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Saravana Kannan b3bc56e3f5 driver core: Fix device link device name collision 
commit e020ff611b upstream.

The device link device's name was of the form:
<supplier-dev-name>--<consumer-dev-name>

This can cause name collision as reported here [1] as device names are
not globally unique. Since device names have to be unique within the
bus/class, add the bus/class name as a prefix to the device names used to
construct the device link device name.

So the devuce link device's name will be of the form:
<supplier-bus-name>:<supplier-dev-name>--<consumer-bus-name>:<consumer-dev-name>

[1] - https://lore.kernel.org/lkml/20201229033440.32142-1-michael@walle.cc/

Fixes: 287905e68d ("driver core: Expose device link details in sysfs")
Cc: stable@vger.kernel.org
Reported-by: Michael Walle <michael@walle.cc>
Tested-by: Michael Walle <michael@walle.cc>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210110175408.1465657-1-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2021-01-27 11:55:18 +01:00
..
ABI driver core: Fix device link device name collision 2021-01-27 11:55:18 +01:00
accounting doc: cgroup: improve formatting of references 2020-03-02 12:57:03 -07:00
admin-guide x86/xen: Add xen_no_vector_callback option to test PCI INTX delivery 2021-01-27 11:55:01 +01:00
arm documentation: arm: sunxi: add Allwinner H6 documents 2020-10-28 11:19:24 -06:00
arm64 arm64: Add workaround for Arm Cortex-A77 erratum 1508412 2020-10-29 12:56:01 +00:00
block block-5.10-2020-10-24 2020-10-24 12:46:42 -07:00
bpf bpf: Migrate from patchwork.ozlabs.org to patchwork.kernel.org. 2020-10-11 22:05:47 +02:00
cdrom A handful of obvious fixes that wandered in during the merge window. 2020-08-13 13:57:45 -07:00
core-api dma-mapping: document dma_{alloc,free}_pages 2020-10-23 12:07:46 +02:00
cpu-freq docs: cpu-freq: convert cpufreq-stats.txt to ReST 2020-03-06 00:01:02 +01:00
crypto crypto: af_alg - add extra parameters for DRBG interface 2020-09-25 17:48:52 +10:00
dev-tools linux-kselftest-kunit-fixes-5.10-rc5 2020-11-18 11:57:55 -08:00
devicetree dt-bindings: net: renesas,etheravb: RZ/G2H needs tx-internal-delay-ps 2021-01-23 16:04:03 +01:00
doc-guide docs: kerneldoc.py: add support for kerneldoc -nosymbol 2020-10-15 07:49:38 +02:00
driver-api media: vidtv.rst: add kernel-doc markups 2020-11-26 08:05:24 +01:00
fault-injection A handful of late-arriving documentation fixes. 2020-10-23 17:13:53 -07:00
fb drm fixes (round two) for 5.10-rc1 2020-10-23 13:56:34 -07:00
features s390 updates for the 5.10 merge window 2020-10-16 12:36:38 -07:00
filesystems More fixes and cleanups for the new fast_commit features, but also a 2020-11-09 12:36:58 -08:00
firmware-guide Documentation: ACPI: fix spelling mistakes 2020-11-10 18:48:56 +01:00
firmware_class firmware: revamp firmware documentation 2017-01-11 09:42:59 +01:00
fpga Char/Misc driver patches for 5.9-rc1 2020-08-05 11:43:47 -07:00
gpu fbcon: Disable accelerated scrolling 2021-01-06 14:56:51 +01:00
hid docs: hid: Convert link to https 2020-07-13 11:26:37 -06:00
hwmon docs: hwmon: mp2975.rst: address some html build warnings 2020-10-28 11:26:10 -06:00
i2c Documentation: i2c: add testunit docs to index 2020-10-05 22:57:45 +02:00
ia64 docs/ia64: Drop obsolete Xen documentation 2020-08-31 16:16:03 -06:00
ide docs: add some directories to the main documentation index 2019-07-15 11:03:03 -03:00
iio Documentation: iio: fix a typo 2020-09-09 11:41:20 -06:00
infiniband RDMA/core: Remove FMR device ops 2020-06-02 20:32:54 -03:00
input Input: uinput - fix typo in function name documentation 2020-07-28 18:24:11 -07:00
isdn isdn: capi: dead code removal 2019-12-11 09:12:38 +01:00
kbuild kbuild: remove unused OBJSIZE 2020-11-02 11:31:00 +09:00
kernel-hacking docs: locking: Drop :c:func: throughout 2020-03-20 17:16:24 -06:00
leds docs: leds: index.rst: add a missing file 2020-11-02 13:45:37 +01:00
litmus-tests Documentation/litmus-tests: Add note on herd7 7.56 in atomic litmus test 2020-06-29 12:05:18 -07:00
livepatch livepatch: Remove .klp.arch 2020-05-08 00:12:42 +02:00
locking Documentation: seqlock: s/LOCKTYPE/LOCKNAME/g 2020-12-30 11:54:11 +01:00
m68k docs: README.buddha: convert to ReST and add to m68k book 2019-07-31 13:30:10 -06:00
maintainer Documentation/maintainer: rehome sign-off process 2020-09-03 15:39:24 -06:00
mhi docs: Add documentation for MHI bus 2020-03-19 07:41:04 +01:00
mips dt: Remove booting-without-of.rst 2020-10-13 13:33:16 -05:00
misc-devices Documentation: remove mic/index from misc-devices/index.rst 2020-11-04 11:38:32 +01:00
netlabel docs: add some directories to the main documentation index 2019-07-15 11:03:03 -03:00
networking Documentation: netdev-FAQ: suggest how to post co-dependent series 2020-11-24 20:45:22 -08:00
nios2 docs: nios2: add it to the main Documentation body 2019-07-31 13:31:51 -06:00
nvdimm nvdimm: fixes to maintainter-entry-profile 2020-05-25 10:19:19 -06:00
openrisc docs: openrisc: Replace HTTP links with HTTPS ones 2020-07-13 11:34:09 -06:00
parisc docs: parisc: convert to ReST and add to documentation body 2019-07-31 13:30:15 -06:00
PCI Documentation: better locations for sysfs-pci, sysfs-tagging 2020-10-09 09:33:23 -06:00
pcmcia docs: add some directories to the main documentation index 2019-07-15 11:03:03 -03:00
power PCI/PM: Rename pci_dev.d3_delay to d3hot_delay 2020-09-29 14:21:50 -05:00
powerpc docs updates for v5.10-rc1 2020-10-16 15:02:21 -07:00
process net: switch to the kernel.org patchwork instance 2020-11-11 17:12:00 -08:00
RCU Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu 2020-10-09 08:21:56 +02:00
riscv It has been a relatively quiet cycle for documentation, but there's still a 2020-01-29 15:27:31 -08:00
s390 It's been a busy cycle for documentation - hopefully the busiest for a 2020-08-04 22:47:54 -07:00
scheduler docs: scheduler: fix the directory name on two files 2020-09-10 10:45:45 -06:00
scsi SPDX patches for 5.10-rc1 2020-10-14 16:19:42 -07:00
security Documentation: remove current_security() reference 2020-09-09 11:33:59 -06:00
sh dt: Remove booting-without-of.rst 2020-10-13 13:33:16 -05:00
sound ALSA: doc: Fix reference to mixart.rst 2021-01-19 18:27:17 +01:00
sparc docs: add arch doc directories to the index 2019-07-15 11:03:01 -03:00
sphinx A small number of fixes, plus a build tweak to respect the desire for 2020-11-03 09:57:30 -08:00
sphinx-static doc-rst: Reduce CSS padding around Field 2019-10-02 10:03:06 -06:00
spi SPI SUBSYSTEM: Replace HTTP links with HTTPS ones 2020-07-09 22:41:11 +01:00
staging remoteproc updates for v5.9 2020-08-11 11:17:45 -07:00
target doc: don't use deprecated "---help---" markers in target docs 2020-06-13 13:32:40 -07:00
timers docs: timers: drop documentation about LB_BIAS 2020-07-23 14:32:44 -06:00
trace docs updates for v5.10-rc1 2020-10-16 15:02:21 -07:00
translations net: switch to the kernel.org patchwork instance 2020-11-11 17:12:00 -08:00
usb USB: Replace HTTP links with HTTPS ones 2020-07-21 13:41:57 +02:00
userspace-api docs: userspace-api: add iommu.rst to the index file 2020-10-28 11:26:10 -06:00
virt KVM: mmu: Fix SPTE encoding of MMIO generation upper half 2020-12-11 19:18:43 -05:00
vm A handful of late-arriving documentation fixes. 2020-10-23 17:13:53 -07:00
w1 docs: w1: w1_therm: Fix broken xref, mistakes, clarify text 2020-10-08 09:47:15 +02:00
watchdog watchdog: add support for adjusting last known HW keepalive time 2020-08-05 18:43:02 +02:00
x86 x86/CPU/AMD: Save AMD NodeId as cpu_die_id 2020-12-30 11:54:29 +01:00
xtensa xtensa: fix TLBTEMP area placement 2020-11-16 02:13:15 -08:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
asm-annotations.rst Documentation: Call out example SYM_FUNC_* usage as x86-specific 2020-01-16 12:53:16 -07:00
atomic_bitops.txt docs: atomic_bitops.txt: add a title for this document 2019-04-11 12:37:02 -06:00
atomic_t.txt Documentation/litmus-tests/atomic: Add a test for smp_mb__after_atomic() 2020-06-29 12:05:18 -07:00
Changes docs: add back 'Documentation/Changes' file (as symlink) 2016-12-14 16:30:12 -08:00
CodingStyle doc: re-add CodingStyle and SubmittingPatches 2016-10-24 08:12:35 -02:00
conf.py This pull contains a series of warning fixes from Mauro; once applied, the 2020-11-03 13:14:14 -08:00
COPYING-logo Replace HTTP links with HTTPS ones: documentation 2020-06-08 09:30:19 -06:00
docutils.conf doc-rst: Add missing newline at end of file 2019-06-20 14:16:56 -06:00
dontdiff Documentation: dontdiff: Add zstd compressed files 2020-07-31 11:51:10 +02:00
index.rst docs: index.rst: Add watch_queue 2020-07-23 14:13:23 -06:00
Kconfig docs: Kconfig/Makefile: add a check for broken ABI files 2020-10-30 13:08:07 +01:00
logo.gif Revert "linux.conf.au 2009: Tuz" 2009-04-27 12:00:27 -07:00
Makefile A small number of fixes, plus a build tweak to respect the desire for 2020-11-03 09:57:30 -08:00
memory-barriers.txt docs/memory-barriers.txt: Fix references for DMA*.txt files 2020-08-31 16:14:44 -06:00
SubmittingPatches doc: re-add CodingStyle and SubmittingPatches 2016-10-24 08:12:35 -02:00
watch_queue.rst docs: watch_queue: fix some warnings 2020-09-10 10:48:56 -06:00