From: Heiner Kallweit <hkallweit1@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>,
Russell King - ARM Linux <linux@armlinux.org.uk>,
Jakub Kicinski <kuba@kernel.org>,
David Miller <davem@davemloft.net>,
Fugang Duan <fugang.duan@nxp.com>
Cc: "netdev@vger.kernel.org" <netdev@vger.kernel.org>,
Joakim Zhang <qiangqing.zhang@nxp.com>
Subject: [PATCH net-next 0/3] net: make PHY PM ops a no-op if MAC driver manages PHY PM
Date: Wed, 7 Apr 2021 17:50:46 +0200 [thread overview]
Message-ID: <9e695411-ab1d-34fe-8b90-3e8192ab84f6@gmail.com> (raw)
Resume callback of the PHY driver is called after the one for the MAC
driver. The PHY driver resume callback calls phy_init_hw(), and this is
potentially problematic if the MAC driver calls phy_start() in its resume
callback. One issue was reported with the fec driver and a KSZ8081 PHY
which seems to become unstable if a soft reset is triggered during aneg.
The new flag allows MAC drivers to indicate that they take care of
suspending/resuming the PHY. Then the MAC PM callbacks can handle
any dependency between MAC and PHY PM.
Heiner Kallweit (3):
net: phy: make PHY PM ops a no-op if MAC driver manages PHY PM
net: fec: use mac-managed PHY PM
r8169: use mac-managed PHY PM
drivers/net/ethernet/freescale/fec_main.c | 3 +++
drivers/net/ethernet/realtek/r8169_main.c | 3 +++
drivers/net/phy/phy_device.c | 6 ++++++
include/linux/phy.h | 2 ++
4 files changed, 14 insertions(+)
--
2.31.1
next reply other threads:[~2021-04-07 15:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-07 15:50 Heiner Kallweit [this message]
2021-04-07 15:51 ` [PATCH net-next 1/3] net: phy: make PHY PM ops a no-op if MAC driver manages PHY PM Heiner Kallweit
2021-04-07 15:52 ` [PATCH net-next 2/3] net: fec: use mac-managed " Heiner Kallweit
2021-04-08 5:45 ` Joakim Zhang
2021-04-08 5:59 ` Heiner Kallweit
2021-04-08 6:21 ` Joakim Zhang
2021-04-07 15:53 ` [PATCH net-next 3/3] r8169: " Heiner Kallweit
2021-04-08 5:42 ` [PATCH net-next 0/3] net: make PHY PM ops a no-op if MAC driver manages " Joakim Zhang
2021-04-08 9:02 ` Heiner Kallweit
2021-04-09 9:23 ` Heiner Kallweit
2021-04-10 1:13 ` Jakub Kicinski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=9e695411-ab1d-34fe-8b90-3e8192ab84f6@gmail.com \
--to=hkallweit1@gmail.com \
--cc=andrew@lunn.ch \
--cc=davem@davemloft.net \
--cc=fugang.duan@nxp.com \
--cc=kuba@kernel.org \
--cc=linux@armlinux.org.uk \
--cc=netdev@vger.kernel.org \
--cc=qiangqing.zhang@nxp.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).