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Guangbin Huang ad0ecaef6a net: hns3: fix phy can not link up when autoneg off and reset
Currently, function hclge_mdio_read() will return 0 if during reset(the
cmd state will be set to disable).

If use general phy driver, the phy_state_machine() will update phy speed
every second in function genphy_read_status_fixed() when PHY is set to
autoneg off, no matter of link down or link up.

If phy driver happens to read BMCR register during reset, phy speed will
be updated to 10Mpbs as BMCR register value is 0. So it may call phy can
not link up if previous speed is not 10Mpbs.

To fix this problem, function hclge_mdio_read() should return -EBUSY if
the cmd state is disable. So does function hclge_mdio_write().

Fixes: 1c12493809 ("net: hns3: bugfix for hclge_mdio_write and hclge_mdio_read")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-03-26 09:16:49 -07:00
arch Networking changes for 5.18. 2022-03-24 13:13:26 -07:00
block Filesystem folio changes for 5.18 2022-03-22 18:26:56 -07:00
certs KEYS: Introduce link restriction for machine keys 2022-03-08 13:55:52 +02:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2022-03-21 16:02:36 -07:00
Documentation Networking changes for 5.18. 2022-03-24 13:13:26 -07:00
drivers net: hns3: fix phy can not link up when autoneg off and reset 2022-03-26 09:16:49 -07:00
fs flexible-array transformations for 5.18-rc1 2022-03-24 11:39:32 -07:00
include Networking changes for 5.18. 2022-03-24 13:13:26 -07:00
init Networking changes for 5.18. 2022-03-24 13:13:26 -07:00
ipc fs: allocate inode by using alloc_inode_sb() 2022-03-22 15:57:03 -07:00
kernel Networking changes for 5.18. 2022-03-24 13:13:26 -07:00
lib Networking changes for 5.18. 2022-03-24 13:13:26 -07:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm ARM: 2022-03-24 11:58:57 -07:00
net llc: only change llc->dev when bind() succeeds 2022-03-25 16:55:41 -07:00
samples Networking changes for 5.18. 2022-03-24 13:13:26 -07:00
scripts Networking changes for 5.18. 2022-03-24 13:13:26 -07:00
security Networking changes for 5.18. 2022-03-24 13:13:26 -07:00
sound flexible-array transformations for 5.18-rc1 2022-03-24 11:39:32 -07:00
tools selftests: test_vxlan_under_vrf: Fix broken test case 2022-03-25 17:00:11 -07:00
usr reiserfs_xattr.h: add linux/reiserfs_xattr.h to UAPI compile-test coverage 2022-02-17 09:09:38 +01:00
virt KVM: compat: riscv: Prevent KVM_COMPAT from being selected 2022-03-11 19:02:15 +05:30
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap MAINTAINERS: Update Jisheng's email address 2022-03-08 17:30:32 +01:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Networking changes for 5.18. 2022-03-24 13:13:26 -07:00
Makefile Linux 5.17 2022-03-20 13:14:17 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.