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Alvin Šipraga 487994ff75 net: dsa: realtek: rtl8365mb: fix GMII caps for ports with internal PHY
Since commit a18e6521a7 ("net: phylink: handle NA interface mode in
phylink_fwnode_phy_connect()"), phylib defaults to GMII when no phy-mode
or phy-connection-type property is specified in a DSA port node of the
device tree. The same commit caused a regression in rtl8365mb whereby
phylink would fail to connect, because the driver did not advertise
support for GMII for ports with internal PHY.

It should be noted that the aforementioned regression is not because the
blamed commit was incorrect: on the contrary, the blamed commit is
correcting the previous behaviour whereby unspecified phy-mode would
cause the internal interface mode to be PHY_INTERFACE_MODE_NA. The
rtl8365mb driver only worked by accident before because it _did_
advertise support for PHY_INTERFACE_MODE_NA, despite NA being reserved
for internal use by phylink. With one mistake fixed, the other was
exposed.

Commit a5dba0f207 ("net: dsa: rtl8365mb: add GMII as user port mode")
then introduced implicit support for GMII mode on ports with internal
PHY to allow a PHY connection for device trees where the phy-mode is not
explicitly set to "internal". At this point everything was working OK
again.

Subsequently, commit 6ff6064605 ("net: dsa: realtek: convert to
phylink_generic_validate()") broke this behaviour again by discarding
the usage of rtl8365mb_phy_mode_supported() - where this GMII support
was indicated - while switching to the new .phylink_get_caps API.

With the new API, rtl8365mb_phy_mode_supported() is no longer needed.
Remove it altogether and add back the GMII capability - this time to
rtl8365mb_phylink_get_caps() - so that the above default behaviour works
for ports with internal PHY again.

Fixes: 6ff6064605 ("net: dsa: realtek: convert to phylink_generic_validate()")
Signed-off-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/20220607184624.417641-1-alvin@pqrs.dk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-08 21:03:51 -07:00
arch bpf, arm64: Clear prog->jited_len along prog->jited 2022-06-07 10:40:53 -07:00
block Page cache changes for 5.19 2022-05-24 19:55:07 -07:00
certs Kbuild updates for v5.19 2022-05-26 12:09:50 -07:00
crypto This update includes the following changes: 2022-05-27 18:06:49 -07:00
Documentation Networking fixes for 5.19-rc1, including fixes from bpf, and netfilter. 2022-06-02 12:50:16 -07:00
drivers net: dsa: realtek: rtl8365mb: fix GMII caps for ports with internal PHY 2022-06-08 21:03:51 -07:00
fs A big pile of assorted fixes and improvements for the filesystem with 2022-06-02 08:59:39 -07:00
include ipv6: Fix signed integer overflow in __ip6_append_data 2022-06-08 10:56:43 -07:00
init RISC-V Patches for the 5.19 Merge Window, Part 1 2022-05-31 14:10:54 -07:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-05-09 18:29:21 -07:00
kernel bpf: Fix calling global functions from BPF_PROG_TYPE_EXT programs 2022-06-07 10:41:20 -07:00
lib assoc_array: Fix BUG_ON during garbage collect 2022-06-01 18:29:06 -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 RISC-V Patches for the 5.19 Merge Window, Part 1 2022-05-31 14:10:54 -07:00
net net: openvswitch: fix misuse of the cached connection on tuple changes 2022-06-08 20:49:52 -07:00
samples drm for 5.19-rc1 2022-05-25 16:18:27 -07:00
scripts Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
security linux-kselftest-kunit-5.19-rc1 2022-05-25 11:32:53 -07:00
sound m68knommu: changes for linux 5.19 2022-05-30 10:56:18 -07:00
tools Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2022-06-08 20:31:21 -07:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt VFIO updates for v5.19-rc1 2022-06-01 13:49:15 -07:00
.clang-format clang-format: Fix space after for_each macros 2022-05-20 19:27:16 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
.mailmap MAINTAINERS: Update Lorenzo Pieralisi's email address 2022-05-31 15:06:19 -05:00
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 MAINTAINERS: Add a maintainer for bpftool 2022-06-08 17:16:34 +02:00
Makefile Kbuild updates for v5.19 2022-05-26 12:09:50 -07:00
README

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

There are several guides for kernel developers and users. These guides can
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Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
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    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.