drm/lima: set gp bus_stop bit before hard reset

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This is required for reliable hard resets. Otherwise, doing a hard reset
while a task is still running (such as a task which is being stopped by
the drm_sched timeout handler) may result in random mmu write timeouts
or lockups which cause the entire gpu to hang.

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240124025947.2110659-5-nunes.erico@gmail.com

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Erico Nunes 2024-01-24 03:59:43 +01:00 • committed by Qiang Yu

parent a9da58c86e

commit 27aa58ec85

1 changed files with 12 additions and 0 deletions

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drivers/gpu/drm/lima/lima_gp.c

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