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40a9f77a28
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Ville Syrjälä 40a9f77a28 Revert "drm/i915/dp: change aux_ctl reg read to polling read" 
This reverts commit 5a9b0c7418.

The switch from AUX interrupts to pollign was very hand-wavy.
Yes, there have been some situations in CI on a few platforms
where the AUX hardware seemingly forgets to signal the timeout,
but those have been happening after we switched to polling as
well. So I don't think we have any conclusive evidence that
polling actually helps here.

Someone really should root cause the actual problem, and see
if there is a proper workaround we could implemnt (eg. disabling
clock gating/etc.). In the meantime just go back to using the
interrupt for AUX completion.

If the hardware fails to signal the timeout we will just hit
the wait_event_timeout() software timeout instead. I suppose
we could try to tune the software timeout to more closely
match the expected hardware timeout. Might need to use
wait_event_hrtimeout() or something to avoid jiffies
granularity issues...

The AUX polling is also a hinderance towards using poll_timeout_us()
because we have a very long timeout, but would need a fairly short
polling interval to keep AUX transfer reasonably fast. Someone would
need to come up with good numbers in a somewhat scientific way.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20251119185310.10428-3-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
2025-11-28 00:48:53 +02:00
arch arm64: dts: imx95: Describe Mali G310 GPU 2025-11-03 14:25:22 +00:00
block block-6.18-20251016 2025-10-17 08:31:26 -07:00
certs
crypto This push contains the following changes: 2025-10-10 08:56:16 -07:00
Documentation dt-bindings: gpu: img,powervr-rogue: Document GE7800 GPU in Renesas R-Car M3-N 2025-11-05 10:54:39 +00:00
drivers Revert "drm/i915/dp: change aux_ctl reg read to polling read" 2025-11-28 00:48:53 +02:00
fs Description for this pull request: 2025-10-18 07:23:59 -10:00
include drm/i915: add .fence_priority_display to parent interface 2025-11-19 19:33:43 +02:00
init
io_uring io_uring/rw: check for NULL io_br_sel when putting a buffer 2025-10-15 13:38:53 -06:00
ipc
kernel drm-misc-next for v6.19: 2025-10-24 13:25:20 +02:00
lib
LICENSES
mm slab: reset slab->obj_ext when freeing and it is OBJEXTS_ALLOC_FAIL 2025-10-16 15:16:45 +02:00
net bpf-fixes 2025-10-18 08:00:43 -10:00
rust rust: bitmap: fix formatting 2025-10-17 13:02:22 +02:00
samples
scripts Kbuild fixes for 6.18 #1 2025-10-11 15:47:12 -07:00
security
sound ALSA: hda/realtek: Fix mute led for HP Omen 17-cb0xxx 2025-10-17 16:37:21 +02:00
tools hid-for-linus-2025101701 2025-10-18 08:18:18 -10:00
usr
virt KVM x86 fixes for 6.18: 2025-10-18 10:25:43 +02:00
.clang-format Merge tag 'drm-misc-next-2025-10-02' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next 2025-10-21 10:16:34 +02:00
.clippy.toml
.cocciconfig
.editorconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap Merge drm/drm-next into drm-misc-next 2025-10-24 14:45:08 +02:00
.pylintrc
.rustfmt.toml
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS drm/panel: Add Samsung S6E3FC2X01 DDIC with AMS641RW panel 2025-10-29 22:01:09 +01:00
Makefile Linux 6.18-rc2 2025-10-19 15:19:16 -10:00
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 reStructuredText 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.