drm/amdgpu: Fix cond_exec handling in amdgpu_ib_schedule()

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commit b1defcdc44 upstream.

The EXEC_COUNT field must be > 0.  In the gfx shadow
handling we always emit a cond_exec packet after the gfx_shadow
packet, but the EXEC_COUNT never gets patched.  This leads
to a hang when we try and reset queues on gfx11 APUs.

Fixes: c68cbbfd54 ("drm/amdgpu: cleanup conditional execution")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4789
Reviewed-by: Jesse Zhang <Jesse.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit ba205ac3d6)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Alex Deucher 2026-01-26 23:44:45 -05:00 • committed by Greg Kroah-Hartman

parent ac251d17d8

commit 078377b07f

1 changed files with 3 additions and 2 deletions

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drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c

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