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Filename Latest commit message Latest commit date
Lyude Paul b1d76d16af drm/nouveau/kms: Don't change EDID when it hasn't actually changed
[ Upstream commit f28e32d3906eac2e1cb3291b448f0d528ec93996 ]

Currently in nouveau_connector_ddc_detect() and
nouveau_connector_detect_lvds(), we start the connector probing process
by releasing the previous EDID and informing DRM of the change. However,
since commit 5186421cbfe2 ("drm: Introduce epoch counter to
drm_connector") drm_connector_update_edid_property() actually checks
whether the new EDID we've specified is different from the previous one,
and updates the connector's epoch accordingly if it is. But, because we
always set the EDID to NULL first in nouveau_connector_ddc_detect() and
nouveau_connector_detect_lvds() we end up making DRM think that the EDID
changes every single time we do a connector probe - which isn't needed.

So, let's fix this by not clearing the EDID at the start of the
connector probing process, and instead simply changing or removing it
once near the end of the probing process. This will help prevent us from
sending unneeded hotplug events to userspace when nothing has actually
changed.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200826182456.322681-19-lyude@redhat.com
Stable-dep-of: 55b94bb8c424 ("drm/nouveau: add nv_encoder pointer check for NULL")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-06-21 15:44:12 +02:00
arch Remove DECnet support from kernel 2023-06-21 15:44:10 +02:00
block block/blk-iocost (gcc13): keep large values in a new enum 2023-06-14 10:59:54 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:11:22 +02:00
crypto KEYS: asymmetric: Copy sig and digest in public_key_verify_signature() 2023-06-21 15:44:08 +02:00
Documentation Remove DECnet support from kernel 2023-06-21 15:44:10 +02:00
drivers drm/nouveau/kms: Don't change EDID when it hasn't actually changed 2023-06-21 15:44:12 +02:00
fs nilfs2: fix possible out-of-bounds segment allocation in resize ioctl 2023-06-21 15:44:10 +02:00
include Remove DECnet support from kernel 2023-06-21 15:44:10 +02:00
init init/Kconfig: fix CC_HAS_ASM_GOTO_TIED_OUTPUT test with dash 2022-12-08 11:22:59 +01:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:23:06 +01:00
kernel kexec: support purgatories with .text.hot sections 2023-06-21 15:44:10 +02:00
lib test_firmware: fix a memory leak with reqs buffer 2023-06-21 15:44:08 +02:00
LICENSES
mm treewide: Remove uninitialized_var() usage 2023-06-09 10:29:01 +02:00
net sctp: fix an error code in sctp_sf_eat_auth() 2023-06-21 15:44:11 +02:00
samples samples/bpf: Fix fout leak in hbm's run_bpf_prog 2023-05-30 12:44:03 +01:00
scripts recordmcount: Fix memory leaks in the uwrite function 2023-05-30 12:44:04 +01:00
security selinux: don't use make's grouped targets feature yet 2023-06-09 10:29:02 +02:00
sound ALSA: hda/realtek: Add a quirk for Compaq N14JP6 2023-06-21 15:44:10 +02:00
tools selftests: fib_tests: mute cleanup error message 2023-05-30 12:44:10 +01:00
usr
virt KVM: Destroy target device if coalesced MMIO unregistration fails 2023-03-11 16:44:01 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Remove DECnet support from kernel 2023-06-21 15:44:10 +02:00
Makefile Linux 5.4.247 2023-06-14 11:00:00 +02:00
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.

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.