_lvl from __warn+0xb4/0x24c >> __warn from warn_slowpath_fmt+0x5c/0xd8 >> warn_slowpath_fmt from phy_error+0x20/0x68 >> phy_error from phy_state_machine+0x22c/0x23c >> phy_state_machine from process_one_work+0x288/0x744 >> process_one_work from worker_thread+0x3c/0x500 >> worker_thread from kthread+0xf0/0x114 >> kthread from ret_from_fork+0x14/0x28 >> Exception stack(0xf0951fb0 to 0xf0951ff8) >> >> Signed-off-by: Xiaolei Wang <xiaolei.wang@...driver.com> > This needs Florians review, since for v1 he thinks it will cause > regressions. > > Andrew
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