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Heiner Kallweit bc3361461f net: dsa: mv88e6xxx: fix few issues in mv88e6390x_port_set_cmode 
[ Upstream commit 5ceaeb99ff ]

This patches fixes few issues in mv88e6390x_port_set_cmode().

1. When entering the function the old cmode may be 0, in this case
   mv88e6390x_serdes_get_lane() returns -ENODEV. As result we bail
   out and have no chance to set a new mode. Therefore deal properly
   with -ENODEV.

2. Once we have disabled power and irq, let's set the cached cmode to 0.
   This reflects the actual status and is cleaner if we bail out with an
   error in the following function calls.

3. The cached cmode is used by mv88e6390x_serdes_get_lane(),
   mv88e6390_serdes_power_lane() and mv88e6390_serdes_irq_enable().
   Currently we set the cached mode to the new one at the very end of
   the function only, means until then we use the old one what may be
   wrong.

4. When calling mv88e6390_serdes_irq_enable() we use the lane value
   belonging to the old cmode. Get the lane belonging to the new cmode
   before calling this function.

It's hard to provide a good "Fixes" tag because quite a few smaller
changes have been done to the code in question recently.

Fixes: d235c48b40 ("net: dsa: mv88e6xxx: power serdes on/off for 10G interfaces on 6390X")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
2019-05-16 19:41:26 +02:00
arch powerpc/smp: Fix NMI IPI xmon timeout 2019-05-16 19:41:26 +02:00
block bfq: update internal depth state when queue depth changes 2019-05-16 19:41:17 +02:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto crypto: x86/poly1305 - fix overflow during partial reduction 2019-04-27 09:36:37 +02:00
Documentation x86/speculation/mds: Fix documentation typo 2019-05-14 19:18:00 +02:00
drivers net: dsa: mv88e6xxx: fix few issues in mv88e6390x_port_set_cmode 2019-05-16 19:41:26 +02:00
firmware
fs afs: Unlock pages for __pagevec_release() 2019-05-16 19:41:21 +02:00
include netfilter: ctnetlink: don't use conntrack/expect object addresses as id 2019-05-16 19:41:23 +02:00
init init: initialize jump labels before command line option parsing 2019-05-16 19:41:23 +02:00
ipc ipc/shm.c: use ERR_CAST() for shm_lock() error return 2018-10-05 16:32:04 -07:00
kernel cpu/speculation: Add 'mitigations=' cmdline option 2019-05-14 19:17:59 +02:00
lib ubsan: Fix nasty -Wbuiltin-declaration-mismatch GCC-9 warnings 2019-05-10 17:54:04 +02:00
LICENSES LICENSES: Remove CC-BY-SA-4.0 license text 2018-10-18 11:28:50 +02:00
mm mm/memory_hotplug.c: drop memory device reference after find_memory_block() 2019-05-16 19:41:25 +02:00
net netfilter: fix nf_l4proto_log_invalid to log invalid packets 2019-05-16 19:41:24 +02:00
samples samples: mei: use /dev/mei0 instead of /dev/mei 2019-02-15 08:10:11 +01:00
scripts fs: stream_open - opener for stream-like files so that read and write can run simultaneously without deadlock 2019-05-08 07:21:51 +02:00
security selinux: never allow relabeling on context mounts 2019-05-08 07:21:54 +02:00
sound x86/cpu: Sanitize FAM6_ATOM naming 2019-05-14 19:17:53 +02:00
tools selftests/net: correct the return value for run_netsocktests 2019-05-16 19:41:24 +02:00
usr initramfs: move gen_initramfs_list.sh from scripts/ to usr/ 2018-08-22 23:21:44 +09:00
virt KVM: fix spectrev1 gadgets 2019-05-16 19:41:22 +02:00
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore Kbuild updates for v4.17 (2nd) 2018-04-15 17:21:30 -07:00
.mailmap libnvdimm-for-4.19_misc 2018-08-25 18:13:10 -07:00
COPYING
CREDITS 9p: remove Ron Minnich from MAINTAINERS 2018-08-17 16:20:26 -07:00
Kbuild
Kconfig kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt 2018-08-02 08:06:55 +09:00
MAINTAINERS platform/x86: Add Intel AtomISP2 dummy / power-management driver 2019-04-20 09:16:02 +02:00
Makefile Linux 4.19.43 2019-05-14 19:18:00 +02:00
README

README 

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.
See Documentation/00-INDEX for a list of what is contained in each file.

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.