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| author | Timur Kristóf <timur.kristof@gmail.com> | 2026-08-21 23:50:58 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-08-25 18:20:00 -0400 |
| commit | 52536ce677a3470c0e5323b940791efb33975450 (patch) | |
| tree | 9156cd8b055c97f18a41aec030d79c6630c7320a /scripts/const_structs.checkpatch | |
| parent | b30900566642ceb2c9e12b56c2afec28d0fd91a0 (diff) | |
| download | linux-52536ce677a3470c0e5323b940791efb33975450.tar.gz linux-52536ce677a3470c0e5323b940791efb33975450.zip | |
drm/amd/display: Fix HPD consideration for VGA/LVDS connectors on DCE
After a refactor that landed in Linux 7.0,
DC now crashes when it is initialized on GPUs
that have a VGA or LVDS connector. This is because
these connectors have no HPD so the hpd_gpio is NULL
and therefore DC takes the code path meant for
DCN 4.2+ which sets irq_source_hpd = 255 that
causes the subsequent code to try to register
the HPD interrupt, which fails, and causes
a crash.
This commit should be backported to Linux 7.0 and newer.
Cc: stable@vger.kernel.org
Cc: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Cc: Roman Li <roman.li@amd.com>
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5490
Fixes: def3488eb0fd ("drm/amd/display: refactor HPD to increase flexibility")
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20260821215059.312868-1-timur.kristof@gmail.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'scripts/const_structs.checkpatch')
0 files changed, 0 insertions, 0 deletions