drm/i915: remove questionable fence optimization during copy

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First of all as discussed multiple times now kernel copies *must* always
wait for all fences in a BO before actually doing the copy. This is
mandatory.

Additional to that drop the handling when there can't be a shared slot
allocated on the source BO and just properly return an error code.
Otherwise this code path would only be tested under out of memory
conditions.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211221200050.436316-3-thomas.hellstrom@linux.intel.com
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

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Christian König 2021-12-21 21:00:48 +01:00 • committed by Thomas Hellström

parent 1193081710

commit 33654ef470

1 changed files with 14 additions and 29 deletions

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drivers/gpu/drm/i915/gem/i915_gem_ttm_move.c

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