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Imre Deak aea007741b drm/dp_mst: Fix GUID DPCD write to non-root MST branch devices
The return value on success of drm_dp_send_dpcd_write() called for
non-root MST branch devices from drm_dp_check_mstb_guid() is the number
of bytes transferred. Atm this return value (in case of a complete read)
will be regarded incorrectly as an error by the caller of
drm_dp_check_mstb_guid(). Fix this by converting the return value for a
complete read to the expected success code (0) and for a partial read to
a failure code (-EPROTO).

Fixes: 2554da0de3 ("drm/display: dp-mst-topology: use new DCPD access helpers")
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Cc: Lyude Paul <lyude@redhat.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://lore.kernel.org/r/20250401103846.686408-1-imre.deak@intel.com
2025-04-03 17:03:01 +03:00
arch Linux 6.14-rc4 2025-02-25 17:36:09 +10:00
block block-6.14-20250221 2025-02-21 09:36:28 -08:00
certs
crypto
Documentation dt-bindings: display: panel: samsung,atna40yk20: document ATNA40YK20 2025-03-27 08:48:58 -07:00
drivers drm/dp_mst: Fix GUID DPCD write to non-root MST branch devices 2025-04-03 17:03:01 +03:00
fs
include drm/mode_config: Make drm_mode_config.(max|min)_(width|height) unsigned 2025-04-02 17:20:01 -04:00
init
io_uring
ipc
kernel Two RSEQ fixes: 2025-02-22 09:30:04 -08:00
lib
LICENSES
mm
net
rust
samples
scripts
security
sound Linux 6.14-rc4 2025-02-25 17:36:09 +10:00
tools tracing fixes for v6.14: 2025-02-22 09:03:54 -08:00
usr
virt
.clang-format drm/vkms: Allow to attach connectors and encoders 2025-03-07 10:58:28 +01:00
.clippy.toml
.cocciconfig
.editorconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap Merge drm/drm-next into drm-misc-next 2025-02-25 11:43:10 +01:00
.rustfmt.toml
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: Add Dmitry Osipenko as drm/virtio co-maintainer 2025-04-01 22:10:00 +03:00
Makefile Linux 6.14-rc4 2025-02-23 12:32:57 -08:00
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 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.